Fayalite-Tephroite Series

Fayalite

Coso Hot Springs deposit, Coso Hot Springs, Inyo County, California, USA

Fayalite

Nickenicher Sattel, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany

Fayalite

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany

Fayalite

Coso Hot Springs deposit, Coso Hot Springs, Inyo County, California, USA

Fayalite

Nickenicher Sattel, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany

Fayalite

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany

Fayalite

Coso Hot Springs deposit, Coso Hot Springs, Inyo County, California, USA

Fayalite

Nickenicher Sattel, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany

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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure

ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0000332	Fayalite	Smyth J R, Hazen R M (1973) The crystal structures of forsterite and hortonolite at several temperatures up to 900 C American Mineralogist 58 588-593		1973	Franklin, New Jersey, USA	0	298
0019693	Tephroite	Yamazaki S, Toraya H (1999) Rietveld refinement of site-occupancy parameters of Mg2-xMnxSiO4 using a new weight function in least-squares fitting Journal of Applied Crystallography 32 51-59		1999	synthetic	0	293
0019692	Tephroite	Yamazaki S, Toraya H (1999) Rietveld refinement of site-occupancy parameters of Mg2-xMnxSiO4 using a new weight function in least-squares fitting Journal of Applied Crystallography 32 51-59		1999	synthetic	0	293
0019691	Tephroite	Yamazaki S, Toraya H (1999) Rietveld refinement of site-occupancy parameters of Mg2-xMnxSiO4 using a new weight function in least-squares fitting Journal of Applied Crystallography 32 51-59		1999	synthetic	0	293
0019690	Tephroite	Yamazaki S, Toraya H (1999) Rietveld refinement of site-occupancy parameters of Mg2-xMnxSiO4 using a new weight function in least-squares fitting Journal of Applied Crystallography 32 51-59		1999	synthetic	0	293
0019689	Tephroite	Yamazaki S, Toraya H (1999) Rietveld refinement of site-occupancy parameters of Mg2-xMnxSiO4 using a new weight function in least-squares fitting Journal of Applied Crystallography 32 51-59		1999	synthetic	0	293
0019687	Tephroite	Yamazaki S, Toraya H (1999) Rietveld refinement of site-occupancy parameters of Mg2-xMnxSiO4 using a new weight function in least-squares fitting Journal of Applied Crystallography 32 51-59		1999	synthetic	0	293
0019697	Tephroite	Redfern S A T, Knight K S, Henderson C M B, Wood B J (1998) Fe-Mn cation ordering in fayalite-tephroite (FexMn1-x)2SiO4 olivines: A neutron diffraction study Mineralogical Magazine 62 607-615		1998	synthetic	0	293
0019696	Tephroite	Redfern S A T, Knight K S, Henderson C M B, Wood B J (1998) Fe-Mn cation ordering in fayalite-tephroite (FexMn1-x)2SiO4 olivines: A neutron diffraction study Mineralogical Magazine 62 607-615		1998	synthetic	0	293
0019699	Fayalite	Redfern S A T, Knight K S, Henderson C M B, Wood B J (1998) Fe-Mn cation ordering in fayalite-tephroite (FexMn1-x)2SiO4 olivines: A neutron diffraction study Mineralogical Magazine 62 607-615		1998	synthetic	0	293
0019698	Fayalite	Redfern S A T, Knight K S, Henderson C M B, Wood B J (1998) Fe-Mn cation ordering in fayalite-tephroite (FexMn1-x)2SiO4 olivines: A neutron diffraction study Mineralogical Magazine 62 607-615		1998	synthetic	0	293
0019695	Tephroite	Fujino K, Sasaki S, Takeuchi Y, Sadanaga R (1981) X-ray determination of electron distributions in forsterite, fayalite and tephroite Acta Crystallographica B37 513-518		1981	synthetic	0	293
0009731	Fayalite	Fujino K, Sasaki S, Takeuchi Y, Sadanaga R (1981) X-ray determination of electron distributions in forsterite, fayalite and tephroite Acta Crystallographica B37 513-518		1981	synthetic	0	293
0000802	Tephroite	Francis C A, Ribbe P H (1980) The forsterite-tephroite series: I. Crystal structure refinements American Mineralogist 65 1263-1269		1980	Madagascar	0	293
0000570	Fayalite	Hazen R M (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine American Mineralogist 62 286-295		1977	Franklin, New Jersey, USA	0	293
0000569	Fayalite	Hazen R M (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine American Mineralogist 62 286-295		1977	synthetic	0	293
0000568	Fayalite	Hazen R M (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine American Mineralogist 62 286-295		1977	synthetic	0	293
0000567	Fayalite	Hazen R M (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine American Mineralogist 62 286-295		1977	synthetic	0	293
0000566	Fayalite	Hazen R M (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine American Mineralogist 62 286-295		1977	synthetic	0	293
0000565	Fayalite	Hazen R M (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine American Mineralogist 62 286-295		1977	synthetic	0	77
0000571	Fayalite	Hazen R M (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine American Mineralogist 62 286-295		1977	Franklin, New Jersey, USA	0	573
0000333	Fayalite	Smyth J R, Hazen R M (1973) The crystal structures of forsterite and hortonolite at several temperatures up to 900 C American Mineralogist 58 588-593		1973	Franklin, New Jersey, USA	0	573
0000572	Fayalite	Hazen R M (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine American Mineralogist 62 286-295		1977	Franklin, New Jersey, USA	0	873
0000334	Fayalite	Smyth J R, Hazen R M (1973) The crystal structures of forsterite and hortonolite at several temperatures up to 900 C American Mineralogist 58 588-593		1973	Franklin, New Jersey, USA	0	873
0000573	Fayalite	Hazen R M (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine American Mineralogist 62 286-295		1977	Franklin, New Jersey, USA	0	1173
0000335	Fayalite	Smyth J R, Hazen R M (1973) The crystal structures of forsterite and hortonolite at several temperatures up to 900 C American Mineralogist 58 588-593		1973	Franklin, New Jersey, USA	0	1173
0014999	Fayalite	Kudoh Y, Takeda H (1986) Single crystal X-ray diffraction study on the bond compressibility of fayalite, Fe2SiO4 and rutile, TiO2 under high pressure Physica B 140 333-336		1986		0.0001	293
0000480	Fayalite	Smyth J R (1975) High temperature crystal chemistry of fayalite olivine American Mineralogist 60 1092-1097		1975		0	293
0000174	Fayalite	Birle J D, Gibbs G V, Moore P B, Smith J V (1968) Crystal structures of natural olivines American Mineralogist 53 807-824		1968		0	293
0000173	Fayalite	Birle J D, Gibbs G V, Moore P B, Smith J V (1968) Crystal structures of natural olivines American Mineralogist 53 807-824		1968		0	293
0000481	Fayalite	Smyth J R (1975) High temperature crystal chemistry of fayalite olivine American Mineralogist 60 1092-1097		1975		0	573
0000482	Fayalite	Smyth J R (1975) High temperature crystal chemistry of fayalite olivine American Mineralogist 60 1092-1097		1975		0	873
0000483	Fayalite	Smyth J R (1975) High temperature crystal chemistry of fayalite olivine American Mineralogist 60 1092-1097		1975		0	1173
0015000	Fayalite	Kudoh Y, Takeda H (1986) Single crystal X-ray diffraction study on the bond compressibility of fayalite, Fe2SiO4 and rutile, TiO2 under high pressure Physica B 140 333-336		1986		4.9	293
0015001	Fayalite	Kudoh Y, Takeda H (1986) Single crystal X-ray diffraction study on the bond compressibility of fayalite, Fe2SiO4 and rutile, TiO2 under high pressure Physica B 140 333-336		1986		6.7	293
0015002	Fayalite	Kudoh Y, Takeda H (1986) Single crystal X-ray diffraction study on the bond compressibility of fayalite, Fe2SiO4 and rutile, TiO2 under high pressure Physica B 140 333-336		1986		9.3	293
0015003	Fayalite	Kudoh Y, Takeda H (1986) Single crystal X-ray diffraction study on the bond compressibility of fayalite, Fe2SiO4 and rutile, TiO2 under high pressure Physica B 140 333-336		1986		11.7	293
0015004	Fayalite	Kudoh Y, Takeda H (1986) Single crystal X-ray diffraction study on the bond compressibility of fayalite, Fe2SiO4 and rutile, TiO2 under high pressure Physica B 140 333-336		1986		14	293

CIF Raw Data - click here to closedata_global _chemical_name_mineral 'Fayalite' loop_ _publ_author_name 'Smyth J R' 'Hazen R M' _journal_name_full 'American Mineralogist' _journal_volume 58 _journal_year 1973 _journal_page_first 588 _journal_page_last 593 _publ_section_title ; The crystal structures of forsterite and hortonolite at several temperatures up to 900 C Note: variety hortonolite T = 25 C ; _database_code_amcsd 0000332 _chemical_compound_source 'Franklin, New Jersey, USA' _chemical_formula_sum '(Fe1.1 Mg.75 Mn.15) Si O4' _cell_length_a 4.798 _cell_length_b 10.387 _cell_length_c 6.055 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 301.762 _exptl_crystal_density_diffrn 3.962 _symmetry_space_group_name_H-M 'P b n m' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,y,1/2-z' '-x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-z' '1/2-x,1/2+y,z' '1/2+x,1/2-y,-z' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv Fe1 0.00000 0.00000 0.00000 0.56200 0.00557 Mg1 0.00000 0.00000 0.00000 0.36100 0.00557 Mn1 0.00000 0.00000 0.00000 0.07700 0.00557 Fe2 0.98670 0.27920 0.25000 0.53800 0.00418 Mg2 0.98670 0.27920 0.25000 0.38900 0.00418 Mn2 0.98670 0.27920 0.25000 0.07300 0.00418 Si 0.42870 0.09570 0.25000 1.00000 0.00418 O1 0.76610 0.09180 0.25000 1.00000 0.00621 O2 0.21270 0.45140 0.25000 1.00000 0.00633 O3 0.28440 0.16330 0.03570 1.00000 0.00697

Varieties of Fayalite-Tephroite SeriesHide

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Fayalite-Tephroite Series in petrologyHide

