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Fayalite

A valid IMA mineral species - grandfathered

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Photos of Fayalite (213)Discuss Fayalite View 'Best Of' Article

Fayalite Gallery Search Photos of Fayalite

Edit Fayalite Add Synonym Edit CIF structures Clear Cache

Fayalite

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

Fayalite

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

Fayalite

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

Fayalite

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

Fayalite

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

Fayalite

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

Fayalite

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

Fayalite

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

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About FayaliteHide

Hypsometric map

Faial, Azores, Portugal

Formula:

Fe²⁺₂(SiO₄)

Colour:

Greenish-yellow, yellow or brown

Lustre:

Vitreous, Greasy

Hardness:

Specific Gravity:

4.39

Crystal System:

Orthorhombic

Member of:

Olivine Group

Name:

Named by Christian Gottlieb Gmelin in 1840 for the type locality, Faial Island (Fayal Island), Azores District (Azores Islands), Portugal.

Type Locality:

ⓘ Faial, Azores, Portugal

Polymorph of:

Ahrensite, Asimowite

Isostructural with:

Calcio-olivine, Forsterite, Glaucochroite, Kirschsteinite, Laihunite, Monticellite, Tephroite

Olivine Group. Fayalite-Forsterite Series, and the Fayalite-Tephroite Series. The Fe²⁺ analogue of Forsterite, Tephroite, and Calcio-Olivine.

Uncommon in nature, but common in man-made (metallurgy) iron slags.
See also laihunite.

Visit gemdat.org for gemological information about Fayalite.

Unique IdentifiersHide

Mindat ID:

1458

Long-form identifier:

mindat:1:1:1458:4

IMA Classification of FayaliteHide

IMA status:

Approved, 'Grandfathered' (first described prior to 1959)

IMA Formula:

Fe²⁺₂SiO₄

Classification of FayaliteHide

Strunz-mindat (2026):

9.AC.05

9 : SILICATES (Germanates)
A : Nesosilicates
C : Nesosilicates without additional anions; cations in octahedral [6] coordination

Dana 8th ed.:

51.3.1.1

51 : NESOSILICATES Insular SiO₄ Groups Only
3 : Insular SiO₄ Groups Only with all cations in octahedral [6] coordination

Hey's CIM Ref.:

14.19.1

14 : Silicates not Containing Aluminum
19 : Silicates of Fe

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Symbol	Source	Reference for Standard
Fa	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Fa	Kretz (1983)	Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279.
Fa	Siivolam & Schmid (2007)	Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download
Fa	Whitney & Evans (2010)	Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371
Fa	The Canadian Mineralogist (2019)	The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Physical Properties of FayaliteHide

Lustre:

Vitreous, Greasy

Transparency:

Transparent, Translucent

Colour:

Greenish-yellow, yellow or brown

Streak:

Colourless

Hardness:

7 on Mohs scale

Density:

4.39 g/cm³ (Measured)

Comment:

measured on synthetic material

Optical Data of FayaliteHide

Type:

Biaxial (-)

RI values:

n_α = 1.731 - 1.824 n_β = 1.76 - 1.864 n_γ = 1.773 - 1.875

2V:

Measured: 74° to 47°, Calculated: 54° to 66°

Max. Birefringence:

δ = 0.042 - 0.051
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Thickness: 30 µm Order divisions

Rotation:

Surface Relief:

Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).

This shows the grain boundary and Becke line effect under plane-polarised light, based on the contrast between this mineral's average refractive index and the mounting medium. It does not take into account mineral colouration.

Focus:

In focus

Interference Figure:

This shows the idealized biaxial acute bisectrix (Bxa) interference figure - the conoscopic view for a grain cut perpendicular to the acute bisectrix, using this mineral's 2V. The two small white dots mark the melatopes - the points where the two optic axes emerge - and are shown only when they fall within the field of view. The coloured bands are isochromatics, and the dark bands are isogyres.

Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.

Thickness: 30 µm

Stage rotation: 0°

Dispersion:

weak

Pleochroism:

Visible

Comments:

X = pale yellow
Y = orange-yellow, reddish-brown
Z = pale yellow

Chemistry of FayaliteHide

Mindat Formula:

Fe²⁺₂(SiO₄)

Element Weights:

Element	% weight
Fe	54.811 %
O	31.406 %
Si	13.783 %

Calculated from ideal end-member formula.

Elements listed:

Fe, O, Si - search for minerals with similar chemistry

Common Impurities:

Mn,Mg

Crystallography of FayaliteHide

Crystal System:

Orthorhombic

Class (H-M):

mmm(2/m2/m2/m) - Dipyramidal

Cell Parameters:

a = 4.79 Å, b = 10.39 Å, c = 6.06 Å

Ratio:

a:b:c = 0.461 : 1 : 0.583

Unit Cell V:

301.59 Å³ (Calculated from Unit Cell)

Comment:

Space group Pbnm (non-standard setting).

Crystal StructureHide

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

ID	Species	Reference	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
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
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
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 close

data_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

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
5.21 Å	(20)
3.945 Å	(20)
3.762 Å	(10)
3.535 Å	(30)
3.045 Å	(5)
3.027 Å	(10)
2.810 Å	(100)
2.616 Å	(20)
2.599 Å	(10)
2.549 Å	(60)
2.489 Å	(70)
2.400 Å	(5)
2.389 Å	(20)
2.340 Å	(5)
2.297 Å	(20)
2.286 Å	(30)
2.184 Å	(10)
2.062 Å	(5)
1.974 Å	(5)
1.908 Å	(10)
1.834 Å	(5)
1.820 Å	(10)
1.769 Å	(40)
1.761 Å	(10)
1.753 Å	(5)
1.693 Å	(10)
1.665 Å	(20)
1.640 Å	(10)
1.615 Å	(10)
1.595 Å	(10)
1.531 Å	(5)
1.525 Å	(5)
1.515 Å	(20)
1.504 Å	(20)
1.419 Å	(5)
1.414 Å	(5)
1.403 Å	(5)
1.367 Å	(10)
1.333 Å	(10)
1.275 Å	(5)

Comments:

ICDD 31-633 magnesian fayalite; replaces ICDD 7-158, see also ICDD 12-220 manganoan fayalite; ICDD 34-178 fayalite (synthetic)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration	4.566-4.550
6 : Secondary asteroid phases	4.566-4.560
Stage 4a: Earth’s earliest continental crust	>4.4-3.0
19 : Granitic intrusive rocks
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
Stage 4b: Highly evolved igneous rocks	>3.0
34 : Complex granite pegmatites
Stage 5: Initiation of plate tectonics	<3.5-2.5
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)
Stage 10b: Anthropogenic minerals	<10 Ka
57 : Other minerals formed by human processes

Type Occurrence of FayaliteHide

Type Locality:

ⓘ Faial, Azores, Portugal

Synonyms of FayaliteHide

Fe-rich olivine

Iron-Chrysolite

Other Language Names for FayaliteHide

Dutch:Fayaliet

German:Fayalit
Eisenglas
Eisenperidot
Faialit

Italian:Fayalite

Lithuanian:Fajalitas

Polish:Fajalit

Portuguese:Faialite

Russian:Фаялит

Simplified Chinese:铁橄榄石

Spanish:Faialita
Fayalita

Varieties of FayaliteHide

Ferrohortonolite	Variety of fayalite, Olivine group. An intermediate member of the forsterite-fayalite series with Fe/(Fe+Mg) from 70% to 90% .
Roepperite (of Brush)	A manganoan, zincian fayalite. Black slightly rounded to very rounded crystals, also black cleavages.