Internet Links for Fayalite-Tephroite SeriesHide

References for Fayalite-Tephroite SeriesHide

Localities for Fayalite-Tephroite SeriesHide

Showing 1,043 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Afghanistan
Panjshir Khenj District ⓘ Panjsher Valley slag deposits	[Fayalite] Merkel et al. (2013)
Africa
Sahara Desert ⓘ Sahara 99555 meteorite	[Fayalite] Floss et al. (2003)
Algeria
Djanet Province Djanet District ⓘ Gour Oumelalen	[Fayalite] L. Latouche : "L'orthoferrosilite et les roches associées de la région des Gour Oumeladen (N.E. Ahaggar, Algérie)
In Salah Province In Salah District Foggaret Ezzaouia ⓘ Acfer 214 meteorite	[Fayalite] Meteoritical Bulletin et al. (1992)
Lakhbi ⓘ Northwest Africa 2046 Martian meteorite	[Fayalite] - (2004, July)
Tamanrasset Province (Tamanghasset Province) ⓘ Atakor Volcanic Field	[Fayalite] apports des donnees radiometriques (K/Ar) +6 other references
Tamanrasset District ⓘ Adriane volcano	[Fayalite] M. Girod
ⓘ Akar-Akar volcano	[Fayalite] M. Girod
ⓘ Tidjenouine	[Fayalite] Bendaoud et al. (2003)
Tindouf Province Tindouf District ⓘ Northwest Africa 2268 meteorite (NWA 2268)	[Fayalite] Seddiki et al. (2013)
Angola
Benguela Province Balombo ⓘ Balombo occurrence	[Fayalite] Andrade (note preliminaire) +2 other references
ⓘ Chanja occurrence	[Fayalite] Andrade (note preliminaire) +2 other references
Cuanza Sul Province ⓘ Chamaco Occurrence	[Fayalite] Andrade (note preliminaire) +1 other reference
Huambo Province Jolomba ⓘ Jolomba meteorite	[Fayalite] Sighinolfi et al. (1990)
Antarctica	[Fayalite]
East Antarctica Buckley Island quadrangle Lewis Cliff ⓘ Lewis Cliff 86018 meteorite	[Fayalite] Hartmetz et al. (1990)
Miller Range ⓘ Miller Range 03346 Martian meteorite	[Fayalite] Anand et al. (2005) +2 other references
ⓘ Miller Range 090030 Martian meteorite	[Fayalite] Corrigan et al. (2011)
ⓘ Miller Range 090032 meteorite	[Fayalite] Corrigan et al. (2011)
ⓘ Miller Range 090136 meteorite	[Fayalite] Corrigan et al. (2011)
Pecora Escarpment LaPaz Ice Field ⓘ LaPaz Icefield 02205 Lunar meteorite	[Fayalite] aaa.wustl.edu (2005)
Queen Maud Land Mühlig-Hofmann Mountains ⓘ Stålstuten	[Fayalite] Bucher et al. (2005)
Queen Fabiola Mountains ⓘ Yamato 000593 Martian meteorite	[Fayalite] curator.jsc.nasa.gov (2013)
ⓘ Yamato 81020 meteorite	[Fayalite] Krot et al. (2013)
ⓘ Sistefjell	[Fayalite] Harris et al. (2002)
Sør Rondane Mountains ⓘ Asuka 881371 meteorite	[Fayalite] Mikouchi et al. (1996)
ⓘ Asuka 881757 Lunar meteorite	[Fayalite] Ohtani et al. (2011)
ⓘ Widerøefjellet Mountain	[Fayalite] Sönmez et al. (2025)
Victoria Land Allan Hills ⓘ Allan Hills A77105 meteorite	[Fayalite] Fujimaki Hirokazu (1981)
ⓘ Greene Complex	[Fayalite] Proceedings of the VII International ... +1 other reference
ⓘ Malta Plateau	[Fayalite] Müller et al. (1991)
ⓘ Mount Overlord	[Fayalite] Gair (1967) +1 other reference
ⓘ Mount Rittmann	[Fayalite] Armienti et al. (1991)
ⓘ Mt Melbourne	[Fayalite] Wörner G and Viereck L (Victoria Land, Antarctica) +1 other reference
Queen Alexandra Range ⓘ Queen Alexandra Range 94201 Martian meteorite	[Fayalite] Aramovich et al. (2001)
Wilkes Land Clark Peninsula ⓘ Manganese lens	[Tephroite] Plimer et al. (1983)
ⓘ Wilkes Station	[Tephroite] Mason (1959)
West Antarctica Marie Byrd Land Executive Committee Range ⓘ Mount Sidley	[Fayalite] Woolley (2019)
Flood Range ⓘ Mount Berlin	[Fayalite] LeMasurier (1990)
ⓘ Mount Moulton	[Fayalite] Adie (Ed.)
Arabian Plate
Semail Ophiolite ⓘ Khawr Fakkan Massif (Khor Fakkan)	[Tephroite] Gnos et al. (1995)
Argentina
Buenos Aires Province Coronel Suaréz D'Orbigny ⓘ D'Orbigny meteorite	[Fayalite] Hwang et al. (2016)
Australia
New South Wales Auckland Co. Egan Peaks Nature Reserve ⓘ Jingera Complex	[Fayalite] Eggleton +3 other references
Bland Co. ⓘ Narraburra Granite	[Fayalite] Wormald et al. (1988)
Dampier Co. Dromedary Complex ⓘ Little Dromedary Intrusion	[Fayalite] Brown (1930) +1 other reference
Darling Co. ⓘ Manganese Mountain	[Tephroite] Brown et al. (1992)
Forbes Co. Grenfell ⓘ Hoskins mine	[Tephroite] Huebner +6 other references
Gordon Co. Toongi ⓘ Dubbo Zirconia Project	[Fayalite] Morris et al. (2014)
Inglis Co. Bendemeer ⓘ Bendemeer Manganese Mine 2	[Tephroite] Brown et al. (1992)
ⓘ Danglemah 1 (Black and White Mine)	[Tephroite] Brown et al. (1992)
ⓘ Turnbull and Gordons Mine	[Tephroite] Brown et al. (1992)
Danglemah ⓘ Black and White Mine (Danglemah No 1 Mine; O'Neill's Danglemah deposit)	[Tephroite] Hall (1959)
ⓘ Danglemah Mine (Dangelmare Mine)	[Tephroite] Howarth (1973)
ⓘ Woods Mine (Wood's Rhodonite Mine)	[Tephroite] Field observation M Goodwin 1998. +2 other references
Rous Co. ⓘ Mount Warning	[Fayalite] Johnson (1989)
Yancowinna Co. Broken Hill district ⓘ Broken Hill	[Fayalite, Tephroite] Worner et al. (1982)
ⓘ North Mine	[Tephroite] Birch (1999)
ⓘ Junction North Mine	[Tephroite] Museum Victoria collection
Queensland Central Highlands Region Capella ⓘ Peak Range Volcanic Province	[Fayalite] Wellman (1978) +3 other references
Cloncurry Shire Selwyn District ⓘ Pegmont Pb-Zn deposit (Pegmont Mine)	[var: Knebelite, Fayalite] Vaughan (1986) +2 other references
Hinchinbrook Shire Ingham District Hinchinbrook Island ⓘ Mount Bowen	[Fayalite]
McKinlay Shire McKinlay ⓘ Cannington Mine	[Fayalite] Walters et al. (1998) +1 other reference
Scenic Rim Region ⓘ Mount Gillies	[Fayalite, Fayalite var: Ferrohortonolite] ROSS et al. (1987)
Sunshine Coast Region ⓘ Glasshouse Mountains Province	[Fayalite] Stevens +3 other references
Tablelands Region Mount Garnet ⓘ Mount Garnet Mine	[Fayalite] Wang et al. (2024)
Tasmania Dorset municipality Tomahawk ⓘ Tomahawk river phonolite dyke	[Fayalite] Everard et al. (2004)
Kingborough municipality Snug ⓘ Red Hill	[Fayalite] McDougall (1961)
West Coast municipality ⓘ Trial Harbour district	[Fayalite] Bottrill et al. (2008)
Zeehan mining district Zeehan mineral field Tasmanian Smelting Company site ⓘ South Slag dump	[Fayalite, Tephroite] Parbhakar-Fox et al. (2019)
Victoria City of Ballarat ⓘ Alfredton	[Fayalite] Sorrell (n.d.)
City of Greater Geelong Anakie ⓘ Mount Anakie	[Fayalite] Museum Victoria Mineralogy Collection
ⓘ Eastern Hill	[Fayalite] Museum Victoria Mineralogy Collection
Macedon Ranges Shire ⓘ Woodend Province	[Fayalite] Edwards (1938) +6 other references
Western Australia Wongan-Ballidu Shire Wongan Hills ⓘ Ninan prospect	[Fayalite] Ferguson (1999)
Austria
Burgenland Oberpullendorf District Markt Sankt Martin Pauliberg ⓘ Basalt quarry	[Fayalite] Kolitsch et al. (2019)
Carinthia Sankt Veit an der Glan District Friesach Sankt Salvator Moschitzberg ⓘ Pyrophanite locality	[Tephroite] Taucher (1994) +1 other reference
Guttaring Waitschach ⓘ Slag localities	[Fayalite] Kolitsch et al. (2013)
Hüttenberg Lölling ⓘ Hofmühle	[Tephroite] - (n.d.)
Sankt Martin am Silberberg ⓘ Slag localities	[Fayalite] Kolitsch (2016)
Salzburg St. Johann im Pongau District Bad Hofgastein ⓘ Schloss Alp ?	[Tephroite] Strasser (1989)
Mühlbach am Hochkönig Troiboden ⓘ Wilder See slag locality	[Fayalite] Viertler (2009)
ⓘ Windrandegg slag locality	[Fayalite] Viertler (2009)
Tamsweg District Tweng ⓘ Fuchs Alp - Fuchs lake area	[Tephroite] Kolitsch et al. (2015) +1 other reference
Zell am See District Kaprun ⓘ Krapfkühkarl (Krapfkühkar)	[Tephroite] Kolitsch et al. (2019)
ⓘ Lechnerberg slag locality	[Fayalite] Kolitsch et al. (2009) +1 other reference
Mooserboden reservoir ⓘ Drossen dam	[Tephroite] Strasser (1989)
ⓘ Upper level pressure duct	[Tephroite] Strasser (1989)
ⓘ Schmieding glacier	[Tephroite] Kolitsch (2023) +2 other references
Rauris Alteck - Hoher Sonnblick area Kolm-Saigurn ⓘ Slag localities	[Fayalite] Strasser (1989)
ⓘ Astenschmiede slag locality	[Fayalite] Niedermayr et al. (2009)
Styria Bruck-Mürzzuschlag District Sankt Barbara im Mürztal Veitsch Kleinveitsch Kaiblinggraben ⓘ Friedlkogel (Friedelkogel; Heinzlkogel)	[Tephroite] Francis et al. (2004)
ⓘ Kaskogel (Kaskögerl)	[Tephroite] Postl W. et al. (1998) +2 other references
Liezen District Öblarn Walchen ⓘ Slag dumps	[Fayalite] Schebesta (1992)
Südoststeiermark District Bad Gleichenberg Klausen ⓘ Schlarbaum quarry	[Fayalite] Aufschluss 1972 (SB)
Wilhelmsdorf ⓘ Stradner Kogel	[Fayalite] Postl et al. (2011)
Klöch ⓘ Basalt quarry	[Fayalite] "Aus der Tiefe der Vulkane" (2011)
Tyrol Innsbruck-Land District Navis ⓘ Navis stream (Navis creek)	[Tephroite] Kolitsch et al. (2019)
Staffelsee ⓘ Innsbruckite occurrence	[Tephroite] Krüger et al. (2014)
ⓘ Metamorphosed manganese ore lens	[Tephroite] Kolitsch et al. (2019)
Trins ⓘ Kirchdachspitze	[Tephroite] Kolitsch et al. (2021)
Lienz District Kals am Großglockner ⓘ Jörgn Alp	[Tephroite] Meixner (1968)
Kals valley ⓘ Ködnitz valley	[Tephroite] Abrecht (1990)
Prägraten am Großvenediger Timmelbach valley ⓘ Wunwand (Wunspitze)	[Tephroite] Kolitsch et al. (2017)
Upper Austria Steyr-Land District Garsten ⓘ Slag locality	[Fayalite] Neschen (n.d.)
Steyr Slag localities ⓘ Farm Meier	[Fayalite] Neschen (n.d.)
ⓘ Porscheberg	[Fayalite] Neschen (n.d.)
Vorarlberg Bludenz District Silbertal ⓘ Schmelzhof slag locality	[Fayalite] Bechter (2009)
ⓘ Untere Dürrwaldalpe slag locality	[Fayalite] Krause et al. (2025)
Brazil
Amapá Pedra Branca do Amapari ⓘ Tucano mine	[Fayalite] Soares et al. (2025)
Serra do Navio ⓘ Serra do Navio mines	[Tephroite] Bello +1 other reference
Bahia Itarantim ⓘ Serra Rancho Queimado	[Fayalite] Conceicao et al. (2009)
Ceará ⓘ Lagoa do Riacho Mn deposit	[Tephroite] Santos et al. (2021) +1 other reference
Minas Gerais ⓘ Conselheiro Lafaiete	[Tephroite] Williams et al. (2008)
ⓘ Morro da Mina mine	[Tephroite] Viana +5 other references
ⓘ Piquiri mine	[Tephroite] Am Min (1955)
Governador Valadares ⓘ Governador Valadares meteorite	[Fayalite] Berkley et al. (1980)
Martinho Campos Ibitira ⓘ Ibitira meteorite	[Fayalite] Steele et al. (1976)
Pará Marabá ⓘ Salobo Mine	[Fayalite] Vale SA
Pernambuco Vicência Borracha ⓘ Vicência meteorite	[Fayalite] Keil (2015)
Santa Catarina ⓘ Corupá pluton	[Fayalite] Vlach (2012)
São Francisco do Sul Morro do Rócio ⓘ Santa Catharina meteorite	[Fayalite] Buchwald (1975)
São Paulo Ilhabela São Sebastião island ⓘ São Sebastião pluton	[Fayalite] 33rd International Geological Congress (2008)
Cameroon
Adamawa Region Mayo-Banyo Tikar plain ⓘ Pandé massif	[Fayalite] Njonfang et al. (2000)
Littoral Region ⓘ Nlonako Intrusion	[Fayalite] Cantagrel et al. (1978) +1 other reference
Northwest Region ⓘ Oku Massif	[Fayalite] Marzoli et al. (Africa) +8 other references
Southwest Region ⓘ Manengouba stratovolcano	[Fayalite] Jérémine (1941) +6 other references
ⓘ Rumpi Hills	[Fayalite] Jérémine (1943) +2 other references
Canada
British Columbia Slocan Mining Division Riondel ⓘ Bluebell Mine	[var: Knebelite] Grice et al. (1977)
New Brunswick Queens Co. ⓘ Welsford Anorogenic Igneous Complex	[Fayalite] Martin et al. (1988)
Newfoundland and Labrador Labrador ⓘ Flowers River complex	[Fayalite] Ducharme (2020)
ⓘ Nain Complex	[Fayalite] Waard
Newfoundland Baie Verte Peninsula Tilt Cove ⓘ Tilt Cove Slag Locality	[Fayalite] Norman Wilson personal collection