Relationship of Fayalite to other SpeciesHide

Member of:

Olivine Group

Other Members of Olivine Group:

Calcio-olivine	Ca₂SiO₄	Orth. mmm(2/m2/m2/m)
Forsterite	Mg₂(SiO₄)	Orth. mmm(2/m2/m2/m)
Glaucochroite	CaMn²⁺(SiO₄)	Orth. mmm(2/m2/m2/m)
Hinokageite	MnMg(SiO₄)	Orth. mm2
Kirschsteinite	CaFe²⁺(SiO₄)	Orth. mmm(2/m2/m2/m) : Pnma
Laihunite	(Fe³⁺,Fe²⁺,◻)₂(SiO₄)	Mon. 2/m : P2₁/b
Liebenbergite	Ni₂(SiO₄)	Orth. mmm(2/m2/m2/m)
Monticellite	CaMg(SiO₄)	Orth. mmm(2/m2/m2/m)
Tephroite	Mn²⁺₂(SiO₄)	Orth. mmm(2/m2/m2/m) : Pnma

Forms a series with:

Forsterite	Fayalite-Forsterite Series
Tephroite	Fayalite-Tephroite Series

Common AssociatesHide

Associations Based on Photo Data:

85 photos of Fayalite associated with Tridymite	SiO₂
66 photos of Fayalite associated with Hematite	Fe₂O₃
55 photos of Fayalite associated with Cristobalite	SiO₂
21 photos of Fayalite associated with Quartz	SiO₂
20 photos of Fayalite associated with 'Obsidian'
16 photos of Fayalite associated with Grunerite	◻Fe²⁺₂Fe²⁺₅(Si₈O₂₂)(OH)₂
15 photos of Fayalite associated with Phlogopite	KMg₃(AlSi₃O₁₀)(OH)₂
11 photos of Fayalite associated with Magnetite	Fe²⁺Fe³⁺₂O₄
10 photos of Fayalite associated with Laihunite	(Fe³⁺,Fe²⁺,◻)₂(SiO₄)
10 photos of Fayalite associated with Mica Group

Related Minerals - Strunz-mindat Grouping Hide

9.AC.	Poirierite	Mg₂SiO₄	Orth. mmm(2/m2/m2/m) : Pmma
9.AC.	Ahrensite	SiFe₂O₄	Iso. m3m(4/m32/m)
9.AC.05	Laihunite	(Fe³⁺,Fe²⁺,◻)₂(SiO₄)	Mon. 2/m : P2₁/b
9.AC.05	Forsterite	Mg₂(SiO₄)	Orth. mmm(2/m2/m2/m)
9.AC.05	Tephroite	Mn²⁺₂(SiO₄)	Orth. mmm(2/m2/m2/m) : Pnma
9.AC.05	Hinokageite	MnMg(SiO₄)	Orth. mm2
9.AC.05	Liebenbergite	Ni₂(SiO₄)	Orth. mmm(2/m2/m2/m)
9.AC.05	Kirschsteinite	CaFe²⁺(SiO₄)	Orth. mmm(2/m2/m2/m) : Pnma
9.AC.05	Glaucochroite	CaMn²⁺(SiO₄)	Orth. mmm(2/m2/m2/m)
9.AC.10	Monticellite	CaMg(SiO₄)	Orth. mmm(2/m2/m2/m)
9.AC.15	Brunogeierite	Ge⁴⁺Fe²⁺₂O₄	Iso. m3m(4/m32/m) : Fd3m
9.AC.15	Ringwoodite	(Mg,Fe²⁺)₂SiO₄	Iso. m3m(4/m32/m) : Fd3m
9.AC.20	Chesnokovite	Na₂[SiO₂(OH)₂] · 8H₂O	Orth. mmm(2/m2/m2/m) : Ibca

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Fayalite in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Internet Links for FayaliteHide

mindat.org URL:

https://www.mindat.org/min-1458.html
Please feel free to link to this page.

Search Engines:

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Look for Fayalite images on DuckDuckGo

Look for Fayalite in the Rock H. Currier Digital Library

External Links:

Look for Fayalite on Webmineral

Look for Fayalite on Wikipedia

Look for Fayalite on Mineralien Atlas

Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

Mineral Dealers:

Buy from D. Joyce minerals

References for FayaliteHide

Reference List:

Gmelin, C.G. (1840) Chemische Untersuchung des Fayalites. Annalen der Chemie und Physik: 127(2/051): 160.

von Fellenberg, R.L. (1840) Analyse des Eisenperidots, eines neuen vulkanischen Minerals von den Azoren. Annalen der Physik und Chemie: 127(2/051): 261.

Gorgeu, Alex. (1884) Sur la production artificielle de la Fayalite. Bulletin de Minéralogie, 7 (2) 61-62 doi:10.3406/bulmi.1884.1855

Fisher, G.W., Medaris, L.G. (1969) Cell dimensions and X-ray determinative curve for synthetic Mg-Fe olivines. American Mineralogist: 54: 741-753.

Burns, Roger G., Huggins, Frank E. (1972) Cation determinative curves for Mg-Fe-Mn olivines from vibrational spectra. American Mineralogist, 57 (5-6) 967-985

Smyth, Joseph R. (1975) High temperature crystal chemistry of fayalite. American Mineralogist, 60 (11-12) 1092-1097

Hazen, Robert M. (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine. American Mineralogist, 62 (3-4) 286-295

Schwab, R.G., Küstner, D. (1977) Präzisionsgitterkonstantenbestimmung zur Festlegung röntgenographischer Bestimmungskurven für synthetische Olivine der Mischkristallreihe Forsterit-Fayalit. Neues Jahrbuch für Mineralogie, Monatshefte, 5: 205-215.

Hazen, Robert M. (1977) Effects of temperature and pressure on the crystal structure of ferromagnesian olivine. American Mineralogist, 62 (3-4) 286-295

Riekel, Ch., Weiss, Armin (1978) Cation-Ordering in Synthetic Mg2-xFexSiO4-Olivines. Zeitschrift für Naturforschung B, 33. 731-736 doi:10.1515/znb-1978-0709

Fujino, K., Sasaki, S., Takéuchi, Y., Sadanaga, R. (1981) X-ray determination of electron distributions in forsterite, fayalite and tephroite. Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 37 (3) 513-518 doi:10.1107/s0567740881003506

Suzuki, Isao, Seya, Kiyoshi, Takei, Humihiko, Sumino, Yoshio (1981) Thermal expansion of fayalite, Fe2SiO4. Physics and Chemistry of Minerals, 7 (2) 60-63 doi:10.1007/bf00309452

Mukhopadhyay, Dilip K.; Lindsley, Donald H. (1983) Phase relations in the join kirschsteinite (CaFeSiO₄)-fayalite (Fe₂SiO₄). American Mineralogist, 68 (11-12). 1089-1094

Amthauer, G., Fuess, H., Hafner, S. S., Lottermoser, W. (1984) The magnetic structure of fayalite from ⁵⁷Fe Mössbauer resonance. Acta Crystallographica Section A Foundations of Crystallography, 40 (a1). C259 doi:10.1107/s0108767384092242

Brinkmann, U., Laqua, W. (1985) Decomposition of fayalite (Fe2SiO4) in an oxygen potential gradient at 1,418 K. Physics and Chemistry of Minerals, 12 (5) 283-290 doi:10.1007/bf00310341

O'Neill, Hugh St. C. (1987) Quartz-fayalite-iron and quartz-fayalite-magnetite equilibria and the free energy of formation of fayalite (Fe2SiO4) and magnetite (Fe3O4). American Mineralogist, 72 (1-2). 67-75

Janeczek, J. (1989) Manganoan fayalite and products of its alteration from the Strzegom pegmatites, Poland. Mineralogical Magazine, 53 (371) 315-325 doi:10.1180/minmag.1989.053.371.07

Chopelas, A. (1991) Single crystal Raman spectra of forsterite, fayalite, and monticellite. American Mineralogist, 76 (7-8) 1101-1109

Mackwell, StephenJ. (1992) Oxidation kinetics of fayalite (Fe2SiO4). Physics and Chemistry of Minerals, 19 (4). 220-228 doi:10.1007/bf00202311

Pilati, T., Demartin, F., Gramaccioli, C. M. (1995) Thermal parameters for minerals of the olivine group: their implication on vibrational spectra, thermodynamic functions and transferable force fields. Acta Crystallographica Section B Structural Science, 51 (5) 721-733 doi:10.1107/s0108768194014382

Lottermoser, W., Forcher, K., Amthauer, G., Fuess, H. (1995) Powder- and single crystal Mössbauer spectroscopy on synthetic fayalite. Physics and Chemistry of Minerals, 22 (4). 259-267 doi:10.1007/bf00202259

Lottermoser, W., Forcher, K., Amthauer, G., Treutmann, W., Hosoya, S. (1996) Single crystal Mössbauer spectroscopy on the three principal sections of a synthetic fayalite sample in the antiferromagnetic state. Physics and Chemistry of Minerals, 23 (7). 432-438 doi:10.1007/bf00202029

Niemeier, D.; Chakraborty, S.; Becker, K.D. (1996) A high-temperature Mössbauer study of the directional geometry of diffusion in fayalite, Fe2SiO4. Physics and Chemistry of Minerals, 23 (4). 284 doi:10.1007/bf00207769

Redfern, S. A. T., Knight, K. S., Henderson, C. M. B., Wood, B. J. (1998) Fe-Mn cation ordering in fayalite–tephroite (Fe_xMn_1−x)₂SiO₄ olivines: a neutron diffraction study. Mineralogical Magazine, 62 (5) 607-615 doi:10.1180/002646198548007

(2001) Fayalite. Handbook of Mineralogy. Mineralogical Society of America

Ullrich, Kerstin, Becker, Klaus Dieter (2001) Kinetics and diffusion of defects in fayalite, Fe2SiO4. Solid State Ionics, 141. 307-312 doi:10.1016/s0167-2738(01)00796-2

Kolesov, B. A.; Geiger, C. A. (2004) A Raman spectroscopic study of Fe-Mg olivines. Physics and Chemistry of Minerals, 31 (3). 142-154 doi:10.1007/s00269-003-0370-y

Kolesov, B. A., Geiger, C. A. (2004) A temperature-dependent single-crystal Raman spectroscopic study of fayalite: evidence for phonon-magnetic excitation coupling. Physics and Chemistry of Minerals, 31 (3) 155-161 doi:10.1007/s00269-003-0369-4

Kuebler, Karla E., Jolliff, Bradley L., Wang, Alian, Haskin, Larry A. (2006) Extracting olivine (Fo–Fa) compositions from Raman spectral peak positions. Geochimica et Cosmochimica Acta, 70 (24) 6201-6222 doi:10.1016/j.gca.2006.07.035

Zhang, Jin S., Hu, Yi, Shelton, Hannah, Kung, Jennifer, Dera, Przemyslaw (2017) Single-crystal X-ray diffraction study of Fe2SiO4 fayalite up to 31 GPa. Physics and Chemistry of Minerals, 44 (3) 171-179 doi:10.1007/s00269-016-0846-1

Localities for FayaliteHide

Showing 610 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.

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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	Merkel et al. (2013)

Africa
Sahara Desert ⓘ Sahara 99555 meteorite	Floss et al. (2003)

Algeria
Djanet Province Djanet District ⓘ Gour Oumelalen	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	Meteoritical Bulletin et al. (1992)
Lakhbi ⓘ Northwest Africa 2046 Martian meteorite	- (2004, July)
Tamanrasset Province (Tamanghasset Province) ⓘ Atakor Volcanic Field	apports des donnees radiometriques (K/Ar) +6 other references
Tamanrasset District ⓘ Adriane volcano	M. Girod
ⓘ Akar-Akar volcano	M. Girod
ⓘ Tidjenouine	Bendaoud et al. (2003)
Tindouf Province Tindouf District ⓘ Northwest Africa 2268 meteorite (NWA 2268)	Seddiki et al. (2013)

Angola
Benguela Province Balombo ⓘ Balombo occurrence	Andrade (note preliminaire) +2 other references
ⓘ Chanja occurrence	Andrade (note preliminaire) +2 other references
Cuanza Sul Province ⓘ Chamaco Occurrence	Andrade (note preliminaire) +1 other reference
Huambo Province Jolomba ⓘ Jolomba meteorite	Sighinolfi et al. (1990)

Antarctica

East Antarctica Buckley Island quadrangle Lewis Cliff ⓘ Lewis Cliff 86018 meteorite	Hartmetz et al. (1990)
Miller Range ⓘ Miller Range 03346 Martian meteorite	Anand et al. (2005) +2 other references
ⓘ Miller Range 090030 Martian meteorite	Corrigan et al. (2011)
ⓘ Miller Range 090032 meteorite	Corrigan et al. (2011)
ⓘ Miller Range 090136 meteorite	Corrigan et al. (2011)
Pecora Escarpment LaPaz Ice Field ⓘ LaPaz Icefield 02205 Lunar meteorite	aaa.wustl.edu (2005)
Queen Maud Land Mühlig-Hofmann Mountains ⓘ Stålstuten	Bucher et al. (2005)
Queen Fabiola Mountains ⓘ Yamato 000593 Martian meteorite	curator.jsc.nasa.gov (2013)
ⓘ Yamato 81020 meteorite	Krot et al. (2013)
ⓘ Sistefjell	Harris et al. (2002)
Sør Rondane Mountains ⓘ Asuka 881371 meteorite	Mikouchi et al. (1996)
ⓘ Asuka 881757 Lunar meteorite	Ohtani et al. (2011)
ⓘ Widerøefjellet Mountain	Sönmez et al. (2025)
Victoria Land Allan Hills ⓘ Allan Hills A77105 meteorite	Fujimaki Hirokazu (1981)
ⓘ Greene Complex	Proceedings of the VII International ... +1 other reference
ⓘ Malta Plateau	Müller et al. (1991)
ⓘ Mount Overlord	Gair (1967) +1 other reference
ⓘ Mount Rittmann	Armienti et al. (1991)
ⓘ Mt Melbourne	Wörner G and Viereck L (Victoria Land, Antarctica) +1 other reference
Queen Alexandra Range ⓘ Queen Alexandra Range 94201 Martian meteorite	Aramovich et al. (2001)
West Antarctica Marie Byrd Land Executive Committee Range ⓘ Mount Sidley	Woolley (2019)
Flood Range ⓘ Mount Berlin	LeMasurier (1990)
ⓘ Mount Moulton	Adie (Ed.)

Argentina
Buenos Aires Province Coronel Suaréz D'Orbigny ⓘ D'Orbigny meteorite	Hwang et al. (2016)

Australia
New South Wales Auckland Co. Egan Peaks Nature Reserve ⓘ Jingera Complex	Eggleton +3 other references
Bland Co. ⓘ Narraburra Granite	Wormald et al. (1988)
Dampier Co. Dromedary Complex ⓘ Little Dromedary Intrusion	Brown (1930) +1 other reference
Gordon Co. Toongi ⓘ Dubbo Zirconia Project	Morris et al. (2014)
Rous Co. ⓘ Mount Warning	Johnson (1989)
Yancowinna Co. Broken Hill district ⓘ Broken Hill	Worner et al. (1982)
Queensland Central Highlands Region Capella ⓘ Peak Range Volcanic Province	Wellman (1978) +3 other references
Cloncurry Shire Selwyn District ⓘ Pegmont Pb-Zn deposit (Pegmont Mine)	Vaughan (1986) +2 other references
Hinchinbrook Shire Ingham District Hinchinbrook Island ⓘ Mount Bowen
McKinlay Shire McKinlay ⓘ Cannington Mine	Walters et al. (1998) +1 other reference
Scenic Rim Region ⓘ Mount Gillies	[var: Ferrohortonolite] ROSS et al. (1987)
Sunshine Coast Region ⓘ Glasshouse Mountains Province	Stevens +3 other references
Tablelands Region Mount Garnet ⓘ Mount Garnet Mine	Wang et al. (2024)
Tasmania Dorset municipality Tomahawk ⓘ Tomahawk river phonolite dyke	Everard et al. (2004)
Kingborough municipality Snug ⓘ Red Hill	McDougall (1961)
West Coast municipality ⓘ Trial Harbour district	Bottrill et al. (2008)
Zeehan mining district Zeehan mineral field Tasmanian Smelting Company site ⓘ South Slag dump	Parbhakar-Fox et al. (2019)
Victoria City of Ballarat ⓘ Alfredton	Sorrell (n.d.)
City of Greater Geelong Anakie ⓘ Mount Anakie	Museum Victoria Mineralogy Collection
ⓘ Eastern Hill	Museum Victoria Mineralogy Collection
Macedon Ranges Shire ⓘ Woodend Province	Edwards (1938) +6 other references
Western Australia Wongan-Ballidu Shire Wongan Hills ⓘ Ninan prospect	Ferguson (1999)

Austria
Burgenland Oberpullendorf District Markt Sankt Martin Pauliberg ⓘ Basalt quarry	Kolitsch et al. (2019)
Carinthia Sankt Veit an der Glan District Guttaring Waitschach ⓘ Slag localities	Kolitsch et al. (2013)
Hüttenberg Sankt Martin am Silberberg ⓘ Slag localities	Kolitsch (2016)
Salzburg St. Johann im Pongau District Mühlbach am Hochkönig Troiboden ⓘ Wilder See slag locality	Viertler (2009)
ⓘ Windrandegg slag locality	Viertler (2009)
Zell am See District Kaprun ⓘ Lechnerberg slag locality	Kolitsch et al. (2009) +1 other reference
Rauris Alteck - Hoher Sonnblick area Kolm-Saigurn ⓘ Slag localities	Strasser (1989)
ⓘ Astenschmiede slag locality	Niedermayr et al. (2009)
Styria Liezen District Öblarn Walchen ⓘ Slag dumps	Schebesta (1992)
Südoststeiermark District Bad Gleichenberg Klausen ⓘ Schlarbaum quarry	Aufschluss 1972 (SB)
Wilhelmsdorf ⓘ Stradner Kogel	Postl et al. (2011)
Klöch ⓘ Basalt quarry	"Aus der Tiefe der Vulkane" (2011)
Upper Austria Steyr-Land District Garsten ⓘ Slag locality	Neschen (n.d.)
Steyr Slag localities ⓘ Farm Meier	Neschen (n.d.)
ⓘ Porscheberg	Neschen (n.d.)
Vorarlberg Bludenz District Silbertal ⓘ Schmelzhof slag locality	Bechter (2009)
ⓘ Untere Dürrwaldalpe slag locality	Krause et al. (2025)