Nunavut Kitikmeot Region ⓘ Arcedeckne Island	[Fayalite] Can. Mineral. (1993) +1 other reference
Ontario Greater Sudbury McKim Township ⓘ Sudbury area	[Fayalite] Schindler et al. (2012)
Nipissing District Calvin Township ⓘ Hayes property (Eau Claire)	[Fayalite] Heinrich (1962)
Sudbury District Unorganized North Sudbury District Nemegos area ⓘ Nemegos carbonatite	[Fayalite] Berger et al. (2009)
Québec Estrie Bromont ⓘ Mont Brome	[Fayalite] WOUSSEN et al. (1972)
La Haute-Yamaska RCM Shefford ⓘ Mont Shefford	[var: Knebelite] Frisch (1972)
Le Granit RCM Val-Racine ⓘ Mont Mégantic	[Fayalite] Currie (1976)
Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH)	[Fayalite] Schilling et al. (2011)
Nord-du-Québec Jamésie Baie-James Certac mine ⓘ Certac kimberlite	[Fayalite] Van Rythoven et al. (2020)
Nunavik ⓘ Misery Lake alkaline complex	[Fayalite] Petrella (2013)
Outaouais Gatineau TE Gatineau Park ⓘ Forsyth Mine ?	[Fayalite] John Weber (1926-2015)
Yukon Whitehorse mining district ⓘ Evelyn Creek Rhodonite Claims	[Tephroite] Färber (n.d.)
Cape Verde
Sotavento Islands Fogo Island ⓘ Mount Fogo	[Fayalite] Silva et al. (2019)
Central African Republic
Nana-Mambéré Lobaye River (Bali River) ⓘ Bali meteorite	[Fayalite] Hoinkes et al. (1975)
Chad
Tibesti Region ⓘ Tibesti Volcanic Province	[Fayalite] Vincent (Sahara du Tchad) +4 other references
Chile
Antofagasta Antofagasta Province La Negra-Coquimbana district ⓘ Coquimbana mine	[Tephroite] Pincheira et al. (1990)
Magallanes Última Esperanza Province ⓘ Cerro Balmaceda	[Fayalite] Woolley (1987)
Valparaíso Ísla de Pascua Province ⓘ Easter Island	[Fayalite] Bailey et al. (1970) +4 other references
China
Anhui Anqing Qianshan City ⓘ Maowu complex	[Fayalite] Zhang et al. (1999)
Fujian Fuzhou Yongtai County ⓘ Yunshan	[Fayalite] Hong et al. (2013)
Gansu Jinchang Jinchuan District ⓘ Jinchuan Ni-Cu-PGE deposit (Baijiajuzi Ni-Cu-PGE deposit)	[Fayalite] Porter (Mike)
Jiuquan Subei Co. ⓘ Diaoshigou Mine	[Tephroite] Fangcheng Wang et al. (2010)
Hebei Qinhuangdao Shanhaiguan District ⓘ Houshihushan	[Fayalite] Yang et al. (2007) +1 other reference
Hubei Huanggang Luotian Co. Hejiawan ⓘ Hejiawan Mn deposit	[var: Knebelite] Jingqu Yao (1992)
ⓘ Xiaojiawan Mn deposit	[var: Knebelite] Jingqu Yao (1992)
Wuhan Huangpi District ⓘ Tuanshangou Mine	[var: Knebelite] Jingqu Yao (1992)
Hunan Chenzhou Suxian District Dongpo ore field ⓘ Manaoshan Mine	[var: Knebelite] Zhaojian Zeng (1997)
Yizhang Co. Dongpo ore field ⓘ Shizhuyuan Mine	[Tephroite] Jingwen Mao et al. (1996)
Inner Mongolia Baotou City Bayan Obo mining district ⓘ Bayan Obo deposit	[Fayalite] Qing-chang (1981)
Jilin Baishan Fusong County ⓘ Changbai (Paektu Mountain)	[Fayalite] Ogura (1969) +5 other references
Liaoning Chaoyang Chaoyang County ⓘ Wafangzi Fe-Mn deposit	[Tephroite] Fan Delian et al. (1992)
Huludao Jianchang County Bajiazi Zn-Pb-Ag deposit ⓘ Binggou section	[var: Knebelite] Zhao et al. (2003)
ⓘ Dongfeng section	[var: Knebelite] Zhao et al. (2003)
ⓘ Hongqi section	[var: Knebelite] Zhao et al. (2003)
ⓘ Lugou section	[var: Knebelite] Zhao et al. (2003)
Sichuan Panzhihua Miyi County ⓘ Baima V-Ti-Fe deposit	[Fayalite] Zhong et al. (2007) +4 other references
Xinjiang Bayin'gholin Autonomous Prefecture Qiemo Co. (Qerqen Co.; Cherchen Co.) ⓘ Pakepake 005 meteorite	[Fayalite] Meteorlogical Bulletin
Czech Republic
Central Bohemian Region Kutná Hora District Kutná Hora Vrchlice river valley ⓘ Slag locality	[Fayalite] Pauliš P. Mineralogické lokality ...
Příbram District Příbram Bohutín ⓘ Bohutín smelter slag locality	ETTLER et al. (2009)
Karlovy Vary Region Cheb District Ovesné Kladruby ⓘ Podhorní hill (Podhora)	[Fayalite] Jirasek et al. (2026)
Moravian-Silesian Region Ostrava-City District Ostrava Heřmanice ⓘ Heřmanice dump	[Fayalite] Matýsek et al. (2022)
Olomouc Region Olomouc District Těšetice ⓘ Tieschitz meteorite	[Fayalite] Brearley et al. (1998)
Pardubice Region Pardubice District ⓘ Chvaletice	[Fayalite, Tephroite] Prachař +6 other references
Prague ⓘ Na Slupi site	[Fayalite] Ettler et al. (2015)
Ústí nad Labem Region Teplice District ⓘ Hostomice	[Fayalite] Žáček V
Vysočina Region Třebíč District Kojetice ⓘ Kojetice metamanganolite occurrence	[Tephroite] Novák et al. (2007)
Žďár nad Sázavou District Kuklík ⓘ Skarn body	[Fayalite] Malec et al. (2013)
ⓘ Líšná	[Fayalite] Malec et al. (2013)
Djibouti
Tadjourah Region ⓘ North Tadjoura Complex	[Fayalite] Richard +3 other references
DR Congo
Lualaba Dilolo ⓘ Kisenge-Kamata deposit (Kisenge mining area)	[Tephroite] Uchôa Filho et al. (2025)
ⓘ Kisenge Manganese Mine	[Tephroite] De Putter et al. (2018)
North Kivu Beni Territory Bashu ⓘ Bingo carbonatite	[Fayalite] USGS Open-File Report 02–156–A +2 other references
Rutshuru Territory Bwito ⓘ Lueshe Mine	[Fayalite] Berger et al. (2009)
South Kivu Kabare Territory ⓘ Biega Complex	[Fayalite] N.. Boutakoff. (1956) +3 other references
ⓘ Bukavu Volcanic Field	[Fayalite] Kanika et al. (1981) +3 other references
Kalehe Territory ⓘ Kambusi Complex	[Fayalite] Rumvegeri et al. (1985)
Egypt
Aswan Governorate ⓘ Bir Um Hibal Complex	[Fayalite] Hashad et al. (1979) +1 other reference
Beheira Governorate Abu Hommos Nakhla ⓘ Nakhla Martian meteorite	[Fayalite] Berkley et al. (1980) +2 other references
Red Sea Governorate ⓘ Nuweibi Complex	[Fayalite] Alekseev et al. (2023)
Um Samiuki deposit ⓘ Western Mine	[Tephroite] Shalaby et al. (2004)
Eritrea
Northern Red Sea Region Alid volcanic center ⓘ Granophyre outcrops	[Fayalite] Journal of Petrology
Estonia
Saare County Kaali ⓘ Kaali (Kaalijärv) meteorite crater group	[Fayalite] Marini et al. (2004)
Ethiopia
Afar Region Awsi Rasu ⓘ Moussa Alli Stratovolcano	[Fayalite] Fino. M.De et al. (Ethiopia and T.F.A.I.) +1 other reference
Fanti Rasu ⓘ Boina Volcanic Region	[Fayalite] Barberi et al. (1972) +3 other references
ⓘ Limmo Granite Intruson	[Fayalite] Black et al. (1972)
Kilbet Rasu ⓘ Ma'Alalta Volcano	[Fayalite] Tazieff et al. (decembre 67-fevrier 68) +4 other references
Oromia Region East Shewa Zone Corbetti Volcanic Complex ⓘ Chabbi Volcano	[Fayalite] Mohr (1966) +2 other references
ⓘ Urji Volcano	[Fayalite] Mohr (1966) +2 other references
ⓘ Fantale stratovolcano	[Fayalite] Gibson +6 other references
ⓘ Koni Volcanic Centre	[Fayalite] Mohr (1962) +1 other reference
Metehara ⓘ Fant'Ale volcano	[Fayalite] Varet (1970)
Finland
Lapland Sodankylä Viiankiaapa mire area ⓘ Sakattilampi (Sakatti deposit)	[Fayalite] Fröhlich et al. (2021)
North Savo Rautalampi ⓘ Kiviniemi	[Fayalite] Ahven (2012) +2 other references
Päijänne Tavastia Orimattila ⓘ Artjärvi	[Fayalite] Lemanski (n.d.)
Satakunta ⓘ Eurajoki	[Fayalite] Haapala et al. (2000)
ⓘ Tarkki	[Fayalite] Lemanski (n.d.)
South Karelia Lappeenranta ⓘ Ihalainen limestone quarry	[Fayalite] Hytönen (1999)
South Ostrobothnia Kauhajoki ⓘ Kauhajärvi	[Fayalite] Kärkkäinen et al. (1999)
Seinäjoki-Lapua ⓘ Vittinki Mn-Fe formation	[Fayalite, Tephroite] Mancini et al. (2000)
France
Auvergne-Rhône-Alpes Haute-Loire Le Puy-en-Velay Espaly-Saint-Marcel ⓘ Mont Denise	[Fayalite]
Landos ⓘ Charbonnier ?	[Fayalite] Lemanski (n.d.)
Puy-de-Dôme Issoire Chastreix ⓘ Roc de Courlande	[Fayalite] Designolle (1996)
Savoie Saint-Jean-de-Maurienne Bessans ⓘ Le Coin	[Tephroite] Chopin (1978)
Bonneval-sur-Arc ⓘ Ouille du Midi	[Tephroite] Chopin (1978) +1 other reference
Brittany Morbihan Lorient Groix Primiture ⓘ Les Saisies	[Tephroite] Chauris (2014)
Corsica Corse-du-Sud Ajaccio Cristinacce ⓘ Evisa-Calasima Complex	[Fayalite] l'exemple de l'association du Vieux Pont d'Ota. Bulletin de la Société Géologique de France (4) +5 other references
ⓘ Évisa	[Fayalite] Erwin Löffler collection
Tolla ⓘ Cauro-Bastelica Complex	[Fayalite] Bonin et al. (1972) +3 other references
French Polynesia Society Islands Leeward Islands ⓘ Huahine Island	[Fayalite] LEGENDRE et al. (2003)
Tuamotu-Gambier (Tuamotu and Gambier Islands) Tuamotu Archipelago (Tuamotus) Mururoa ⓘ "Requin 3" drill hole	[Fayalite] Wagner et al. (1988)
French Southern and Antarctic Lands ⓘ Kerguelen Islands	[Fayalite] Nougier (1972) +21 other references
Occitanie Aveyron Rodez Sévérac-d'Aveyron ⓘ Lapanouse-de-Sévérac slag locality ?	[Fayalite] publication date: November 2018 +1 other reference
Hautes-Pyrénées ⓘ Aure Valley	[Tephroite] De Ascenção Guedes et al. (2002)
Nabias ⓘ Plan de Labasse	[Tephroite] European J. Mineralogy +1 other reference
Bagnères-de-Bigorre Vielle-Aure ⓘ Coustou Mine	[Tephroite] Lacroix (1900) +3 other references
Louron Valley Aderville ⓘ Montagne d'Azet	[Tephroite] Lacroix (1900)
Hérault Lodève ⓘ Cabrières	[Fayalite] Ambert et al. (2014)
Lozère Florac Vialas ⓘ Vialas smelter slag locality	[Fayalite] Lheur et al. (1998)
Provence-Alpes-Côte d'Azur Var Brignoles Les Mayons ⓘ Rascas - Valpayette Mines	[Fayalite] Mari et al. (1979)
Toulon Collobrières ⓘ Vaubarnier mine	[Fayalite] Mari et al. (1979)
Réunion Saint-Leu ⓘ Grande Ravine	[Fayalite] André MELLE collection - Georges ...
Germany
Baden-Württemberg Freiburg Region Emmendingen Sasbach am Kaiserstuhl ⓘ Limberg Quarries	[Fayalite] Betz (2012)
Bavaria Upper Palatinate Neustadt an der Waldnaab District Pleystein ⓘ Unnamed placers	[Fayalite] Dill (2008)
Lower Saxony Goslar District Bad Harzburg Radau valley ⓘ Gabbro Quarry	[Fayalite]
Schmalenberg cliff ⓘ Riekensglück prospect	[Fayalite]
Harz (Landkreis Goslar) ⓘ Spitzenberg Mines	[Fayalite]
Langelsheim Lautenthal ⓘ Lautenthal smelter slag locality	[Fayalite] Luetcke (n.d.)
North Rhine-Westphalia Arnsberg Hochsauerlandkreis Arnsberg Hüsten ⓘ "An der Seilbahn" slag locality	[Fayalite] Pawlowski (1991)
Märkischer Kreis Iserlohn Letmathe Helmke quarry nature reserve ⓘ Genna zinc smelter slag locality	[Fayalite] Schnorrer-Köhler (1986) +1 other reference
Siegen-Wittgenstein Kreuztal Ferndorf ⓘ Ferndorfer Kupferhütte slag locality (Zitzenbach valley slag locality)	[Fayalite] Neschen (n.d.)
Rhineland-Palatinate Ahrweiler Brohltal Burgbrohl ⓘ Herchenberg quarry	[Fayalite] Hentschel (1983)
Spessart Hannebach ⓘ Hannebacher Ley	[Fayalite] Hentschel (1987)
Altenkirchen Daaden-Herdorf Schutzbach ⓘ Grüneau Mine (Grüne Au Mine; Grünau Mine)	[Fayalite, Tephroite] Schnorrer et al. (1997) +1 other reference
Mayen-Koblenz Maifeld Ochtendung ⓘ Wannenköpfe Quarry	[Fayalite] Rondorf et al. (1988)
Mayen ⓘ In der Ahl Quarry	[Fayalite] Hentschel (1983)
Mendig Mendig ⓘ In den Dellen quarries	[Tephroite] Hentschel (1983)
ⓘ Thelenberg	[Tephroite] Hentschel (1983) +1 other reference
Wingertsberg ⓘ Pumice quarries	[Tephroite] Hentschel (1983)
Pellenz Kruft ⓘ Krufter Ofen	[Tephroite] Hentschel (1983)
ⓘ Tönchesberg	[Fayalite] Blaß et al. (2015) +1 other reference
Nickenich ⓘ Nickenicher Sattel	[Fayalite] Hentschel (1983)
ⓘ Nickenicher Weinberg	[Fayalite] Hentschel (1983)
Vordereifel Ettringen ⓘ Caspar quarry	[Fayalite] Hentschel (1983)
Vulkaneifel Daun Strohn ⓘ Wartgesberg	[Fayalite] Hentschel (1983)
Üdersdorf ⓘ Emmelberg	[Fayalite] Hentschel (1983)
Gerolstein Gerolstein Roth ⓘ Rother Kopf	[Fayalite] Blaß et al. (2012)
Walsdorf ⓘ Goßberg	[Fayalite] Hohn et al. (2015)
Kelberg Drees ⓘ Niveligsberg	[Fayalite] Schüller (1990)