Brazil
Amapá Pedra Branca do Amapari ⓘ Tucano mine	Soares et al. (2025)
Bahia Itarantim ⓘ Serra Rancho Queimado	Conceicao et al. (2009)
Minas Gerais Governador Valadares ⓘ Governador Valadares meteorite	Berkley et al. (1980)
Martinho Campos Ibitira ⓘ Ibitira meteorite	Steele et al. (1976)
Pará Marabá ⓘ Salobo Mine	Vale SA
Pernambuco Vicência Borracha ⓘ Vicência meteorite	Keil (2015)
Santa Catarina ⓘ Corupá pluton	Vlach (2012)
São Francisco do Sul Morro do Rócio ⓘ Santa Catharina meteorite	Buchwald (1975)
São Paulo Ilhabela São Sebastião island ⓘ São Sebastião pluton	33rd International Geological Congress (2008)

Cameroon
Adamawa Region Mayo-Banyo Tikar plain ⓘ Pandé massif	Njonfang et al. (2000)
Littoral Region ⓘ Nlonako Intrusion	Cantagrel et al. (1978) +1 other reference
Northwest Region ⓘ Oku Massif	Marzoli et al. (Africa) +8 other references
Southwest Region ⓘ Manengouba stratovolcano	Jérémine (1941) +6 other references
ⓘ Rumpi Hills	Jérémine (1943) +2 other references

Canada
New Brunswick Queens Co. ⓘ Welsford Anorogenic Igneous Complex	Martin et al. (1988)
Newfoundland and Labrador Labrador ⓘ Flowers River complex	Ducharme (2020)
ⓘ Nain Complex	Waard
Newfoundland Baie Verte Peninsula Tilt Cove ⓘ Tilt Cove Slag Locality	Norman Wilson personal collection
Nunavut Kitikmeot Region ⓘ Arcedeckne Island	Can. Mineral. (1993) +1 other reference
Ontario Greater Sudbury McKim Township ⓘ Sudbury area	Schindler et al. (2012)
Nipissing District Calvin Township ⓘ Hayes property (Eau Claire)	Heinrich (1962)
Sudbury District Unorganized North Sudbury District Nemegos area ⓘ Nemegos carbonatite	Berger et al. (2009)
Québec Estrie Bromont ⓘ Mont Brome	WOUSSEN et al. (1972)
Le Granit RCM Val-Racine ⓘ Mont Mégantic	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)	Schilling et al. (2011)
Nord-du-Québec Jamésie Baie-James Certac mine ⓘ Certac kimberlite	Van Rythoven et al. (2020)
Nunavik ⓘ Misery Lake alkaline complex	Petrella (2013)
Outaouais Gatineau TE Gatineau Park ⓘ Forsyth Mine ?	John Weber (1926-2015)

Cape Verde
Sotavento Islands Fogo Island ⓘ Mount Fogo	Silva et al. (2019)

Central African Republic
Nana-Mambéré Lobaye River (Bali River) ⓘ Bali meteorite	Hoinkes et al. (1975)

Chad
Tibesti Region ⓘ Tibesti Volcanic Province	Vincent (Sahara du Tchad) +4 other references

Chile
Magallanes Última Esperanza Province ⓘ Cerro Balmaceda	Woolley (1987)
Valparaíso Ísla de Pascua Province ⓘ Easter Island	Bailey et al. (1970) +4 other references

China
Anhui Anqing Qianshan City ⓘ Maowu complex	Zhang et al. (1999)
Fujian Fuzhou Yongtai County ⓘ Yunshan	Hong et al. (2013)
Gansu Jinchang Jinchuan District ⓘ Jinchuan Ni-Cu-PGE deposit (Baijiajuzi Ni-Cu-PGE deposit)	Porter (Mike)
Hebei Qinhuangdao Shanhaiguan District ⓘ Houshihushan	Yang et al. (2007) +1 other reference
Inner Mongolia Baotou City Bayan Obo mining district ⓘ Bayan Obo deposit	Qing-chang (1981)
Jilin Baishan Fusong County ⓘ Changbai (Paektu Mountain)	Ogura (1969) +5 other references
Sichuan Panzhihua Miyi County ⓘ Baima V-Ti-Fe deposit	Zhong et al. (2007) +4 other references
Xinjiang Bayin'gholin Autonomous Prefecture Qiemo Co. (Qerqen Co.; Cherchen Co.) ⓘ Pakepake 005 meteorite	Meteorlogical Bulletin
Ruoqiang Co. (Qakilik Co.; Chaqiliq Co.) Tashidaban Li district ⓘ Kumusayi Li deposit	Zhang et al. (2026)

Czech Republic
Central Bohemian Region Kutná Hora District Kutná Hora Vrchlice river valley ⓘ Slag locality	Pauliš P. Mineralogické lokality ...
Karlovy Vary Region Cheb District Ovesné Kladruby ⓘ Podhorní hill (Podhora)	Jirasek et al. (2026)
Moravian-Silesian Region Ostrava-City District Ostrava Heřmanice ⓘ Heřmanice dump	Matýsek et al. (2022)
Olomouc Region Olomouc District Těšetice ⓘ Tieschitz meteorite	Brearley et al. (1998)
Pardubice Region Pardubice District ⓘ Chvaletice	Prachař +6 other references
Prague ⓘ Na Slupi site	Ettler et al. (2015)
Ústí nad Labem Region Teplice District ⓘ Hostomice	Žáček V
Vysočina Region Žďár nad Sázavou District Kuklík ⓘ Skarn body	Malec et al. (2013)
ⓘ Líšná	Malec et al. (2013)

Djibouti
Tadjourah Region ⓘ North Tadjoura Complex	Richard +3 other references

DR Congo
North Kivu Beni Territory Bashu ⓘ Bingo carbonatite	USGS Open-File Report 02–156–A +2 other references
Rutshuru Territory Bwito ⓘ Lueshe Mine	Berger et al. (2009)
South Kivu Kabare Territory ⓘ Biega Complex	N.. Boutakoff. (1956) +3 other references
ⓘ Bukavu Volcanic Field	Kanika et al. (1981) +3 other references
Kalehe Territory ⓘ Kambusi Complex	Rumvegeri et al. (1985)

Egypt
Aswan Governorate ⓘ Bir Um Hibal Complex	Hashad et al. (1979) +1 other reference
Beheira Governorate Abu Hommos Nakhla ⓘ Nakhla Martian meteorite	Berkley et al. (1980) +2 other references
Red Sea Governorate ⓘ Nuweibi Complex	Alekseev et al. (2023)

Eritrea
Northern Red Sea Region Alid volcanic center ⓘ Granophyre outcrops	Journal of Petrology

Estonia
Saare County Kaali ⓘ Kaali (Kaalijärv) meteorite crater group	Marini et al. (2004)

Ethiopia
Afar Region Awsi Rasu ⓘ Moussa Alli Stratovolcano	Fino. M.De et al. (Ethiopia and T.F.A.I.) +1 other reference
Fanti Rasu ⓘ Boina Volcanic Region	Barberi et al. (1972) +3 other references
ⓘ Limmo Granite Intruson	Black et al. (1972)
Kilbet Rasu ⓘ Ma'Alalta Volcano	Tazieff et al. (decembre 67-fevrier 68) +4 other references
Oromia Region East Shewa Zone Corbetti Volcanic Complex ⓘ Chabbi Volcano	Mohr (1966) +2 other references
ⓘ Urji Volcano	Mohr (1966) +2 other references
ⓘ Fantale stratovolcano	Gibson +6 other references
ⓘ Koni Volcanic Centre	Mohr (1962) +1 other reference
Metehara ⓘ Fant'Ale volcano	Varet (1970)

Finland
Lapland Sodankylä Viiankiaapa mire area ⓘ Sakattilampi (Sakatti deposit)	Fröhlich et al. (2021)
North Savo Rautalampi ⓘ Kiviniemi	Ahven (2012) +2 other references
Päijänne Tavastia Orimattila ⓘ Artjärvi	Lemanski (n.d.)
Satakunta ⓘ Eurajoki	Haapala et al. (2000)
ⓘ Tarkki	Lemanski (n.d.)
South Karelia Lappeenranta ⓘ Ihalainen limestone quarry	Hytönen (1999)
South Ostrobothnia Kauhajoki ⓘ Kauhajärvi	Kärkkäinen et al. (1999)
Seinäjoki-Lapua ⓘ Vittinki Mn-Fe formation	Mancini et al. (2000)

France
Auvergne-Rhône-Alpes Haute-Loire Le Puy-en-Velay Espaly-Saint-Marcel ⓘ Mont Denise
Landos ⓘ Charbonnier ?	Lemanski (n.d.)
Puy-de-Dôme Issoire Chastreix ⓘ ~~Roc de Courlande~~	Designolle (1996)
Corsica Corse-du-Sud Ajaccio Cristinacce ⓘ Evisa-Calasima Complex	l'exemple de l'association du Vieux Pont d'Ota. Bulletin de la Société Géologique de France (4) +5 other references
ⓘ Évisa	Erwin Löffler collection
Tolla ⓘ Cauro-Bastelica Complex	Bonin et al. (1972) +3 other references
French Polynesia Society Islands Leeward Islands ⓘ Huahine Island	LEGENDRE et al. (2003)
Tuamotu-Gambier (Tuamotu and Gambier Islands) Tuamotu Archipelago (Tuamotus) Mururoa ⓘ "Requin 3" drill hole	Wagner et al. (1988)
French Southern and Antarctic Lands ⓘ Kerguelen Islands	Nougier (1972) +21 other references
Occitanie Aveyron Rodez Sévérac-d'Aveyron ⓘ Lapanouse-de-Sévérac slag locality ?	publication date: November 2018 +1 other reference
Hérault Lodève ⓘ Cabrières	Ambert et al. (2014)
Lozère Florac Vialas ⓘ Vialas smelter slag locality	Lheur et al. (1998)
Provence-Alpes-Côte d'Azur Var Brignoles Les Mayons ⓘ Rascas - Valpayette Mines	Mari et al. (1979)
Toulon Collobrières ⓘ Vaubarnier mine	Mari et al. (1979)
Réunion Saint-Leu ⓘ Grande Ravine	André MELLE collection - Georges ...

Germany
Baden-Württemberg Freiburg Region Emmendingen Sasbach am Kaiserstuhl ⓘ Limberg Quarries	Betz (2012)
Bavaria Upper Palatinate Neustadt an der Waldnaab District Pleystein ⓘ Unnamed placers	Dill (2008)
Lower Saxony Goslar District Bad Harzburg Radau valley ⓘ Gabbro Quarry
Schmalenberg cliff ⓘ Riekensglück prospect
Harz (Landkreis Goslar) ⓘ Spitzenberg Mines
Langelsheim Lautenthal ⓘ Lautenthal smelter slag locality	Luetcke (n.d.)
North Rhine-Westphalia Arnsberg Hochsauerlandkreis Arnsberg Hüsten ⓘ "An der Seilbahn" slag locality	Pawlowski (1991)
Märkischer Kreis Iserlohn Letmathe Helmke quarry nature reserve ⓘ Genna zinc smelter slag locality	Schnorrer-Köhler (1986) +1 other reference
Siegen-Wittgenstein Kreuztal Ferndorf ⓘ Ferndorfer Kupferhütte slag locality (Zitzenbach valley slag locality)	Neschen (n.d.)
Rhineland-Palatinate Ahrweiler Brohltal Burgbrohl ⓘ Herchenberg quarry	Hentschel (1983)
Spessart Hannebach ⓘ Hannebacher Ley	Hentschel (1987)
Altenkirchen Daaden-Herdorf Schutzbach ⓘ Grüneau Mine (Grüne Au Mine; Grünau Mine)	Schnorrer et al. (1997) +1 other reference
Mayen-Koblenz Maifeld Ochtendung ⓘ Wannenköpfe Quarry	Rondorf et al. (1988)
Mayen ⓘ In der Ahl Quarry	Hentschel (1983)
Pellenz Kruft ⓘ Tönchesberg	Blaß et al. (2015) +1 other reference
Nickenich ⓘ Nickenicher Sattel	Hentschel (1983)
ⓘ Nickenicher Weinberg	Hentschel (1983)
Vordereifel Ettringen ⓘ Caspar quarry	Hentschel (1983)
Vulkaneifel Daun Strohn ⓘ Wartgesberg	Hentschel (1983)
Üdersdorf ⓘ Emmelberg	Hentschel (1983)
Gerolstein Gerolstein Roth ⓘ Rother Kopf	Blaß et al. (2012)
Walsdorf ⓘ Goßberg	Hohn et al. (2015)
Kelberg Drees ⓘ Niveligsberg	Schüller (1990)
Saarland Sankt Wendel Nonnweiler Kastel ⓘ Slag occurrence	Thomas Kleser Collection
Saxony-Anhalt Mansfeld-Südharz Mansfeld ⓘ Gottesbelohnung smelter	Neschen (n.d.) +1 other reference
ⓘ Lichtloch 26	Gerhard Möhn Collection Analyzed by ...
Saxony Görlitz District Königshain ⓘ Jenichen Quarry (Jehnichen Quarry; Jähnichen Quarry)	Witzke et al. (2012)
Mittelsachsen Freiberg Halsbach ⓘ Thurmhof smelter slag locality	Andreas Gerstenberg colelction
Schleswig-Holstein Nordfriesland Joldelund ⓘ Kammberg slag locality	Wittern (2001)
Thuringia Schmalkalden-Meiningen District Dolmar-Salzbrücke Kühndorf ⓘ Großer Dolmar	Schüller (1953)

Greece
Attica East Attica Lavreotiki Sounion ⓘ Sounion Cove slag locality	Collection of RJ Martin inferred from ...

Greenland
Kujalleq ⓘ Igaliku Complex	Petersen (1995)
ⓘ Motzfeldt Centre	Jones (1980)
ⓘ North Qôroq Centre	Coulson (2003)
ⓘ Ilímaussaq complex	[var: Ferrohortonolite] Petersen et al. (1993) +1 other reference
Nunarsuit Island ⓘ Nunarssuit complex	Hodson (1998)
Qaqortoq ⓘ Klokken complex	Parsons et al. (1981)
Qeqertalik Disko Island ⓘ Kitdlît	ULFF-MØLLER (1985)
Sermersooq Arsuk Fjord ⓘ Kûngnât complex	Hodson et al. (1997)
Kangerlussuaq Fjord ⓘ Skaergaard intrusion	Mineralogical Magazine et al. (4)
ⓘ Kap Edvard Holm Complex	Woolley (1987)
Kialineq Bay ⓘ Kialineq complex	www.koeln.netsurf.de (1999)

Hungary
Fejér County Gárdony District Sukoró ⓘ Rigó Hill	Sándor et al. (2005)
Hajdú-Bihar County Kaba ⓘ Kaba meteorite	Brearley et al. (1998) +2 other references

Iceland
Southern Region Hornafjörður ⓘ Austurhorn Intrusion	Blake (1966) +1 other reference
ⓘ Vesterhorn Complex	Roobol (1974) +1 other reference
Rangárþing eystra ⓘ Thorsmörk extrusive occurrence	Jørgensen (1980) +1 other reference
Vatnajökull Glacier ⓘ Grímsvötn	Ágústsdóttir et al. (1994)
Western Region Eyja- og Miklaholtshreppur ⓘ Ljósufjöll volcano	Martin et al. (2007) +1 other reference

India
Andhra Pradesh Prakasam District ⓘ Errakonda Pluton	Krishna Reddy et al. (1998)
ⓘ Settupalle pluton	Madhavan et al. (1981) +11 other references
Bihar Gaya District ⓘ Shergotty Martian meteorite	Treiman (1985)
Gujarat Chhota Udaipur District Kavant Taluka ⓘ Siriwasan-Dughda	Sukheswala et al. (1975) +2 other references
Karnataka ⓘ Uttara Kannada District	Nayak et al. (2024)
Madhya Pradesh Jabalpur Division Chhindwara District ⓘ Semarkona meteorite	E.R.D. Scott et al. (1988)
Uttar Pradesh Mau District ⓘ Chainpur meteorite	Krot (2006)
Mirzapur Division Bhadohi District ⓘ Bishunpur meteorite (Parjabatpur meteorite)	Lauretta et al. (2001) +2 other references

Indonesia
Bangka-Belitung Province Belitung Island (Biliton Island) East Belitung Regency ⓘ Selumar	Econ Geol (1977)
North Maluku Province Halmahera Island ⓘ Wailukum Ni Laterites	Bari et al. (2026)

Iran
Kerman Province Sirjan County Pariz ⓘ Sar Cheshmeh Smelter	Mohamadi Nasab et al. (2022)
West Azerbaijan Province Piranshahr County ⓘ Piranshahr intrusion (Piranshahr massif)	Mazhari et al. (2009)