Saarland Sankt Wendel Nonnweiler Kastel ⓘ Slag occurrence	[Fayalite] Thomas Kleser Collection
Saxony-Anhalt Harz Oberharz am Brocken Elbingerode Schävenholz ⓘ Kaiser Franz Mine (König Wilhelm Mine)	[Tephroite] Witzke (2013)
Mansfeld-Südharz Mansfeld ⓘ Gottesbelohnung smelter	[Fayalite] Neschen (n.d.) +1 other reference
ⓘ Lichtloch 26	[Fayalite] Gerhard Möhn Collection Analyzed by ...
Saxony Görlitz District Königshain ⓘ Jenichen Quarry (Jehnichen Quarry; Jähnichen Quarry)	[Fayalite] Witzke et al. (2012)
Mittelsachsen Freiberg Halsbach ⓘ Thurmhof smelter slag locality	[Fayalite] Andreas Gerstenberg colelction
Schleswig-Holstein Nordfriesland Joldelund ⓘ Kammberg slag locality	[Fayalite] Wittern (2001)
Thuringia Schmalkalden-Meiningen District Dolmar-Salzbrücke Kühndorf ⓘ Großer Dolmar	[Fayalite] Schüller (1953)
Greece
Attica East Attica Lavreotiki Sounion ⓘ Sounion Cove slag locality	[Fayalite] Collection of RJ Martin inferred from ...
Greenland
Kujalleq ⓘ Igaliku Complex	[Fayalite] Petersen (1995)
ⓘ Motzfeldt Centre	[Fayalite] Jones (1980)
ⓘ North Qôroq Centre	[Fayalite] Coulson (2003)
ⓘ Ilímaussaq complex	[Fayalite, Fayalite var: Ferrohortonolite] Petersen et al. (1993) +1 other reference
Nunarsuit Island ⓘ Nunarssuit complex	[Fayalite] Hodson (1998)
Qaqortoq ⓘ Klokken complex	[Fayalite] Parsons et al. (1981)
Qeqertalik Disko Island ⓘ Kitdlît	[Fayalite] ULFF-MØLLER (1985)
Sermersooq Arsuk Fjord ⓘ Kûngnât complex	[Fayalite] Hodson et al. (1997)
Kangerlussuaq Fjord ⓘ Skaergaard intrusion	[Fayalite] Mineralogical Magazine et al. (4)
ⓘ Kap Edvard Holm Complex	[Fayalite] Woolley (1987)
Kialineq Bay ⓘ Kialineq complex	[Fayalite] www.koeln.netsurf.de (1999)
Hungary
Fejér County Gárdony District Sukoró ⓘ Rigó Hill	[Fayalite] Sándor et al. (2005)
Hajdú-Bihar County Kaba ⓘ Kaba meteorite	[Fayalite] Brearley et al. (1998) +2 other references
Iceland
Southern Region Hornafjörður ⓘ Austurhorn Intrusion	[Fayalite] Blake (1966) +1 other reference
ⓘ Vesterhorn Complex	[Fayalite] Roobol (1974) +1 other reference
Rangárþing eystra ⓘ Thorsmörk extrusive occurrence	[Fayalite] Jørgensen (1980) +1 other reference
Vatnajökull Glacier ⓘ Grímsvötn	[Fayalite] Ágústsdóttir et al. (1994)
Western Region Eyja- og Miklaholtshreppur ⓘ Ljósufjöll volcano	[Fayalite] Martin et al. (2007) +1 other reference
India
Andhra Pradesh Prakasam District ⓘ Errakonda Pluton	[Fayalite] Krishna Reddy et al. (1998)
ⓘ Settupalle pluton	[Fayalite] Madhavan et al. (1981) +11 other references
Vizianagaram District ⓘ Garbham deposit	[var: Knebelite] Bhattacharyya (1985)
ⓘ Garividi deposit	[Tephroite] Sivaprakash (1981)
ⓘ Koduru Mine	[Tephroite] Sivaprakash (1980)
Bihar Gaya District ⓘ Shergotty Martian meteorite	[Fayalite] Treiman (1985)
Gujarat Chhota Udaipur District Kavant Taluka ⓘ Siriwasan-Dughda	[Fayalite] Sukheswala et al. (1975) +2 other references
Karnataka ⓘ Uttara Kannada District	[Fayalite] Nayak et al. (2024)
Madhya Pradesh Jabalpur Division Chhindwara District ⓘ Semarkona meteorite	[Fayalite] E.R.D. Scott et al. (1988)
Odisha Sundargarh District (Sundergarh District) ⓘ Ghoriajhor-Monmunda area	[Tephroite] Mohapatra et al. (2003)
Uttar Pradesh Mau District ⓘ Chainpur meteorite	[Fayalite] Krot (2006)
Mirzapur Division Bhadohi District ⓘ Bishunpur meteorite (Parjabatpur meteorite)	[Fayalite] Lauretta et al. (2001) +2 other references
Indonesia
Bangka-Belitung Province Belitung Island (Biliton Island) East Belitung Regency ⓘ Selumar	[Fayalite] Econ Geol (1977)
North Maluku Province Halmahera Island ⓘ Wailukum Ni Laterites	[Fayalite] Bari et al. (2026)
Iran
Kerman Province Sirjan County Pariz ⓘ Sar Cheshmeh Smelter	[Fayalite] Mohamadi Nasab et al. (2022)
Kurdistan Province Divandarreh County ⓘ Tawakalan deposit	[Tephroite] Moinevaziri (2019)
West Azerbaijan Province Piranshahr County ⓘ Piranshahr intrusion (Piranshahr massif)	[Fayalite] Mazhari et al. (2009)
Ireland
Munster Kerry County Killarney Lough Leane ⓘ Ross Island	[Fayalite] Ixer
Italy
Aosta Valley Champdepraz ⓘ La Servaz Desot slag locality	[Fayalite] Franco Luca Bonino's collection
Fénis Clavalité Valley ⓘ Misérègne slag locality	[Fayalite] Toffolo (2012-13)
Nus Saint-Barthélemy ⓘ Varenche Mine	[Tephroite] Piccoli et al. (2007)
Saint-Marcel Servette-Chuc mining complex ⓘ Praborna Mine	[Tephroite] Cenki-Tok et al. (2006)
ⓘ Servette slag heaps	[Fayalite] Gordon (2004) +1 other reference
Campania Metropolitan City of Naples Ercolano ⓘ Scala lava flow	[Fayalite] Scacchi (1882)
Massa di Somma ⓘ Vallone Molaro	[Fayalite] Imma Punzo find & collection
Pollena Trocchia ⓘ Pollena quarries	[Fayalite] Domenico Preite Collection
ⓘ Procida Island	[Fayalite] Russo (2010)
Torre Annunziata ⓘ Oncino lava flow (Uncino lava flow)	[Fayalite] Scacchi (1882)
Torre del Greco ⓘ Camaldoli della Torre	[Fayalite] Scacchi (1882) +1 other reference
ⓘ Villa Inglese quarries	[Fayalite] Scacchi (1882) +4 other references
Emilia-Romagna Ferrara Province Vigarano Mainarda Vigarano Pieve ⓘ Vigarano meteorite (Cariani; Ferrara; Mainardi; Morandi; Parish; Pieve; Vigarano Mainarda; Vigarano Pieve; Vigarno; Vigarvano; Vigavano [NHM cat.])	[Fayalite] Krot et al. (1995) +1 other reference
Lazio Metropolitan City of Rome Capital Magliano Romano ⓘ Fosso Attici	[Fayalite] Liotti L. and Tealdi E. (1983)
Viterbo Province ⓘ Gradoli	[Fayalite] Fiori S. and Signoretti E. (2001)
Onano ⓘ Montenero Quarry	[Fayalite] Cresta et al. (2002)
Liguria Genoa Ne ⓘ Molinello Mine	[Tephroite] Balestra (2016)
Reppia ⓘ Gambatesa Mine	[Tephroite] Pipino (1984)
La Spezia Province Borghetto di Vara ⓘ Cerchiara Mine	[Tephroite] Palenzona et al. (1988)
Lombardy Sondrio Province Chiesa in Valmalenco Muretto Valley ⓘ Monte del Forno	[Tephroite] Ferrario et al. (1976)
Lanzada ⓘ Scerscen Valley	[Tephroite]
ⓘ Lower Scerscen Glacier	[Tephroite] Bedognè et al. (1993) +1 other reference
Varese Province ⓘ Cuasso al Monte	[Fayalite] Boscardin M. (1972) +1 other reference
Cavagnano ⓘ Laghetto Quarry	[Fayalite] Giovanni Fraccaro +1 other reference
ⓘ Subalpina Quarry (Mantegazza Quarry; Gebel Quarry; Bianchi Quarry)	[Fayalite] - (as a monograph) +2 other references
Cuasso al Piano ⓘ Del Prete Quarry	[Fayalite] Biffi P. et al. (2004)
Valganna ⓘ Gerizzo leucogranite pluton	[Fayalite] F. Bakos
Piedmont Cuneo Province Bellino ⓘ Maniglia Mt. Mine	[Tephroite] Piccoli et al. (2021)
Metropolitan City of Turin Ceres ⓘ Vernetto Superiore (Croce di Chiaves) ?	[Tephroite] Ambrino et al. (2010)
Salbertrand ⓘ Case Berge	[Tephroite] Ambrino (Piero)
Verbano-Cusio-Ossola Province Baveno Feriolo ⓘ Cirla Quarry (Monte Camoscio Quarry; Camoscio Quarry)	[Fayalite] Boriani A. (2003)
Oltrefiume Mount Camoscio ⓘ Locatelli quarry	[Fayalite] Grill (1935)
ⓘ Seula mine	[Fayalite] Grill (1935) +1 other reference
Omegna Brughiere ⓘ Rio Inferno quarry	[Fayalite] Albertini (2000)
Vercelli Province ⓘ Alagna Valsesia	[Tephroite] Piccoli et al. (2007)
Otro Valley ⓘ Feglierec Mine	[Tephroite] Peters et al. (1978) +1 other reference
Sardinia Sassari Province Calangianus ⓘ Furru e Conca Quarries	[Fayalite] Gamboni et al. (1997)
Sant'Antonio di Gallura ⓘ Priatu Quarries	[Fayalite] Gamboni et al. (1998)
South Sardinia Province Villacidro ⓘ Canale Serci Mine (Monti Mannu Mine)	[Fayalite] Naitza et al. (2015, April)
Sicily Metropolitan City of Catania Biancavilla ⓘ Mt Calvario ?	[Fayalite] Di Franco (1942)
Metropolitan City of Messina Eolie Islands (Aeolian Islands) Lipari Vulcano Island ⓘ La Fossa crater	[Fayalite] Campostrini et al. (2011)
Trapani Province ⓘ Pantelleria Island	[Fayalite, Fayalite var: Ferrohortonolite] Washington (1909) +12 other references
ⓘ Cinque Denti caldera wall	[Fayalite] Bagiński et al. (2018)
Trentino-Alto Adige/Südtirol South Tyrol Wipptal (Alta Vall'Isarco) Franzensfeste (Fortezza) ⓘ Le Cave (Grasstein)	[Fayalite] Exel (1987)
Trento Province Castello Tesino ⓘ Cima D'Asta-Campo Regana	[Fayalite] Ferretti et al. (2008)
ⓘ Predazzo	[Fayalite] De Michele (1974)
Tuscany Grosseto Province Massa Marittima Valpiana - Castello della Marsiliana area slag sites ⓘ Arialla slag locality	[Fayalite] Manasse et al. (2002)
ⓘ Cascata slag locality	[Fayalite] Costagliola et al. (2008)
ⓘ Forra slag locality	[Fayalite] Costagliola et al. (2008)
ⓘ Marsiliana slag locality	[Fayalite] Manasse et al. (2002) +1 other reference
Scarlino ⓘ Poggetti Butelli slag locality	[Fayalite] Costagliola et al. (2008)
Livorno Province Campiglia Marittima Madonna di Fucinaia (Madonna della Fucinaia) slag heaps ⓘ Capattoli Valley slag locality	[Fayalite] Manasse et al. (2001)
ⓘ Rocca San Silvestro slag locality	[Fayalite] Mascaro et al. (1995)
Piombino ⓘ Baratti slag locality	[Fayalite] Franzini et al. (1992) +3 other references
Massa-Carrara Province Fivizzano ⓘ Scortico-Ravazzone mine	[Tephroite] Di Sabatino (1967) +1 other reference
Japan
Aichi Prefecture Kitashitara County Shitara ⓘ Taguchi mine	[Tephroite] ... +2 other references
Shinshiro city ⓘ Shidara Volcanic field	[Fayalite] Kuno (1960) +3 other references
Ehime Prefecture Iyo City ⓘ Sanpo mine	[Tephroite] H. Momoi (1964)
Iyo district Tobe-cho ⓘ Furumiya mine	[Tephroite] Nakagawa et al. (2009)
Ouzu City ⓘ Kamisugai mine	[Tephroite] Fukushima et al. (2005) +1 other reference
Saijo City ⓘ Kurase mine	[Tephroite] Tanaka et al. (2010)
Fukui Prefecture Mikatakaminaka District Wakasa-cho ⓘ Fujii mine	[Tephroite] H. Momoi (1964) +2 other references
Fukushima Prefecture Date District Kawamata Iizaka Village (Iisaka) ⓘ Suishoyama pegmatite (Suishouyama; Suisyoyama; Suishyoyama)	[var: Knebelite, Fayalite] Excalibur Mineral Company specimen +1 other reference
Iwaki City ⓘ Gozaisho Mine	[Tephroite] MATSUBARA et al. (1996)
ⓘ Shinsawatari mine	[Tephroite] - (n.d.)
Yama District Nishiaizu-machi ⓘ Kuratani mine	[Tephroite] Fukuoka (1981)
Gifu Prefecture Kamo District Hichisou-cho ⓘ Hazu mine (Hadzu mine)	[Tephroite] Toyofumi Yoshimura et al. (1969)
Nakatsugawa City ⓘ Hirukawa	[Fayalite] SUENO et al. (2002)
ⓘ Tawara (Tahara)	[Fayalite] Yamada (2004)
Gunma Prefecture Kiryu City ⓘ Kurokawa mine	[Tephroite] Minerals in Japan (Field Best Encyclopedia V. 15, 2003)
ⓘ Mogurazawa mine	[Tephroite] Matsubara Satoshi et al. (1980) +1 other reference
ⓘ Shohwa mine (Showa mine)	[Tephroite] FUKUOKA et al. (1977)
Midori City Seta ⓘ Hagidaira mine	[Tephroite] Hayashi (1961) +3 other references
ⓘ Hanawa mine	[Tephroite] Fukuoka (1981)
ⓘ Rito mine (Ritoh mine)	[Tephroite] FUKUOKA et al. (1977) +1 other reference
Hiroshima Prefecture Hiroshima City ⓘ Setagawa	[Fayalite] Petrov (n.d.)
Hokkaidō Prefecture Oshima Subprefecture Futami District Yakumo Kumaishi ⓘ Tatehira mine	[Tephroite] - (n.d.) +2 other references
Hyogo Prefecture Yabu City Yabu-cho ⓘ Yamanaka mine	[Tephroite] Fukuoka (1981)
Ibaraki Prefecture Takanomine mine ⓘ Kawakami adit	[Tephroite] Mayumi Yoshinaga (1963)
Iwate Prefecture Kamaishi City ⓘ Hakozaki mine	[var: Knebelite, Fayalite, Tephroite] - (n.d.)
ⓘ Hongo mine (Hongou mine)	[Tephroite] Fukuoka (1981)
ⓘ Kerobe mine	[Tephroite] Toyofumi Yoshimura et al. (1969)
ⓘ Komatsuhama mine	[Tephroite] - (n.d.)
Karumai ⓘ Kohare mine	[Tephroite] Nambu et al. (1967)
Kuji City Yamagata ⓘ Imoya mine	[Tephroite] - (n.d.)