Ireland
Munster Kerry County Killarney Lough Leane ⓘ Ross Island	Ixer

Italy
Aosta Valley Champdepraz ⓘ La Servaz Desot slag locality	Franco Luca Bonino's collection
Fénis Clavalité Valley ⓘ Misérègne slag locality	Toffolo (2012-13)
Saint-Marcel Servette-Chuc mining complex ⓘ Servette slag heaps	Gordon (2004) +1 other reference
Campania Metropolitan City of Naples Ercolano ⓘ Scala lava flow	Scacchi (1882)
Massa di Somma ⓘ Vallone Molaro	Imma Punzo find & collection
Pollena Trocchia ⓘ Pollena quarries	Domenico Preite Collection
ⓘ Procida Island	Russo (2010)
Torre Annunziata ⓘ Oncino lava flow (Uncino lava flow)	Scacchi (1882)
Torre del Greco ⓘ Camaldoli della Torre	Scacchi (1882) +1 other reference
ⓘ Villa Inglese quarries	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.])	Krot et al. (1995) +1 other reference
Lazio Metropolitan City of Rome Capital Magliano Romano ⓘ Fosso Attici	Liotti L. and Tealdi E. (1983)
Viterbo Province ⓘ Gradoli	Fiori S. and Signoretti E. (2001)
Onano ⓘ Montenero Quarry	Cresta et al. (2002)
Lombardy Varese Province ⓘ Cuasso al Monte	Boscardin et al. (1972) +1 other reference
Cavagnano ⓘ Laghetto Quarry	Giovanni Fraccaro +1 other reference
ⓘ Subalpina Quarry (Mantegazza Quarry; Gebel Quarry; Bianchi Quarry)	- (as a monograph) +2 other references
Cuasso al Piano ⓘ Del Prete Quarry	Biffi P. et al. (2004)
Valganna ⓘ Gerizzo leucogranite pluton	F. Bakos
Piedmont Verbano-Cusio-Ossola Province Baveno Feriolo ⓘ Cirla Quarry (Monte Camoscio Quarry; Camoscio Quarry)	Boriani A. (2003)
Oltrefiume Mount Camoscio ⓘ Locatelli quarry	Grill (1935)
ⓘ Seula mine	Grill (1935) +1 other reference
Omegna Brughiere ⓘ Rio Inferno quarry	Albertini (2000)
Sardinia Sassari Province Calangianus ⓘ Furru e Conca Quarries	Gamboni et al. (1997)
Sant'Antonio di Gallura ⓘ Priatu Quarries	Gamboni et al. (1998)
South Sardinia Province Villacidro ⓘ Canale Serci Mine (Monti Mannu Mine)	Naitza et al. (2015, April)
Sicily Metropolitan City of Catania Biancavilla ⓘ Mt Calvario ?	Di Franco (1942)
Metropolitan City of Messina Eolie Islands (Aeolian Islands) Lipari Vulcano Island ⓘ La Fossa crater	Campostrini et al. (2011)
Trapani Province ⓘ Pantelleria Island	[var: Ferrohortonolite] Washington (1909) +12 other references
ⓘ Cinque Denti caldera wall	Bagiński et al. (2018)
Trentino-Alto Adige/Südtirol South Tyrol Wipptal (Alta Vall'Isarco) Franzensfeste (Fortezza) ⓘ Le Cave (Grasstein)	Exel (1987)
Trento Province Castello Tesino ⓘ Cima D'Asta-Campo Regana	Ferretti et al. (2008)
ⓘ Predazzo	De Michele (1974)
Tuscany Grosseto Province Massa Marittima Valpiana - Castello della Marsiliana area slag sites ⓘ Arialla slag locality	Manasse et al. (2002)
ⓘ Cascata slag locality	Costagliola et al. (2008)
ⓘ Forra slag locality	Costagliola et al. (2008)
ⓘ Marsiliana slag locality	Manasse et al. (2002) +1 other reference
Scarlino ⓘ Poggetti Butelli slag locality	Costagliola et al. (2008)
Livorno Province Campiglia Marittima Madonna di Fucinaia (Madonna della Fucinaia) slag heaps ⓘ Capattoli Valley slag locality	Manasse et al. (2001)
ⓘ Rocca San Silvestro slag locality	Mascaro et al. (1995)
Piombino ⓘ Baratti slag locality	Franzini et al. (1992) +3 other references

Japan
Aichi Prefecture Shinshiro city ⓘ Shidara Volcanic field	Kuno (1960) +3 other references
Fukushima Prefecture Date District Kawamata Iizaka Village (Iisaka) ⓘ Suishoyama pegmatite (Suishouyama; Suisyoyama; Suishyoyama)	Excalibur Mineral Company specimen +1 other reference
Gifu Prefecture Nakatsugawa City ⓘ Hirukawa	SUENO et al. (2002)
ⓘ Tawara (Tahara)	Yamada (2004)
Hiroshima Prefecture Hiroshima City ⓘ Setagawa	Petrov (n.d.)
Iwate Prefecture Kamaishi City ⓘ Hakozaki mine	- (n.d.)
Kagoshima Prefecture Kagoshima District Mishima village ⓘ Satsuma-Ioujima (Satsuma-Iwojima; Iou island)	Dr. Yasuko Okuyama-Kusunose analysis +1 other reference
Kirishima City Hayato ⓘ Shimizu	Alfredo Petrov observations on ...
ⓘ Sakkabira	Miyashiro (1956)
Okayama Prefecture ⓘ Abandoned unnamed mine	Sueoka Y (2013)
Shimane Prefecture Oki District Okinoshima Oki Islands ⓘ Dogo Island	Tomita (1936) +5 other references

Kenya
ⓘ Baringo-Laikipia Volcanic Area	Hackmann +3 other references
Baringo County ⓘ Kilombe volcano	RIDOLFI et al. (2006)
ⓘ Korosi Volcano	Hackmann +1 other reference
ⓘ Ribkwo Volcano	Webb +2 other references
Kajiado County ⓘ Mount Suswa (Suswa Volcano)	Johnshon (1969) +7 other references
Meru County Mount Kenya National Park ⓘ Mount Kenya	Gregory (1900) +6 other references
Nakuru County ⓘ Greater Olkaria Volcanic Complex	DAVIES et al. (1987) +4 other references
ⓘ Lake Naivasha	Bowen N L (1935)
ⓘ Longonot Volcano	Scott (1980) +4 other references
ⓘ Naivasha Volcanic Area	Thompson et al. (1963) +2 other references
Samburu County ⓘ Emuruangogolak Volcano	Shotton et al. (1974) +5 other references
Turkana County ⓘ Kafkandal Volcano	Webb +1 other reference
ⓘ Maralal volcanic area	Shackleton (1946) +4 other references
ⓘ Nasaken Volcano	Weaver et al. (1972) +1 other reference
ⓘ Silali Volcano	McCall et al. (1972) +3 other references

Lithuania
Panevėžys County Panevėžys City Municipality ⓘ Jodzie meteorite	Zolensky et al. (1996) +1 other reference

Madagascar
Diana Ambanja District Anorotsangana ⓘ Bezavona Massif	Lacroix (1922) +2 other references
ⓘ Massif d'Ambre	Lacroix (1922) +5 other references

Malawi
Southern Region Mulanje ⓘ Mlanje Massif	pdfs.semanticscholar.org (n.d.) +5 other references
ⓘ Mulanje Massif (Mlange Massif)	Wooley (2001)
Zomba ⓘ Mount Malosa	alkcarb.myrocks.info (n.d.)

Mali
Kidal Region Kidal Cercle ⓘ Kidal-Tibeljeljeline Complex	Black et al. (1979) +2 other references

Mauritania
Dakhlet Nouadhibou Region Nouadhibou ⓘ Galb Inal meteorite	- (2010)

Mexico
Chihuahua Aquiles Serdán Municipality Santa Eulalia Mining District West Camp Francisco Portillo ⓘ Potosí Mine	Panczner (1987)
Pueblito de Allende ⓘ Allende meteorite	Imai H. and Yurimoto H. (2000)
Colima Manzanillo Municipality Revillagigedo Islands ⓘ Socorro Island	doi.org/10.1093/petroj/38.9.1137 +3 other references
Hidalgo ⓘ Sierra de Las Navajas	López-Velarde et al. (2025)

Middle East
ⓘ Hatrurim Formation	Vapnik et al. (2006)

Mongolia
Dornogovi Province Erdene District ⓘ Khamaryn– Khural–Khiid combustion metamorphic complex	Savina et al. (2020) +1 other reference
Khovd Province Myangad District Khaldzan Buragtag massif Mount Ulyn Khuren ⓘ Neprimetnyi pegmatite	Kartashov et al. (2002)
ⓘ Tsakhirin Khuduk Y-Zr-Nb deposit	Kovalenko et al. (2004)
Töv Province Bayan District ⓘ Nyalga combustion metamorphic complexes	Peretyazhko et al. (2017)
Choir-Nyalga basin ⓘ Nyalga Combustion Metamorphic complex	Peretyazhko et al. (2017) +1 other reference
ⓘ Camel	Peretyazhko et al. (2018)
ⓘ Crown	Peretyazhko et al. (2018)

Myanmar
Mandalay Region Pyin-Oo-Lwin District Mogok Township Mogok Valley ⓘ Ohngaing

Namibia
Oshikoto Region Tsumeb ⓘ Tsumeb smelter slag locality	Ettler et al. (2009)
ǁKaras Region Berseba Constituency Berseba Townlands Farm 426 Brukkaros Complex ⓘ Blue Hills Intrusive Complex	Reinhard et al. (2025)

Netherlands
Limburg Kerkrade ⓘ Willem-Sophia mine	De Wit et al. (2003)

New Zealand
Bay of Plenty Region Mayor Island (Tuhua) ⓘ Taratimi Bay (Crater Bay)	Collection of Rod Martin
Rotorua District Mount Ngongotaha ⓘ Hendersons Quarry	Martin Stolworthy Collection
Okataina ⓘ Mount Tarawera	Collection of RJ Martin inferred from ...
Canterbury Region Christchurch City ⓘ Banks Peninsula	Sewell +7 other references
Nelson Region Aniseed Valley Champion Copper Mine ⓘ Champion Copper Mine smelter slag locality	Collection of RJ Martin
Southland Region Southland District Fiordland National Park Preservation Inlet Tarawera Mine ⓘ Smelter	Collection of RJ Martin
Taranaki Region ⓘ Mokoia meteorite	Brearley et al. (1998)
Waikato Region Taupo District ⓘ "K" Trig Quarry	Brown et al. (1994)
Atiamuri ⓘ Ongaroto Road	Personal collection of Rod Martin
Lake Taupo ⓘ 3 Mile Bay	Collection of RJ Martin
ⓘ 4 Mile Bay	Collection of Rod Martin
ⓘ Rangatira Point (Ponui Point)	Collection of RJ Martin +1 other reference
ⓘ Tapuaeharuru Bay	Thornton (Ed.)
ⓘ Western Shore	Collection of Rod Martin
ⓘ Whakaipo Bay	Collection of RJ Martin correlated to ...
ⓘ Wharewaka	Essence of Microscope
Poihipi Road ⓘ Poihipi Rd basalt Quarry	Collection of RJ Martin
ⓘ Scarp Section	Collection of RJ Martin correlated to ...
Thames-Coromandel District Hikuai Broken Hills ⓘ Broken Hills Mine	Collection of RJ Martin correlated to ...
ⓘ Puketui Road mordenite locality	Rod Martin personal collection
Tairua River ⓘ 4th Branch	R. Martin. Tairua Essence of Microscope
ⓘ Tairua River boulder bank	Collection of RJ Martin correlated to ...

Niger
Agadez ⓘ Iskou ring complex	consequences. Bulletin de la Société géologique de France (6) +3 other references
Diffa Maïné-Soroa ⓘ Gamedou occurrence	Garde
Zinder ⓘ Tchouni-Zarniski Complexes	consequences. Bulletin de la Société géologique de France (6) +2 other references

Nigeria
Bauchi Shira ⓘ Shira Complex	Bennett et al. (1984) +1 other reference
Jigawa Birnin Kudu ⓘ Birnin Kudu Complex	Bennett et al. (1984)
Dutse ⓘ Dutse Complex	Bennett et al. (1984) +3 other references
Katsina Faskari ⓘ Zagami Martian meteorite	T.J. McCoy +1 other reference
Plateau Jos Plateau ⓘ Kigom	OMADA et al. (2003)
Younger ring complex ⓘ Jos-Bukuru	Woolley (2001) +1 other reference
Zamfara Maru ⓘ Bingi BIF formation	Mücke et al. (2015)

North Korea
Ryanggang Province Samjiyon City ⓘ Paektu Mountain	Abstracts of the Eighth International Conference on Geochronology and Isotope Geology (1994)
ⓘ Nordmarkite ejecta	Suzuki (1938)

Northwest Africa Meteorites
ⓘ Northwest Africa 11119 meteorite (NWA 11119)	Srinivasan et al. (2018)
ⓘ Northwest Africa 1460 Martian meteorite (NWA 1460)	Irving et al. (2003, March)
ⓘ Northwest Africa 3170 Lunar meteorite (NWA 3170)	Gu et al. (2025)
ⓘ Northwest Africa 480 Martian meteorite (NWA 480)	Barrat et al. (2001)
ⓘ Northwest Africa 4964 meteorite (NWA 4964)	www.lpi.usra.edu (n.d.)
ⓘ Northwest Africa 5790 meteorite (NWA5790)	Jambon et al. (2010)
ⓘ Northwest Africa 5958 meteorite (NWA5958)	[var: Ferrohortonolite] Jacquet et al. (2016) +1 other reference
ⓘ Northwest Africa 6991 meteorite (NWA 6991)	Houde et al. (2023)
ⓘ Northwest Africa 7203 meteorite (NWA 7203)	Mikouchi et al. (2012) +1 other reference
ⓘ Northwest Africa 856 Martian meteorite (NWA 856; Djel Ibone Martian meteorite)	Leroux et al. (2006)

Norway
ⓘ Bouvet Island	Prestvik et al. (1999)
ⓘ Kapp Valdivia	Prestvik et al. (1999)
Buskerud Ringerike ⓘ Ringerike Ni Mines	Knut Edvard Larsen collection # MM-3621 ( Ex Harald Folvik collection)
Nordland Vågan ⓘ Holandshamn	Griffin et al. (1974)
Telemark Porsgrunn Langangen Kokkersvold - Blåfjell E18 roadcuts ⓘ Blåfjell (E18 roadcuts)	Grice et al. (2013)
ⓘ Ferrochiavennite dike	Grice et al. (2013)
Vestfold Færder ⓘ Sandø	Larsen et al. (2010)
Larvik Commune Brunlanes ⓘ Naverfjorden East	Neumann (1985)
Malerød ⓘ Malerød Quarry	Neumann (1985)
Tjølling ⓘ Ranvika	Kvamsdal (2023)
Tvedalen Tuften ⓘ A/S Granit Quarry	Peter Andresen collection - 2011

Oman
Al Wusta Governorate ⓘ Ghubara meteorite	Binns (1968)
Dhofar Governorate ⓘ Dhofar 287 Lunar meteorite (Dho 287)	Taylor et al. (2001)
ⓘ Dhofar 378 Martian meteorite (Dho 378)	Yukio et al. (2006)
ⓘ Dhofar 925 Lunar meteorite (Dho 925)	- (2004, July)

Poland
Lesser Poland Voivodeship Chrzanów County Gmina Trzebinia Trzebinia smelting plant ⓘ Trzebinia waste dump	Włodyka et al. (2015)
Lower Silesian Voivodeship Świdnica County Gmina Strzegom ⓘ Strzegom	Janeczek (1989)
Silesian Voivodeship Bytom Orzeł Biały Mine ⓘ Slag localities	Neschen (n.d.)
Tarnowskie Góry County Miasteczko Śląskie ⓘ HC Miasteczko Śląskie S.A. Zinc Smelting Plant	Nowinska (2020)

Portugal (TL)
Azores ⓘ Faial (TL)	Gmelin (1840)
ⓘ Horta	von Fellenberg (1840)
Conceição ⓘ Ponta de Espalamaca	von Fellenberg (1840)
ⓘ Pico	von Fellenberg (1840)
São Miguel ⓘ Água de Pau Volcano	Cann (1967)
ⓘ Terceira	Weston (1964) +6 other references
Angra do Heroísmo ⓘ Caldeira-Castelinho Ignimbrite Formation	Jeffery et al. (2016)
Beja Almodôvar Almodôvar e Graça dos Padrões Brancanes ⓘ Brancanes Mine	Oliveira et al. (2025)

Romania
Bistrița-Năsăud County Rodna Valea Vinului ⓘ Valea Vinului Mine	Papp et al. (2005)
Galați County Galați ⓘ Galați smelter	Hirtopanu (2006) +1 other reference
Harghita County ⓘ Mezö-Madaras meteorite (Fekete; Madaras; Maros; Mesö-Madarasz; Mezoe-Madaras; Weiler [NHM Cat.])	Binns (1968) +1 other reference
Maramureș County Târgu Lăpuș ⓘ Răzoare	Udubasa et al. (1996) +5 other references