ⓘ Kitakami mine	[Tephroite] - (n.d.)
ⓘ Oguni mine	[Tephroite] - (n.d.)
ⓘ Shimizugawa mine	[Tephroite] - (n.d.)
ⓘ Takamatsu mine	[Tephroite] - (n.d.)
ⓘ Taki mine	[Tephroite] Fukuoka (1981)
ⓘ Toyoguchi mine (Toyokuchi mine)	[Tephroite] Nambu et al. (1961)
ⓘ Yamagata mine	[Tephroite] - (n.d.)
Kunohe-gun Noda ⓘ Noda-Tamagawa mine	[Tephroite, Tephroite var: Picrotephroite] Katsu Kaneko (1956) +1 other reference
Kuzumaki ⓘ Fujikura mine	[Tephroite] - (n.d.)
Miyako City ⓘ Hanawa mine	[Tephroite] - (n.d.) +1 other reference
ⓘ Toyohana mine	[Tephroite] - (n.d.)
ⓘ Namiita mine	[Tephroite] - (n.d.)
ⓘ Sainokami mine	[Tephroite] - (n.d.)
Shimohei District ⓘ Daiichi-Fukushi mine	[Tephroite] - (n.d.)
Fudai ⓘ Mitsune mine	[Tephroite] Fukuoka (1981)
ⓘ Hayachine mine	[Tephroite] - (n.d.)
Iwaizumi ⓘ Hijikuzu mine	[Tephroite] - (n.d.)
ⓘ Shintamagawa mine	[Tephroite] - (n.d.)
ⓘ Moichi mine	[Tephroite] - (n.d.)
Tanohata ⓘ Tanohata mine	[Tephroite] Matsubara (2003) +1 other reference
ⓘ Matsumaezawa pit	[Tephroite] Nagase et al. (2012)
Yamada-machi ⓘ Otaniyama mine	[Tephroite] - (n.d.)
Kagoshima Prefecture Kagoshima District Mishima village ⓘ Satsuma-Ioujima (Satsuma-Iwojima; Iou island)	[Fayalite] Dr. Yasuko Okuyama-Kusunose analysis +1 other reference
Kirishima City Hayato ⓘ Shimizu	[Fayalite] Alfredo Petrov observations on ...
Oshima District Setouchi-cho ⓘ Nishikata mine (Kudadon mine)	[Tephroite] Toyofumi Yoshimura et al. (1969) +1 other reference
ⓘ Nishikomi mine	[Tephroite] Toyofumi Yoshimura et al. (1969)
Yamato village ⓘ Yamato mine	[Tephroite] Toyofumi Yoshimura et al. (1969)
ⓘ Sakkabira	[Fayalite] Miyashiro (1956)
Kanagawa Prefecture Hadano City ⓘ Dainichi mine	[Tephroite] Mineralogical Journal Vol. 17 (1994)
Kochi Prefecture Kami City ⓘ Matsuo mine	[Tephroite] Toyofumi Yoshimura et al. (1969)
Nankoku city ⓘ Ananai mine	[Tephroite] Minakawa et al. (2008)
Kumamoto Prefecture ⓘ Ichinomata Mine	[Tephroite] Yoshimura et al. (pp. 457-467)
Kyoto Prefecture Kizugawa City ⓘ Hokkejino	[Tephroite] Am Min 85:242-250 +1 other reference
Kyoto City Ukyou-ku ⓘ Ashidani mine (Ashitani mine)	[Tephroite] Masutomi Museum specimens
ⓘ Shimonotani mine	[Tephroite] Masutomi Museum specimen (Kyoto)
ⓘ Shin-Otani mine	[Tephroite] Yamada (2004)
ⓘ Mukaiyama mine	[Tephroite] Mayumi Yoshinaga (1963)
Nantan City ⓘ Tamaiwa mine	[Tephroite] Toyofumi Yoshimura et al. (1969)
Soraku District Wazuka-cho ⓘ Sono mine	[Tephroite] Yoshinaga (1963)
Mie Prefecture Iga City ⓘ Yamada mine	[Tephroite] Fukuoka (1981)
Ise City Shobu ⓘ Shobu manganese deposit	[Tephroite] www.issp.u-tokyo.ac.jp (1997) +2 other references
Toba City ⓘ Hichishi mine	[Tephroite] Yamada (2004)
Miyazaki Prefecture Nishiusuki District Hinokage ⓘ Shimozuru mine	[Tephroite] Fukuoka (1981) +1 other reference
Takachiho ⓘ Akimoto mine	[Tephroite] Uehara et al. (2014)
ⓘ Toroku Mine	[Tephroite] Fukuoka (1981)
Nagano Prefecture Kamiina District ⓘ Hamayokokawa mine (Hamayokogawa mine)	[Tephroite] - (n.d.) +2 other references
ⓘ Asahi orebody	[Tephroite] Akira Kato (2011)
ⓘ Principal orebody	[Tephroite] Akira Kato (2011)
ⓘ Kiyotaki mine	[Tephroite] H. Momoi (1964)
Matsumoto City ⓘ Yagisawa mine	[Tephroite] Yoshinaga (1959) +1 other reference
Okayama Prefecture ⓘ Abandoned unnamed mine	[Fayalite] Sueoka Y (2013)
Saga Prefecture Karatsu City Kyuuragi-machi ⓘ Kyuuragi mine (Kyuragi mine)	[Tephroite] - (n.d.) +1 other reference
Saitama Prefecture Chichibu City Ohtaki-mura Nakatsugawa ⓘ Chichibu mining district	[Tephroite] Akira Kato (2011)
Urayama ⓘ Hirogawara mine (Hirogawarasawa)	[Tephroite] K. Nishikubo et al. (2005)
Hanno City ⓘ Oukura mine (Ohkura mine)	[Tephroite] Kato (2010)
Hidaka City ⓘ Oumiya mine (Ohmiya mine; Omiya mine)	[Tephroite] Akira Kato (2009)
Shiga Prefecture Gamo District ⓘ Yaei mine	[Tephroite] Fukuoka (1981)
Kusatsu City ⓘ Ioi mine	[Tephroite] Mayumi Yoshinaga (1963) +3 other references
Takashima City ⓘ Kumanohata mine	[Tephroite] Petrov (n.d.) +1 other reference
Shimane Prefecture Kanoashi District Tsuwano ⓘ Toyoka mine	[Tephroite] Fukuoka (1981)
Oki District Okinoshima Oki Islands ⓘ Dogo Island	[Fayalite] Tomita (1936) +5 other references
Tochigi Prefecture ⓘ Hokkohji mine	[Tephroite] 加藤昭 (1980) +1 other reference
ⓘ Juuniyashima mine	[Tephroite] Fukuoka (1981)
Kanuma City Awano ⓘ Yokoneyama mine	[Tephroite] - (n.d.)
ⓘ Kanoiri mine	[Tephroite] Kato (1991)
ⓘ Kaso Mine	[Tephroite] Akira Kato (undated manuscript) +1 other reference
Kusagyu ⓘ Oashi mine (Ou'ashi mine)	[Tephroite]
ⓘ Takanosu mine	[Tephroite] Fukuoka (1981)
ⓘ Kuranosawa mine	[Tephroite] Fukuoka (1981)
Nikko City Ashio ⓘ Kyurasawa mine	[var: Knebelite, Tephroite] Introduction to Japanese Minerals (Geological Survey of Japan, 1970)
ⓘ Odaki orebody	[Tephroite] KATO Akira et al. (1994)
ⓘ Takahira mine	[Tephroite] Fukuoka (1981)
Tokushima Prefecture Naka District ⓘ Nirou mine (Niro mine)	[Tephroite] Matsubara et al. (1988)
Tokyo Metropolis Nishitama district Okutama-cho ⓘ Kiyokawa mine	[Tephroite] N. Aikawa (1987)
ⓘ Okutama mine	[Tephroite] Bull. Kanagawa pref. Mus. (Nat. Sci.)
ⓘ Shiromaru mine (Hakumaru mine)	[Tephroite] - (n.d.) +1 other reference
Tottori Prefecture ⓘ Mizutani mine	[Tephroite] Fukuoka (1981)
ⓘ Ou'idani mine (Oidani mine)	[Tephroite] Fukuoka (1981)
Yamaguchi Prefecture Iwakuni City ⓘ Renge mine	[Tephroite] Lee (1955) +1 other reference
ⓘ Wagi mine (Waki mine)	[Tephroite] H. Momoi (1964) +1 other reference
ⓘ Kinko mine	[Tephroite] Lee (1955) +1 other reference
Kudamatsu City ⓘ Fukumaki mine	[Tephroite] Fumitoshi HIROWATARI (1961) +2 other references
Kuga District ⓘ Furujuku mine (Furushuku mine)	[Tephroite] Fukuoka (1981)
ⓘ Kusugi Mine	[Tephroite] Lee (1955) +1 other reference
ⓘ Zohmeki adit	[Tephroite] H. Momoi (1964)
ⓘ Tennoh mine (Tenno mine)	[Tephroite] H. Momoi (1964)
ⓘ Tsutsumi mine	[Tephroite] Fukuoka (1981)
Kazakhstan
Jambyl Region ⓘ Burultas deposit	[Tephroite] - (1993)
Ulytau Region Karazhal ⓘ Ushkatyn deposits (Ushkatan)	[Tephroite] Kayupova (1965) +1 other reference
ⓘ Ushkatyn No. 1 deposit	[Tephroite] Kayupova (1964)
Zhayrem (Zhairem) ⓘ Ushkatyn No. 3 deposit (Ushkatyn-III deposit)	[Tephroite] Brusnitsyn et al. (2023) +2 other references
Zhanaarka District Atasu Mine ⓘ Zhomart Fe-Mn deposit (Dzhumart)	[Tephroite] Kayupova (1963) +1 other reference
Kenya
ⓘ Baringo-Laikipia Volcanic Area	[Fayalite] Hackmann +3 other references
Baringo County ⓘ Kilombe volcano	[Fayalite] RIDOLFI et al. (2006)
ⓘ Korosi Volcano	[Fayalite] Hackmann +1 other reference
ⓘ Ribkwo Volcano	[Fayalite] Webb +2 other references
Kajiado County ⓘ Mount Suswa (Suswa Volcano)	[Fayalite] Johnshon (1969) +7 other references
Meru County Mount Kenya National Park ⓘ Mount Kenya	[Fayalite] Gregory (1900) +6 other references
Nakuru County ⓘ Greater Olkaria Volcanic Complex	[Fayalite] Davies et al. (1987) +4 other references
ⓘ Lake Naivasha	[Fayalite] Bowen N L (1935)
ⓘ Longonot Volcano	[Fayalite] Scott (1980) +4 other references
ⓘ Naivasha Volcanic Area	[Fayalite] Thompson et al. (1963) +2 other references
Samburu County ⓘ Emuruangogolak Volcano	[Fayalite] Shotton et al. (1974) +5 other references
Turkana County ⓘ Kafkandal Volcano	[Fayalite] Webb +1 other reference
ⓘ Maralal volcanic area	[Fayalite] Shackleton (1946) +4 other references
ⓘ Nasaken Volcano	[Fayalite] Weaver et al. (1972) +1 other reference
ⓘ Silali Volcano	[Fayalite] McCall et al. (1972) +3 other references
Kyrgyzstan
Issyk-Kul Region Inyl'chek Range Muzeinyi Valley ⓘ Rhodonite occurrence	[Tephroite] Pekov (1998)
Lithuania
Panevėžys County Panevėžys City Municipality ⓘ Jodzie meteorite	[Fayalite] Zolensky et al. (1996) +1 other reference
Madagascar
Atsimo-Andrefana Betioky District Lazarivo ⓘ Lazarivo deposit	[Tephroite] Behier (1963)
Diana Ambanja District Anorotsangana ⓘ Bezavona Massif	[Fayalite] Lacroix (1922) +2 other references
ⓘ Massif d'Ambre	[Fayalite] Lacroix (1922) +5 other references
Malawi
Southern Region Mulanje ⓘ Mlanje Massif	[Fayalite] pdfs.semanticscholar.org (n.d.) +5 other references
ⓘ Mulanje Massif (Mlange Massif)	[Fayalite] Wooley (2001)
Zomba ⓘ Mount Malosa	[Fayalite] alkcarb.myrocks.info (n.d.)
Mali
Kidal Region Kidal Cercle ⓘ Kidal-Tibeljeljeline Complex	[Fayalite] Black et al. (1979) +2 other references
Mauritania
Dakhlet Nouadhibou Region Nouadhibou ⓘ Galb Inal meteorite	[Fayalite] - (2010)
Mexico
Chihuahua Aquiles Serdán Municipality Santa Eulalia Mining District West Camp Francisco Portillo ⓘ Potosí Mine	[Fayalite] Panczner (1987)
Pueblito de Allende ⓘ Allende meteorite	[Fayalite] Imai H. and Yurimoto H. (2000)
Colima Manzanillo Municipality Revillagigedo Islands ⓘ Socorro Island	[Fayalite] doi.org/10.1093/petroj/38.9.1137 +3 other references
Hidalgo ⓘ Sierra de Las Navajas	[Fayalite] López-Velarde et al. (2025)
Middle East
ⓘ Hatrurim Formation	[Fayalite] Vapnik et al. (2006)
Mongolia
Dornogovi Province Erdene District ⓘ Khamaryn– Khural–Khiid combustion metamorphic complex	[Fayalite] Savina et al. (2020) +1 other reference
Khovd Province Myangad District Khaldzan Buragtag massif Mount Ulyn Khuren ⓘ Neprimetnyi pegmatite	[Fayalite] Kartashov et al. (2002)
ⓘ Tsakhirin Khuduk Y-Zr-Nb deposit	[Fayalite] Kovalenko et al. (2004)
Töv Province Bayan District ⓘ Nyalga combustion metamorphic complexes	[Fayalite] Peretyazhko et al. (2017)
Choir-Nyalga basin ⓘ Nyalga Combustion Metamorphic complex	[Fayalite] Peretyazhko et al. (2017) +1 other reference
ⓘ Camel	[Fayalite] Peretyazhko et al. (2018)
ⓘ Crown	[Fayalite] Peretyazhko et al. (2018)
Myanmar
Mandalay Region Pyin-Oo-Lwin District Mogok Township Mogok Valley ⓘ Ohngaing	[Fayalite]
Namibia
Oshikoto Region Tsumeb ⓘ Tsumeb smelter slag locality	[Fayalite] Ettler et al. (2009)
Otjozondjupa Region Otavi Constituency Kombat ⓘ Kombat Mine	[Tephroite] Dunn (1991)
ǁKaras Region Berseba Constituency Berseba Townlands Farm 426 Brukkaros Complex ⓘ Blue Hills Intrusive Complex	[Fayalite] Reinhard et al. (2025)
Netherlands
Limburg Kerkrade ⓘ Willem-Sophia mine	[Fayalite] De Wit et al. (2003)
New Zealand
Bay of Plenty Region Mayor Island (Tuhua) ⓘ Taratimi Bay (Crater Bay)	[Fayalite] Collection of Rod Martin
Rotorua District Mount Ngongotaha ⓘ Hendersons Quarry	[Fayalite] Martin Stolworthy Collection
Okataina ⓘ Mount Tarawera	[Fayalite] Collection of RJ Martin inferred from ...
Canterbury Region Christchurch City ⓘ Banks Peninsula	[Fayalite] Sewell +7 other references
Nelson Region Aniseed Valley Champion Copper Mine ⓘ Champion Copper Mine smelter slag locality	[Fayalite] Collection of RJ Martin
Southland Region Southland District Fiordland National Park Preservation Inlet Tarawera Mine ⓘ Smelter	[Fayalite] Collection of RJ Martin
Taranaki Region ⓘ Mokoia meteorite	[Fayalite] Brearley et al. (1998)
Waikato Region Taupo District ⓘ "K" Trig Quarry	[Fayalite] Brown et al. (1994)
Atiamuri ⓘ Ongaroto Road	[Fayalite] Personal collection of Rod Martin
Lake Taupo ⓘ 3 Mile Bay	[Fayalite] Collection of RJ Martin
ⓘ 4 Mile Bay	[Fayalite] Collection of Rod Martin
ⓘ Rangatira Point (Ponui Point)	[Fayalite] Collection of RJ Martin +1 other reference
ⓘ Tapuaeharuru Bay	[Fayalite] Thornton (Ed.)
ⓘ Western Shore	[Fayalite] Collection of Rod Martin
ⓘ Whakaipo Bay	[Fayalite] Collection of RJ Martin correlated to ...
ⓘ Wharewaka	[Fayalite] Essence of Microscope
Poihipi Road ⓘ Poihipi Rd basalt Quarry	[Fayalite] Collection of RJ Martin
ⓘ Scarp Section	[Fayalite] Collection of RJ Martin correlated to ...
Thames-Coromandel District Hikuai Broken Hills ⓘ Broken Hills Mine	[Fayalite] Collection of RJ Martin correlated to ...
ⓘ Puketui Road mordenite locality	[Fayalite] Rod Martin personal collection
Tairua River ⓘ 4th Branch	[Fayalite] R. Martin. Tairua Essence of Microscope
ⓘ Tairua River boulder bank	[Fayalite] Collection of RJ Martin correlated to ...
Niger
Agadez ⓘ Iskou ring complex	[Fayalite] consequences. Bulletin de la Société géologique de France (6) +3 other references
Diffa Maïné-Soroa ⓘ Gamedou occurrence	[Fayalite] Garde
Zinder ⓘ Tchouni-Zarniski Complexes	[Fayalite] consequences. Bulletin de la Société géologique de France (6) +2 other references
Nigeria
Bauchi Shira ⓘ Shira Complex	[Fayalite] Bennett et al. (1984) +1 other reference
Jigawa Birnin Kudu ⓘ Birnin Kudu Complex	[Fayalite] Bennett et al. (1984)
Dutse ⓘ Dutse Complex	[Fayalite] Bennett et al. (1984) +3 other references
Katsina Faskari ⓘ Zagami Martian meteorite	[Fayalite] T.J. McCoy +1 other reference
Plateau Jos Plateau ⓘ Kigom	[Fayalite] OMADA et al. (2003)
Younger ring complex ⓘ Jos-Bukuru	[Fayalite] Woolley (2001) +1 other reference
North Korea
Ryanggang Province Samjiyon City ⓘ Paektu Mountain	[Fayalite] Abstracts of the Eighth International Conference on Geochronology and Isotope Geology (1994)
ⓘ Nordmarkite ejecta	[Fayalite] Suzuki (1938)
Northwest Africa Meteorites
ⓘ Northwest Africa 11119 meteorite (NWA 11119)	[Fayalite] Srinivasan et al. (2018)
ⓘ Northwest Africa 1460 Martian meteorite (NWA 1460)	[Fayalite] Irving et al. (2003, March)
ⓘ Northwest Africa 3170 Lunar meteorite (NWA 3170)	[Fayalite] Gu et al. (2025)
ⓘ Northwest Africa 480 Martian meteorite (NWA 480)	[Fayalite] Barrat et al. (2001)
ⓘ Northwest Africa 4964 meteorite (NWA 4964)	[Fayalite] www.lpi.usra.edu (n.d.)
ⓘ Northwest Africa 5790 meteorite (NWA5790)	[Fayalite] Jambon et al. (2010)
ⓘ Northwest Africa 5958 meteorite (NWA5958)	[Fayalite, Fayalite var: Ferrohortonolite] Jacquet et al. (2016) +1 other reference
ⓘ Northwest Africa 6991 meteorite (NWA 6991)	[Fayalite] Houde et al. (2023)
ⓘ Northwest Africa 7203 meteorite (NWA 7203)	[Fayalite] Mikouchi et al. (2012) +1 other reference
ⓘ Northwest Africa 856 Martian meteorite (NWA 856; Djel Ibone Martian meteorite)	[Fayalite] Leroux et al. (2006)
Norway
ⓘ Bouvet Island	[Fayalite] Prestvik et al. (1999)
ⓘ Kapp Valdivia	[Fayalite] Prestvik et al. (1999)
Buskerud Ringerike ⓘ Ringerike Ni Mines	[Fayalite] Knut Edvard Larsen collection # MM-3621 ( Ex Harald Folvik collection)
Nordland Vågan ⓘ Holandshamn	[Fayalite] Griffin et al. (1974)
Telemark Porsgrunn Langangen Kokkersvold - Blåfjell E18 roadcuts ⓘ Blåfjell (E18 roadcuts)	[Fayalite] Grice et al. (2013)
ⓘ Ferrochiavennite dike	[Fayalite] Grice et al. (2013)
Tokke Botnedal ⓘ Brandsnuten manganese deposit	[Tephroite] Wel (1974) +1 other reference
Vestfold Færder ⓘ Sandø	[Fayalite] Larsen et al. (2010)
Larvik Commune Brunlanes ⓘ Naverfjorden East	[Fayalite] Neumann (1985)
Malerød ⓘ Malerød Quarry	[Fayalite] Neumann (1985)
Tjølling ⓘ Ranvika	[Fayalite] Kvamsdal (2023)
Tvedalen Tuften ⓘ A/S Granit Quarry	[Fayalite] Peter Andresen collection - 2011
Oman
Al Wusta Governorate ⓘ Ghubara meteorite	[Fayalite] Binns (1968)
Dhofar Governorate ⓘ Dhofar 287 Lunar meteorite (Dho 287)	[Fayalite] Taylor et al. (2001)
ⓘ Dhofar 378 Martian meteorite (Dho 378)	[Fayalite] Yukio et al. (2006)
ⓘ Dhofar 925 Lunar meteorite (Dho 925)	[Fayalite] - (2004, July)
Peru
Lima Oyón Province Oyón District Uchucchacua area ⓘ Uchucchacua Mine	[Tephroite] Bussell et al. (1990) +1 other reference
Poland
Lesser Poland Voivodeship Chrzanów County Gmina Trzebinia Trzebinia smelting plant ⓘ Trzebinia waste dump	[Fayalite] Włodyka et al. (2015)
Lower Silesian Voivodeship Świdnica County ⓘ Gmina Strzegom
ⓘ Strzegom	[Fayalite] Janeczek (1989)
Silesian Voivodeship Bytom Orzeł Biały Mine ⓘ Slag localities	[Fayalite] Neschen (n.d.)
Tarnowskie Góry County Miasteczko Śląskie ⓘ HC Miasteczko Śląskie S.A. Zinc Smelting Plant	[Fayalite] Nowinska (2020)
Portugal
Azores ⓘ Faial	[Fayalite] Gmelin (1840)
ⓘ Horta	[Fayalite] von Fellenberg (1840)
Conceição ⓘ Ponta de Espalamaca	[Fayalite] von Fellenberg (1840)
ⓘ Pico	[Fayalite] von Fellenberg (1840)
São Miguel ⓘ Água de Pau Volcano	[Fayalite] Cann (1967)
ⓘ Terceira	[Fayalite] Weston (1964) +6 other references
Angra do Heroísmo ⓘ Caldeira-Castelinho Ignimbrite Formation	[Fayalite] Jeffery et al. (2016)
Beja Almodôvar Almodôvar e Graça dos Padrões Brancanes ⓘ Brancanes Mine	[Fayalite] Oliveira et al. (2025)
Romania
Bistrița-Năsăud County Rodna Valea Vinului ⓘ Valea Vinului Mine	[Fayalite, Tephroite] Papp et al. (2005)
ⓘ Bistriţa Mn belt	[Tephroite] Hîrtopanu et al. (2003)
Caraş-Severin County Brebu ⓘ Delineşti deposit	[Tephroite] Hîrtopanu et al. (2003)
Galați County Galați ⓘ Galați smelter	[Fayalite] Hirtopanu (2006) +1 other reference
Harghita County ⓘ Mezö-Madaras meteorite (Fekete; Madaras; Maros; Mesö-Madarasz; Mezoe-Madaras; Weiler [NHM Cat.])	[Fayalite] Binns (1968) +1 other reference
Maramureș County Târgu Lăpuș ⓘ Răzoare	[Fayalite, Tephroite] Udubasa et al. (1996) +5 other references
Suceava County Iacobeni ⓘ Arșița mine	[Tephroite] minerals-of-the-carpathians.eu (2008)
Tolovanu ⓘ Tolovanu (Tolovan) Mn deposit	[Tephroite] Hîrtopanu (1997) +1 other reference
ⓘ Şaru Dornei	[Tephroite] minerals-of-the-carpathians.eu (2008)
Russia
Bashkortostan ⓘ Bikkulovskoe deposit	[Tephroite] Brusnitsyn et al. (2009)
Sibay ⓘ Yuzhno-Faizulinskoe Mn deposit (South Faizuly deposit; South Faizulino deposit)	[Tephroite] Brusnitsyn (2006)
Uchalinsky District ⓘ Kyzyl-Tash manganese deposit (Kyzil-Tash deposit)	[Tephroite] Pavel M. Kartashov (n.d.)
Chechnya Mekensk ⓘ Groznaya meteorite (Grosnaja meteorite)	[Fayalite]
Chelyabinsk Oblast Chebarkulsky District ⓘ Zmeinogorskoe Mn deposit	[Tephroite] Chukanov et al. (2021)
ⓘ Chelyabinsk coal basin	[Fayalite] Cesnokov et al. (1998)
ⓘ Chelyabinsk meteorite (Chebarkul meteorite)	[Fayalite] Sharygin et al. (2013)
Kopeysk ⓘ Coal mine No. 45	[Fayalite] Chesnokov et al. (1989) +2 other references
ⓘ Mount Karandash	[Fayalite] Victor Grigorievich Korinevsky et al. (16)
Khabarovsk Krai Taikan Ridge Ir-Nimi manganese deposit ⓘ Dzhavodi area	[Tephroite] V.V. Kalinin data
Komi Republic ⓘ Parnok Fe-Mn deposit (Parnokskoye deposit)	[Tephroite] Brusnitsyn +1 other reference
Krasnoyarsk Krai ⓘ Kingash	[Fayalite] Radomskaya et al. (2017)
Taymyrskiy Autonomous Okrug Taimyr Peninsula ⓘ Khungtukun Massif	[Fayalite] Frank K. Mazdab collection (see https://www.rockptx.com/fkm-226-to-fkm-250/#FKM-226 for normalized analyses)
Norilsk-Talnakh Mining Region Snezhnogorsk ⓘ Chernogorsky massif	[Fayalite] Krivolutskaya et al. (2021)
Taymyrsky Dolgano-Nenetsky District ⓘ Kresty Volcano–Plutonic Complex	[Fayalite] Sazonov et al. (2024)
Kurgan Oblast ⓘ Kargapole meteorite	[Fayalite] Erokhin et al. (2017, December)
Magadan Oblast Omsukchansky District Ducat ore field ⓘ Lunnyi Mine (Lunnoye)	[Fayalite] Sergeevna (2020)
Murmansk Oblast ⓘ Eveslogchorr Mt	[Fayalite] Yakovenchuk et al. (2008)
Kukisvumchorr Mt East slope ⓘ Tuliok River head	[Fayalite] European Journal of Mineralogy 19 (2007)
ⓘ Marchenko Peak	[Fayalite] Menshikov et al. (2015)
ⓘ Lovozero Massif	[Fayalite] ...
ⓘ Yudychvumchorr Mountain	[Fayalite] Konopleva et al. (2008) +1 other reference
ⓘ Yum'echorr Mt (Yumjechorr)	[Fayalite] Konopleva et al. (2008) +1 other reference
Nenets Autonomous Okrug Yugorskii Peninsula Pai-Khoi Range (Paikhoi; Pay Khoy) ⓘ Nadeiyakha occurrence	[Tephroite] Brusnitsyn et al. (2019)
ⓘ Silovayakhinskoye occurrence	[Tephroite] Старикова (2011)
North Ossetia–Alania Sadon ore district ⓘ Dzhimidon Pb-Zn deposit	[var: Knebelite] Groznova et al (2005) +1 other reference
Primorsky Krai Dalnegorsk Urban District ⓘ Yuzhnoe Pb-Zn-Ag deposit	[var: Knebelite] Ratkin et al. (2021)
Khasansky District ⓘ Kedrovaya Pad Nature Reserve	[Tephroite] Timofeeva et al. (2014)
ⓘ Ol’ga ore district	[Tephroite] Kazachenko et al. (2006, July)
Olginsky District ⓘ Taukha terrane	[Fayalite, Tephroite] Kazachenko et al. (2013)
ⓘ South Primor'ye deposit	[var: Knebelite] Kazachenko et al. (1979)
Republic of Karelia Pitkyarantsky District Kitelya ⓘ Kitelskoe Sn-Zn deposit	[Fayalite] V.A. Gorelov (1997)
Suojärvi District ⓘ Kuolisma gabbrodolerite	[Fayalite] Коневин et al. (2020)
ⓘ Sakha	[Fayalite] [World of Stones 12:49]
Aldan ⓘ Unnamed placers	[Tephroite] A.A. Kim (2001)
ⓘ Bolshaya Yukhta stream	[Tephroite] Kim et al. (1989) +1 other reference
ⓘ Kildyam volcano complex	[Fayalite] Kostin (2020) +1 other reference
ⓘ Malaya Yukhta stream	[Tephroite] Kim et al. (1989) +1 other reference
Mirninsky District Daldyn ⓘ Udachnaya open-pit mine (Udachnaya-Vostochnaya pipe; Udachnaya pipe)	[Fayalite] Mikhailenko +5 other references
Selennyakh range Tommot river ⓘ Somnitelnyi Massif	[Fayalite] Trunilina et al. (2022)
ⓘ Taezka stream	[Tephroite] Kim et al. (1989) +1 other reference
Verkhoyansk Fold Belt Verkhoyansk Silver Province ⓘ Prognoz Sn-Ag deposit	[Fayalite] Gamyanin et al. (1998)
Sverdlovsk Oblast Sysertsky District ⓘ Borodulinskoe deposit	[Tephroite] Brusnitsyn (2000)
Sedel'nikovo ⓘ Malosedel'nikovskoe deposit	[Tephroite] Brusnitsyn A.I. (2000)
Yekaterinburg Kurganovo ⓘ Kurganovskoe deposit	[Tephroite] Brusnitsyn A.I. (2000)
Tyumen Oblast ⓘ Sob	[Tephroite] Brusnitsyn et al. (2017)
Yamalo-Nenets Autonomous Okrug Labytnangi ⓘ Ozernoe Occurrence	[Fayalite] Murzin et al. (2022)
Saint Helena， Ascension and Tristan da Cunha
ⓘ Ascension Island	[Fayalite] Bell (1967) +41 other references
ⓘ 5 mile post	[Fayalite] Harris et al. (1982)
ⓘ Gough Island	[Fayalite] Le Maitre (1959) +5 other references
Tristan da Cunha Archipelago ⓘ Inaccessible Island	[Fayalite] Baker et al. (1964) +2 other references
Saint Lucia
Choc ⓘ Rhyolite dykes	[Fayalite, Fayalite var: Ferrohortonolite] M. Le Guen de Kerneizon et al. +1 other reference
Grande Rivière Village Morne Serpent hill ⓘ Rhyolite flow	[Fayalite] M. Le Guen de Kerneizon et al.
Saudi Arabia
Ha'il Region ⓘ Silsilah Deposit	[Fayalite] du Bray +2 other references
Medina Region ⓘ Harrats Khaybar	[Fayalite] Baker et al. (1973) +1 other reference
Seychelles
ⓘ Silhouette Island	[Fayalite] Baker (1963) +1 other reference
Slovakia
Košice Region Gelnica District Smolník ⓘ Hekerová manganese deposit	[Fayalite, Tephroite] Myšľan et al. (2025)
Rožňava District Betliar ⓘ Július manganese occurrence	[Tephroite] Myšľan et al. (2024)
Čučma ⓘ Čierna baňa	[var: Knebelite, Fayalite, Tephroite] Koděra et al. (1986)
Dobšiná Dobšiná mining district ⓘ Danková serpentinite body	[Fayalite] Háber et al. (Dankova, SGR Mnts)
ⓘ Teliatko serpentinite body	[Fayalite] Pauliš et al. (2002)
South Africa
Gauteng City of Tshwane Metropolitan Municipality ⓘ Vergenoeg Mine	[Fayalite] Company web site +2 other references
Limpopo Waterberg District Municipality Bela-Bela Local Municipality Bela-Bela ⓘ Zwartkloof defunct Fluorite Mine	[Fayalite] Mineral Deposits of Southern Africa
Mogalakwena Local Municipality Mokopane ⓘ Tweefontein Farm	[Fayalite] Buchanan et al. (1981)
North West Bojanala Platinum District Municipality Moses Kotane Local Municipality Pilanesberg Alkaline Ring Complex ⓘ Pilanesberg Mountain	[Fayalite] Cairncross et al. (1995)
Rustenburg Local Municipality Rustenburg ⓘ Waaikraal gold deposit	[Fayalite] Verryn et al. (1991)
Northern Cape John Taolo Gaetsewe District Municipality Joe Morolong Local Municipality ⓘ Avontuur deposit	[Tephroite] Coetzee et al. (2024)
N'Chwaning Mines ⓘ N'Chwaning II Mine	[Tephroite] Cairncross et al. (1995)
ⓘ Wessels Mine	[Tephroite] Pohl et al. (1991) +1 other reference
Namakwa District Municipality Khâi-Ma Local Municipality ⓘ Aggeneys	[var: Knebelite] Cairncross et al. (1995)
Pixley ka Seme District Municipality Ubuntu Local Municipality ⓘ Silvery Home lamproite	[Fayalite] Abersteiner et al. (2024)
Western Cape Cape Winelands District Municipality Witzenberg Local Municipality Koue Bokkeveld Mountain ⓘ Koue Bokkeveld meteorite	[Fayalite] MacDougall et al. (1977) +1 other reference
South Korea
North Gyeongsang Province Ulleung County ⓘ Ulleungdo	[Fayalite] Kim +7 other references
North Jeolla Province Jinan County Mount Munpilbong ⓘ Jinan Daeryang-ri copper smelter	[Fayalite] Choi et al. (2024)
Spain
Andalusia Almería Cuevas del Almanzora Sierra Almagrera Villaricos ⓘ Dolores smelter slag locality	[Fayalite] Navarro et al. (2008)
ⓘ Santa Ana smelter slag locality	[Fayalite] Navarro et al. (2008)
Córdoba Obejo ⓘ Slag dumps	[Fayalite] Calabrés +2 other references
Huelva Los Marines ⓘ Sierra de Aracena	[Tephroite] Jiménez-Millán et al. (1997)
Minas de Riotinto ⓘ Rio Tinto Mines	[Tephroite] Bocamina (4)
Canary Islands Santa Cruz de Tenerife Province Tenerife Arico ⓘ Tajao	[Tephroite] Dill et al. (2023)
Catalonia Tarragona Priorat El Molar ⓘ Serrana Mine (Manganese Mine)	[Tephroite] Mineralogistes de Catalunya
Community of Madrid ⓘ Cadalso de los Vidrios	[Fayalite] Garcia G. et al. (2004)
La Cabrera ⓘ La Cabrera pluton	[Fayalite] Tánago et al. (2012)
Murcia Mazarrón ⓘ Mazarrón shipwreck II	[Fayalite] Doménech-Carbó et al. (2024)
Sri Lanka
North Central Province Anuradhapura District ⓘ Seruwila deposit	[Fayalite] Samarakoon et al. (2021)
Sweden
Dalarna County Borlänge ⓘ Tuna-Hästberg	[var: Knebelite] Lindsten et al. (2015)
Hedemora Garpenberg ⓘ Garpenberg Norra Mine	[Tephroite] Min Mag 66 (2) +1 other reference
Hag mine ore field ⓘ Pålsbenning Mine	[var: Knebelite]
ⓘ Holmgruve ore field	[var: Knebelite]
ⓘ Långvik ore field	[var: Knebelite]
Ludvika ⓘ Burängsberg ore field	[var: Knebelite]
ⓘ Fjäterbäck mines	[var: Knebelite]
ⓘ Hillängs Mine	[var: Knebelite, Fayalite, Tephroite] Dana 6:457. +1 other reference
ⓘ Högberg mine	[var: Knebelite]
ⓘ Skeppartäkt mine	[var: Knebelite]
Smedjebacken ⓘ Närsjö mine	[var: Knebelite]
ⓘ Röjning mines	[var: Knebelite]
ⓘ Skisshyttan	[var: Knebelite] Natural History Museum ( item # HS1392, Hj. Sjögren collection)
ⓘ Väster Silvberg	[var: Knebelite] Natural History Museum
ⓘ Stollberg orefield	[var: Knebelite] Natural History Museum ( item # 19530399, N. Sundius collection)
ⓘ Svartberg orefield	[var: Knebelite]
ⓘ Cedercreutz Mine	[var: Knebelite] Jansson et al. (2013)
ⓘ Slädboberg Mine	[var: Knebelite] Weibull (1883)
Gävleborg County Hofors ⓘ Afze Mine	[var: Knebelite] SGU rapp130 (2009)
ⓘ Sjöström mine	[var: Knebelite]
Torsåker ⓘ Beskow Mines	[var: Knebelite]
ⓘ Linderås Mines	[var: Knebelite] SGU rapp130 (2009)
ⓘ Penning Mines	[var: Knebelite]
Ljusdal Los ⓘ Mansjöberg Fe Mine	[var: Knebelite] Stenberg (2002)
Ovanåker ⓘ Loberget	[var: Knebelite, Fayalite]
Jämtland County Strömsund ⓘ Muruhatten	[Fayalite]
Jönköping County Jönköping Månsarp ⓘ Smålands Taberg	[Fayalite] Hjelmqvist (1950)
Örebro County Askersund ⓘ Åmme mines	[var: Knebelite]
Zinkgruvan ⓘ Zinkgruvan mine	[Fayalite] Sandström et al. (2011)
Hällefors Grythyttan ⓘ Brunnsjögruvan	[var: Knebelite]
ⓘ Sjögruvan	[Tephroite] Palache et al. (1951) +2 other references
ⓘ Hällefors silver mines	[var: Knebelite] Jasinski (1983)
Hallsberg ⓘ Fromma mines	[var: Knebelite]
Lindesberg Fanthyttan ⓘ Fanthyttan ore field	[var: Knebelite]
Limnäs ⓘ Limnäs ore field	[var: Knebelite]
ⓘ Mårshyttan ore field	[var: Knebelite]
Siggeboda ⓘ Siggeboda ore field	[var: Knebelite]
Ljusnarsberg ⓘ Basttjärn ore field	[var: Knebelite]
Kopparberg ⓘ Kaveltorp Mines	[Fayalite]
ⓘ Krigstjärn ore field	[var: Knebelite]
ⓘ Silkesberg ore field	[var: Knebelite]
Nora ⓘ Viker ore field	[var: Knebelite]
Örebro Vintrosa ⓘ Sanna mines	[var: Knebelite]
Södermanland County Nyköping Svärta ore field ⓘ Gillinge mine	[var: Knebelite, Fayalite]
Tunaberg ⓘ Stora Uttersvik	[var: Knebelite, Fayalite]
ⓘ Strömshult Mines	[var: Knebelite, Fayalite]
Strängnäs Åker ⓘ Bredsjönäs Mines	[var: Knebelite] Torstensson (2004)
Uppsala County Östhammar Dannemora ⓘ Dannemora Mine	[var: Knebelite] Åberg (2015) +1 other reference
Uppsala Almunge ⓘ Almunge complex	[Fayalite]
Värmland County Filipstad Gåsborn ⓘ Gåsborn Mines	[var: Knebelite, Tephroite]
Långban Ore District ⓘ Långban Mine	[Tephroite, Tephroite var: Picrotephroite] Holtstam et al. (1999) +1 other reference
Nordmark mining district ⓘ Jakobsberg ore field	[Tephroite] Magnusson (1929)
ⓘ Jakobsberg Mine	[Tephroite] Blomstrand (1874)
Nordmark Odal Field ⓘ Brattfors Mine	[Tephroite] Moore (1978) +1 other reference
ⓘ Kitteln Mine	[Tephroite] Holtstam et al. (1998)
Persberg ore district ⓘ Gåsgruvan ore field	[Fayalite] Sandström et al. (2009)
ⓘ Gåsgruvan Quarry	[Fayalite] Östra Värmlands Mineral Society
Pajsberg ⓘ Harstigen Mine	[Tephroite, Tephroite var: Picrotephroite] Flink (1916) +1 other reference
ⓘ Stora Pajsberg Mine	[Tephroite, Tephroite var: Magnesium-bearing tephroite]
Västerbotten County Lycksele ⓘ Svartliden Gold Mine (Svartliden)	[Fayalite] Johan Söderhielm
Västmanland County Fagersta Västanfors ⓘ Hedkärra Mine	[Fayalite]
Norberg ⓘ Johannisberg mine	[var: Knebelite]
Sala Municipality Saladamm Ore field ⓘ Åbylund 4 Mine	[Tephroite] Nysten (2020)
ⓘ Grindgruvan 1	[Tephroite] Bjernulf et al. (2021)
Västra Götaland County Åmål Strandhem ore field ⓘ Kesebol mine	[Tephroite]
Switzerland
Grisons Maloja Region Bregaglia Upper Val Bregaglia Casaccia ⓘ Mota Farun slag locality	[Fayalite] Wenk +4 other references
Samedan Piz Corvatsch ⓘ Furtschellas deposit	[Tephroite] Lareida (1989) +1 other reference
ⓘ Murtel	[Tephroite] Stalder et al. (1998)
Viamala Region Ferrera Ausserferrera ⓘ Schmorrasgrat-South	[Tephroite] Brugger J. (1996)
Rheinwald Splügen ⓘ Tanatz Alp	[Tephroite] Stalder et al. (1998)
Ticino Lugano Alto Malcantone Breno ⓘ Slag locality	[Fayalite] Stalder et al. (1998)
Valais Leuk Turtmann-Unterems Turtmann Valley Pipjitälli ⓘ Pipji glacier	[Tephroite] Ansermet (2012)
Sierre Anniviers Zinal ⓘ Louchelet	[Tephroite] Ansermet (2012)
Visp Täsch Täsch Valley ⓘ Sparrenflue	[Tephroite] Stalder et al. (1998)
Tajikistan
Sughd Ayni District Fan-Jagnob coal deposit ⓘ Kukhi-Malik tract	[Fayalite] Sharygin et al. (2009)
Gissar Range ⓘ Odzhuk pegmatite	[Fayalite] Pavel M. Kartashov (n.d.)
Turkey
Ankara Province Altındağ District ⓘ Gicik Au-Ag ± Te deposit	[Fayalite] Çil et al. (2026)
Bitlis Province Ahlat District ⓘ Nemrut Volcano	[Fayalite] Pearce et al. (1990) +9 other references
Denizli Province Tavas Ulukent ⓘ Ulukent Mn deposit	[Tephroite] Öztürk (1997)
UK
England Cornwall Altarnun ⓘ Treburland Manganese Mine (Treburland manganese deposits)	[Tephroite] Russell (1946) +1 other reference
Crantock ⓘ The Gannel Smelter slag locality	[Fayalite] BMS Newsletter 79 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Devon West Devon Milton Abbot ⓘ Chillaton and Hogstor Mine	[Tephroite]
Okehampton Hamlets ⓘ Meldon Quarry	[Tephroite] Dearman (1966) +1 other reference
Lancashire West Lancashire Burscough ⓘ Burscough Quarry	[Fayalite] BMS Newsletter 14. British Micromount Society (June 1985)
Merseyside Wirral ⓘ Thurstaston Beach	[Fayalite] Day (1999)
Northern Ireland County Antrim ⓘ Portrush	[Fayalite var: Ferrohortonolite] Ryback et al. (1988)
County Down ⓘ Mourne Mountains	[Fayalite] Evans (1972)
Scotland East Lothian Haddington ⓘ Traprain Law	[Fayalite] Battey et al. (1962)
Highland Eilean á Chèo Isle of Skye Minginish ⓘ Cuillin Hills	[Fayalite] THOMPSON (1968) +2 other references
ⓘ Meall a'Mhaoil	[Fayalite] Emeleus et al. (1992)
ⓘ Meall Dearg granite	[Fayalite] THOMPSON (1968)
Sligachan ⓘ Marsco	[Fayalite] Emeleus et al. (1992)
Wester Ross， Strathpeffer and Lochalsh Lochalsh Dornie Keppoch ⓘ Allt a Mhuilin	[Fayalite] Render (n.d.)
North Ayrshire ⓘ Isle of Arran	[Fayalite] ...
Tormore ⓘ Judd's No. 1 dike	[Fayalite] Harris et al. (1954)
West Lothian ⓘ Pumpherston	[Fayalite var: Ferrohortonolite] Phemister (1942) +1 other reference
Wales Gwynedd Aberdaron Nant-y-Gadwen ⓘ Nant Mine	[Tephroite] Cotterell (2006)
Rhiw ⓘ Benallt Mine	[Tephroite] Liferovich et al. (2006)
Llanfair ⓘ Llyn du Bach mine	[Tephroite] Cotterell (2013)
Ukraine
Crimea Alushta ⓘ Ayu-Dag Mountain	[Fayalite] Alexander I. Tischenko (1996)
ⓘ Korsun-Novomirgorod pluton	[Fayalite] Krivdik et al. (1988)
Mykolayiv Oblast Pervomaisk Raion ⓘ Krymka meteorite	[Fayalite] Brearley et al. (1998)
Zhytomyr Oblast Zhytomyr Raion Khoroshiv Raion (Volodarsk-Volynskii) ⓘ Volyn Pegmatites	[Fayalite] Shumlyanskyy et al. (2021)
United Arab Emirates
Bani Hamid complex ⓘ Hajar	[Tephroite] Gnos et al. (2000)
USA
Alaska Denali Borough ⓘ Mystic Creek Coal Basin	[Fayalite] Reidel et al. (2023)
American Samoa ⓘ Tutuila Island	[Fayalite] Stearns (1944) +5 other references
Arizona Gila County Peridot ⓘ San Carlos Peridot area	[Fayalite] Galbraith (1959) +2 other references
ⓘ Tolklai	[Fayalite] Galbraith (1959) +2 other references
Mohave County Alamo Crossing ⓘ Unnamed Mn-Ba occurrence [1]	[Tephroite] Anthony et al. (1995)
California Amador County Fiddletown Mining District (Oleta Mining District) Fiddletown (Oleta) ⓘ Germolis prospect (Rodon; Rodonick; Germolie; Cormolis)	[Tephroite] Hewett et al. (1961) +3 other references
ⓘ Lubanko prospect	[Tephroite] Hewett et al. (1961) +2 other references
Butte County Clipper Mills Mining District Clipper Mills ⓘ Bear Canyon Mine	[Tephroite] Hewett et al. (1961) +3 other references
ⓘ Benet prospect	[Tephroite] Hewett et al. (1961) +3 other references
Calaveras County Foothill Copper Belt Campo Seco Mining District Campo Seco Penn Mine (Happy Jack; West Constellation; Satellite; Big Satellite; Hinkcley; Blue Jay; Meteor; Hecla; Little Satellite; Copper Hill; Penn Chemical Works; Campo Seco) ⓘ Slag dumps	[Fayalite] Parsons +3 other references
Carmen City ⓘ Kellogg Mine (Kellogg property; Vanella Mine; Manilla property)	[Tephroite] Hewett et al. (1961) +2 other references
Imperial County Niland ⓘ Obsidian Butte	[Fayalite] Rogers (1935) +3 other references
Inyo County Rose Valley ⓘ Little Lake	[Fayalite] Collection of RJ Martin
Sugarloaf Mountain ⓘ Obsidian Ridge (Little Lake Perlite deposits; Desert Materials Corp. deposit)	[Fayalite] Rogers (1922) +2 other references
ⓘ Unnamed lava flow [1]	[Fayalite] Rutley (1890) +5 other references
Kern County Government Peak ⓘ Big Indian Mine (Big Indian deposit)	[Tephroite] Hewett et al. (1961) +4 other references
Sidney Peak ⓘ Manganese Queen Mine (BHP Mine; B.H.P. Mine)	[Tephroite] Troxel et al. (1962) +2 other references
ⓘ Los Angeles Martian meteorite	[Fayalite] GROSSMAN et al. (2001) +3 other references
Mariposa County West Belt Granite Springs Mining District Granite Springs ⓘ Caldwell Mine (Daly Mine)	[Tephroite] Hewett et al. (1961) +3 other references
Nevada County Spenceville Mining District Higgins Corner ⓘ Smith Mine (Smith prospect)	[Tephroite] Huebner +6 other references
Limekiln ⓘ Manga-Chrome Mine (Manga Chrome; Magna-Chrome Mine; Duggan Mine; Steams and Owens [?])	[Tephroite] Huebner +7 other references
ⓘ Smith prospect	[Tephroite] Flohr et al. (1992)
Riverside County Riverside Mount Rubidoux ⓘ Unnamed Fayalite-Iddingsite occurrence [1]	[Fayalite] Banks (1962) +3 other references
San Diego County Marine Corps Base Camp Pendleton San Onofre Mountain San Onofre Mountain Summit area ⓘ Unnamed Mn occurrence	[Tephroite] its nature and origin: University of ... +2 other references
Santa Clara County Black Wonder Mining District East Foothills ⓘ Mn occurrence ?	[Tephroite] Rogers (1919) +8 other references
Siskiyou County Cougar Butte ⓘ Cougar Butte occurrence (Canyon Butte; Couger Butte)	[Fayalite] Murdoch (1966) +2 other references
ⓘ Unnamed Obsidian occurrence [1]	[Fayalite] Murdoch et al. (1966) +2 other references
Klamath Mountains Liberty Mining District Snowden ⓘ Gray Ledge Mine (Pink Darling Mine; Defense deposit; National Defense claim; Claim No. 1; King claim)	[Tephroite] Hewett et al. (1961) +3 other references
Trinity County Klamath Mountains Upper Hayfork Creek area Red Mountain ⓘ Lucky Bill prospect (Lucky Bill property; Johnston; Old Bill Mine; Old Bill prospect; Old Bill property)	[Tephroite] Hewett et al. (1961) +2 other references
Colorado Douglas County Deckers Area ⓘ Sugarloaf Peak	[Fayalite] Eckel et al. (1997)
ⓘ Devils Head Pegmatite Mining District	[Fayalite] Eckel et al. (1997)
ⓘ Rampart Range	[Fayalite] Eckel et al. (1997)
El Paso County ⓘ Cheyenne Mining District (St. Peters Dome Mining District)	[Fayalite] - (2005)
ⓘ St Peters Dome	[Fayalite] Eckel et al. (1997)
ⓘ Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality)	[Fayalite] - (2005)
ⓘ Cheyenne Mt area	[Fayalite] [AmMin 84:196]
Crystal Park ⓘ Crystal Park area	[Fayalite] Eckel et al. (1997)
ⓘ Mount Rosa	[Fayalite] Eckel et al. (1997) +1 other reference
ⓘ Stove Mountain (Cookstove Mountain)	[Fayalite] Hanson et al. (2013)
ⓘ Fairview	[Fayalite] Eckel et al. (1997)
Jefferson County ⓘ West Creek	[Fayalite] Eckel et al. (1997)
Park County ⓘ Rampart Range	[Fayalite] Eckel et al. (1997)
San Juan County Eureka Mining District Gladstone Bonita Peak ⓘ Sunnyside Mine group	[Tephroite] Burbank (1933) +1 other reference
Teller County ⓘ Cripple Creek Mining District	[Fayalite] Carnein et al. (2005)
Connecticut Middlesex County Haddam ⓘ Jail Hill Road locality (Jail Hill Quarry)	[Tephroite] Januzzi +2 other references
Georgia ⓘ Barrow County	[Fayalite] Cook (1978)
Statham ⓘ Arnold Mine (L.M. Arnold and E.R. Arnold properties)	[Fayalite] Rocks & Min.:64:185 +1 other reference
Hawaii Honolulu County Oahu Island ⓘ Salt Lake Crater	[Fayalite] Goto et al. (1988)
Maui County Maui Island ⓘ Puu Koae	[Fayalite] Velde (1978)
Idaho ⓘ Sawtooth Batholith	[Fayalite] Rocks & Min. 70:246 +3 other references
Indiana Tippecanoe County Lafayette ⓘ Lafayette (stone) Martian meteorite	[Fayalite] Berkley et al. (1980)
Kansas Decatur County ⓘ Leoville meteorite (Leoville CV3 chondrite)	[Fayalite] Brearley et al. (1998)
Lyon County ⓘ Elm Creek meteorite	[Fayalite] New York +4 other references
Maine Hancock County ⓘ Mount Desert	[Fayalite] Wiebe et al. (1997)
Piscataquis County Big Moose Township ⓘ Fayalite locality	[Fayalite] Espenshade
Little Moose Township ⓘ Route 16 roadcut	[Fayalite] Espenshade
York County Newfield Straw Hill occurrence ⓘ Symmes Pond Syenite	[Fayalite] Gilman
Shapleigh Newfield Wildlife Management Area locality ⓘ Abbott Mountain Syenite	[Fayalite] Gilman
ⓘ Wells	[Fayalite] King et al. (1994)
York ⓘ Mount Agamenticus	[Fayalite] King et al. (1994)
ⓘ Mount Agamenticus Alkaline Syenite	[Fayalite] Gilman
Massachusetts Berkshire County Cheshire ⓘ North Mountain Serpentine locality ("Dunite Locality" of Emerson) ?	[Fayalite] "Western Massachusetts Mineral ...
Essex County ⓘ Gloucester	[Fayalite] Gleba (2008)
ⓘ Railcut Hill	[Fayalite] P. Cristofono collection
ⓘ Rockport	[Fayalite] Palache (1950)
ⓘ Rockport Granite Company quarries	[Fayalite]
ⓘ Babson Farm Quarry	[Fayalite] Palache (1950)
Franklin County Hawley West Hawley ⓘ Forge Hill iron mines (Old Hawley iron mines) ?	[Tephroite]
Hampshire County Cummington ⓘ Cummingtonite (of Dewey) type locality	[Tephroite] Anthony (1997)
Plainfield ⓘ Betts Manganese Mines	[Tephroite] Plante (1992)
Michigan Marquette County Republic Township Republic ⓘ Republic Mine	[Fayalite] Heinrich et al. (2004)
Minnesota ⓘ Duluth Complex	[Fayalite] Tutolo et al. (2019)
Saint Louis County Babbitt ⓘ Northshore Mine (Peter Mitchell Mine; Reserve Mine; Babbitt Mine)	[Fayalite] - (2005)
Montana Silver Bow County Butte Mining District (Summit Valley Mining District) ⓘ Butte Reduction Works smelter slag locality	[Fayalite] Kaplan (2016)
Nevada Elko County ⓘ Toano Range	[Fayalite] Castor et al. (2004)
Humboldt County ⓘ McDermitt Caldera Center	[Fayalite] Castor et al. (2004)
Lincoln County ⓘ Kanes Springs Wash	[Fayalite] Castor et al. (2004)
Nye County Mellan Mountain Mining District ⓘ Mellan Hills	[Fayalite] Castor et al. (2004)
Nellis Air Force range ⓘ Belted Range	[Fayalite] Castor et al. (2004)
ⓘ Oasis Valley	[Fayalite] Macdonald et al. (2019)
ⓘ Silent Canyon volcanic center	[Fayalite] Noble et al. (1968)
Pershing County Dry Lake Pershing ⓘ Bluewing 001 meteorite	[Fayalite] www.meteorites4sale.net/MET_B.HTM
New Hampshire Carroll County Jackson ⓘ Jackson Falls	[Fayalite] ...
Coos County Carroll ⓘ Cherry Mountain	[Fayalite]
Stark ⓘ Long Mountain	[var: Knebelite] Meyers et al. (1956)
Grafton County ⓘ Franconia	[Fayalite] Smith (2005)
Rockingham County Nottingham ⓘ Mount Pawtuckaway	[Fayalite] Eby (1984)
New Jersey Sussex County ⓘ Franklin	[Fayalite] Brush (1871) +3 other references
ⓘ Franklin Mine	[Fayalite, Tephroite, Fayalite var: Roepperite (of Brush)] Dana et al. (1892)
ⓘ Buckwheat dump mineral collecting site	[Tephroite] King (n.d.)
ⓘ Buckwheat pit	[Fayalite, Tephroite, Fayalite var: Roepperite (of Brush)] www.fomsnj.org (n.d.)
ⓘ Mill site dump	[Tephroite] FOMS Millsite Committee (1986)
Ogdensburg Sterling Hill ⓘ Passaic pit (Marshall Mine; Passaic Mine)	[Tephroite] Moritz (n.d.)
ⓘ Sterling Mine	[Fayalite, Tephroite, Fayalite var: Roepperite (of Brush)] Burns et al. (1972) +1 other reference
New Mexico ⓘ Otero County	[Fayalite] Northrop et al. (1996)
ⓘ Cornudas Mountains	[Fayalite] Northrop et al. (1996)
ⓘ Wind Mountain	[Fayalite] USGS GEOLOGIC INVESTIGATIONS SERIES ... +1 other reference
ⓘ Sandoval County	[Fayalite] Northrop et al. (1996)
ⓘ Bandelier tuff	[Fayalite] Northrop et al. (1996)
New York Orange County ⓘ Town of Monroe	[Fayalite] NY State Museum spec. no. 15894
Lake Mombasha ⓘ O'Neil Mine	[Fayalite] Robinson et al. (2007)
North Carolina Alleghany County Sparta Bald Knob ⓘ Bald Knob deposit	[Tephroite] Rocks & Min.: 60:130-135.
Jackson County ⓘ Webster-Balsam	[Fayalite] U.S Department Of Commerce +1 other reference
Macon County Cowee Valley ⓘ Ellijay Mining District	[Fayalite] U.S Department Of Commerce +1 other reference
Yancey County Day Book ⓘ Green Mountain Mine	[Fayalite] C.W. Allen collection
Oklahoma Caddo County ⓘ Caddo County meteorite	[Fayalite] - (1993)
Oregon Lane County McKenzie Pass North Sister Mountain ⓘ Obsidian Cliffs	[Fayalite] Olsen et al. (1970) +1 other reference
Pennsylvania York County Frogtown ⓘ Reeser's Summit	[Fayalite] Smith et al. (1972) +1 other reference
Rhode Island Providence County ⓘ Cumberland	[var: Knebelite] Yale Peabody Museum #671
ⓘ Staples Road Manganese bed ?	[Tephroite] Michael W. Kieron collection
Texas Burnet County ⓘ Buchanan dam	[Fayalite] Smith (1991)
Llano County Packsaddle Mountain ⓘ Slag dump	[Fayalite] in the personal collection of Jennifer ...
Mason County ⓘ Kothman tract	[Tephroite] BEG University of Texas publication 4301
Randall County ⓘ Umbarger meteorite	[Fayalite] Zhidong Xie et al. (2005)
Vermont Rutland County Shrewsbury Cuttingsville ⓘ Granite Hill	[Fayalite] Rocks & Min. Vol. 71 (1996)
Windsor County ⓘ Ascutney Mountain complex	[Fayalite] Schneiderman (1991)
Virginia ⓘ Amelia County	[Tephroite] Dietrich (1990)
Floyd County Southern Section-Blue Ridge Province Southern Lead ⓘ Toncrae Mine (Toncrae-Howard Mine; Toncray Mine)	[Tephroite] Dietrich (1990)
Gloucester County ⓘ Sarahs Creek	[Fayalite] Dietrich (1990)
Henrico County ⓘ Sharps meteorite	[Fayalite] Brearley et al. (1998)
Pittsylvania County James River-Roanoke River Mn-Fe-Ba Mining District ⓘ Hutter Mine (Herter Magnetite Mine)	[Fayalite, Tephroite] Beard et al. (2002)
Washington Ferry County Belcher Mining District ⓘ Overlook Mine	[Fayalite] Adamera Minerals
Jefferson County ⓘ Elkhorn Prospect	[Tephroite] Cannon (1975)
Mason County North Fork of the Skokomish River Area ⓘ Triple Trip Mine	[Tephroite] Cannon (1975)
Okanogan County Golden Horn Batholith ⓘ Washington Pass	[Fayalite] Micro Probe Volume VI Number 8
Wisconsin ⓘ Ashland County	[Fayalite] www.uwrf.edu/~wc01
ⓘ Markle Drive outcrops	[Fayalite] Cordua (1998)
Marathon County Wausau Intrusive Complex ⓘ "Rotten granite" quarries	[Fayalite] Cordua (1998)
Stettin pluton ⓘ County road U road cut	[Fayalite] Cordua (1998)
Wyoming Albany County Iron Mountain Mining District ⓘ Sybille pit (Sybille quarry)	[Fayalite] Frost et al. (eds.)
Goshen County ⓘ Goshen Hole Rim	[Fayalite] Izett et al. (1968)
Teton County Moran ⓘ Glade Creek	[Fayalite] Iddings et al. (1892)
ⓘ Yellowstone National Park	[Fayalite] Handbook of Mineralogy (http://www.handbookofmineralogy.org/pdfs/fayalite.pdf)
Western Sahara
al-Saqiyah al-Hamra'a (Saguia el Hamra) Dchira ⓘ Northwest Africa 773 Lunar meteorite (NWA 773)	[Fayalite] Meteoritical Society Abstracts (2001)
Yemen
Aden Governorate ⓘ Aden Volcano	[Fayalite] Cox et al. (1969) +2 other references
ⓘ Little Aden Peninsula	[Fayalite] Manasse (1908) +3 other references
The Moon
Fra Mauro Highlands ⓘ Fra Mauro Base (Apollo 14 landing site)	[Fayalite] El Goresy et al. (1971)
Mare Crisium ⓘ Luna 24 landing site	[Fayalite] Pavel M. Kartashov analytical data (2013)
ⓘ Mare Tranquillitatis (Sea of Tranquility)	[Fayalite] Geochemica et Cosmochimica Acta: 34 (1)
ⓘ Tranquillity Base (Apollo 11 landing site)	[Fayalite] Vol.2: Chemical Isotope Analyses +2 other references
Oceanus Procellarum (Ocean of Storms) ⓘ Chang'e 5	[Fayalite] Jin et al. (2025)
ⓘ Statio Tianchuan	[Fayalite] Yang et al. (2024)