Russia
Chechnya Mekensk ⓘ Groznaya meteorite (Grosnaja meteorite)
Chelyabinsk Oblast ⓘ Chelyabinsk coal basin	Cesnokov et al. (1998)
ⓘ Chelyabinsk meteorite (Chebarkul meteorite)	Sharygin et al. (2013)
Kopeysk ⓘ Coal mine No. 45	Chesnokov et al. (1989) +2 other references
ⓘ Mount Karandash	Victor Grigorievich Korinevsky et al. (16)
Krasnoyarsk Krai ⓘ Kingash	Radomskaya et al. (2017)
Taymyrskiy Autonomous Okrug Taimyr Peninsula ⓘ Khungtukun Massif	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	Krivolutskaya et al. (2021)
Taymyrsky Dolgano-Nenetsky District ⓘ Kresty Volcano–Plutonic Complex	Sazonov et al. (2024)
Kurgan Oblast ⓘ Kargapole meteorite	Erokhin et al. (2017, December)
Magadan Oblast Omsukchansky District Ducat ore field ⓘ Lunnyi Mine (Lunnoye)	Sergeevna (2020)
Murmansk Oblast ⓘ Eveslogchorr Mt	Yakovenchuk et al. (2008)
Kukisvumchorr Mt East slope ⓘ Tuliok River head	European Journal of Mineralogy 19 (2007)
ⓘ Marchenko Peak	Menshikov et al. (2015)
ⓘ Lovozero Massif	...
ⓘ Yudychvumchorr Mountain	Konopleva et al. (2008) +1 other reference
ⓘ Yum'echorr Mt (Yumjechorr)	Konopleva et al. (2008) +1 other reference
Primorsky Krai Olginsky District ⓘ Taukha terrane	Kazachenko et al. (2013)
Republic of Karelia Pitkyarantsky District Kitelya ⓘ Kitelskoe Sn-Zn deposit	V.A. Gorelov (1997)
Suojärvi District ⓘ Kuolisma gabbrodolerite	Коневин et al. (2020)
ⓘ Sakha	[World of Stones 12:49]
ⓘ Kildyam volcano complex	Kostin (2020) +1 other reference
Mirninsky District Daldyn ⓘ Udachnaya open-pit mine (Udachnaya-Vostochnaya pipe; Udachnaya pipe)	Mikhailenko +5 other references
Selennyakh range Tommot river ⓘ Somnitelnyi Massif	Trunilina et al. (2022)
Verkhoyansk Fold Belt Verkhoyansk Silver Province ⓘ Prognoz Sn-Ag deposit	Gamyanin et al. (1998)
Yamalo-Nenets Autonomous Okrug Labytnangi ⓘ Ozernoe Occurrence	Murzin et al. (2022)

Saint Helena， Ascension and Tristan da Cunha
ⓘ Ascension Island	Bell (1967) +41 other references
ⓘ 5 mile post	Harris et al. (1982)
ⓘ Gough Island	Le Maitre (1959) +5 other references
Tristan da Cunha Archipelago ⓘ Inaccessible Island	Baker et al. (1964) +2 other references

Saint Lucia
Choc ⓘ Rhyolite dykes	[var: Ferrohortonolite] Le Guen de Kerneizon et al. (1982) +1 other reference
Grande Rivière Village Morne Serpent hill ⓘ Rhyolite flow	Le Guen de Kerneizon et al. (1982)

Saudi Arabia
Ha'il Region ⓘ Silsilah Deposit	du Bray +2 other references
Medina Region ⓘ Harrats Khaybar	Baker et al. (1973) +1 other reference

Seychelles
ⓘ Silhouette Island	Baker (1963) +1 other reference

Slovakia
Košice Region Gelnica District Smolník ⓘ Hekerová manganese deposit	Myšľan et al. (2025)
Rožňava District Čučma ⓘ Čierna baňa	Koděra et al. (1986)
Dobšiná Dobšiná mining district ⓘ Danková serpentinite body	Háber et al. (Dankova, SGR Mnts)
ⓘ Teliatko serpentinite body	Pauliš et al. (2002)

South Africa
Gauteng City of Tshwane Metropolitan Municipality ⓘ Vergenoeg Mine	Company web site +2 other references
Limpopo Waterberg District Municipality Bela-Bela Local Municipality Bela-Bela ⓘ Zwartkloof defunct Fluorite Mine	Mineral Deposits of Southern Africa
Mogalakwena Local Municipality Mokopane ⓘ Tweefontein Farm	Buchanan et al. (1981)
North West Bojanala Platinum District Municipality Moses Kotane Local Municipality Pilanesberg Alkaline Ring Complex ⓘ Pilanesberg Mountain	Cairncross et al. (1995)
Rustenburg Local Municipality Rustenburg ⓘ Waaikraal gold deposit	Verryn et al. (1991)
Northern Cape Pixley ka Seme District Municipality Ubuntu Local Municipality ⓘ Silvery Home lamproite	Abersteiner et al. (2024)
Western Cape Cape Winelands District Municipality Witzenberg Local Municipality Koue Bokkeveld Mountain ⓘ Koue Bokkeveld meteorite	MacDougall et al. (1977) +1 other reference

South Korea
North Gyeongsang Province Ulleung County ⓘ Ulleungdo	Kim +7 other references
North Jeolla Province Jinan County Mount Munpilbong ⓘ Jinan Daeryang-ri copper smelter	Choi et al. (2024)

Spain
Andalusia Almería Cuevas del Almanzora Sierra Almagrera Villaricos ⓘ Dolores smelter slag locality	Navarro et al. (2008)
ⓘ Santa Ana smelter slag locality	Navarro et al. (2008)
Córdoba Obejo ⓘ Slag dumps	Calabrés +2 other references
Community of Madrid ⓘ Cadalso de los Vidrios	Garcia G. et al. (2004)
La Cabrera ⓘ La Cabrera pluton	Tánago et al. (2012)
Murcia Mazarrón ⓘ Mazarrón shipwreck II	Doménech-Carbó et al. (2024)

Sri Lanka
North Central Province Anuradhapura District ⓘ Seruwila deposit	Samarakoon et al. (2021)

Sweden
Dalarna County Ludvika ⓘ Hillängs Mine	Dana 6:457. +1 other reference
Gävleborg County Ovanåker ⓘ Loberget
Jämtland County Strömsund ⓘ Muruhatten
Jönköping County Jönköping Månsarp ⓘ Smålands Taberg	Hjelmqvist (1950)
Örebro County Askersund Zinkgruvan ⓘ Zinkgruvan mine	Sandström et al. (2011)
Ljusnarsberg Kopparberg ⓘ Kaveltorp Mines
Södermanland County Nyköping Svärta ore field ⓘ Gillinge mine
Tunaberg ⓘ Stora Uttersvik
ⓘ Strömshult Mines
Uppsala County Uppsala Almunge ⓘ Almunge complex
Värmland County Filipstad Persberg ore district ⓘ Gåsgruvan ore field	Sandström et al. (2009)
ⓘ Gåsgruvan Quarry	Östra Värmlands Mineral Society
Västerbotten County Lycksele ⓘ Svartliden Gold Mine (Svartliden)	Johan Söderhielm
Västmanland County Fagersta Västanfors ⓘ Hedkärra Mine

Switzerland
Grisons Maloja Region Bregaglia Upper Val Bregaglia Casaccia ⓘ Mota Farun slag locality	Wenk et al. (2019)
Ticino Lugano Alto Malcantone Breno ⓘ Slag locality	Stalder et al. (1998)

Tajikistan
Sughd Ayni District Fan-Jagnob coal deposit ⓘ Kukhi-Malik tract	Sharygin et al. (2009)
Gissar Range ⓘ Odzhuk pegmatite	Pavel M. Kartashov (n.d.)

Turkey
Ankara Province Altındağ District ⓘ Gicik Au-Ag ± Te deposit	Çil et al. (2026)
Bitlis Province Ahlat District ⓘ Nemrut Volcano	Pearce et al. (1990) +9 other references

UK
England Cornwall Crantock ⓘ The Gannel Smelter slag locality	BMS Newsletter 79 (http://britishmicromountsociety.homestead.com/Gannell-Smelter.html)
Lancashire West Lancashire Burscough ⓘ Burscough Quarry	BMS Newsletter 14. British Micromount Society (June 1985)
Merseyside Wirral ⓘ Thurstaston Beach	Day (1999)
Northern Ireland County Antrim ⓘ Portrush	[var: Ferrohortonolite] Ryback et al. (1988)
County Down ⓘ Mourne Mountains	Evans (1972)
Scotland East Lothian Haddington ⓘ Traprain Law	Battey et al. (1962)
Highland Eilean á Chèo Isle of Skye Minginish ⓘ Cuillin Hills	THOMPSON (1968) +2 other references
ⓘ Meall a'Mhaoil	Emeleus et al. (1992)
ⓘ Meall Dearg granite	THOMPSON (1968)
Sligachan ⓘ Marsco	Emeleus et al. (1992)
Wester Ross， Strathpeffer and Lochalsh Lochalsh Dornie Keppoch ⓘ Allt a Mhuilin	Render (n.d.)
North Ayrshire ⓘ Isle of Arran	...
Tormore ⓘ Judd's No. 1 dike	Harris et al. (1954)
West Lothian ⓘ Pumpherston	[var: Ferrohortonolite] Phemister (1942) +1 other reference

Ukraine
Crimea Alushta ⓘ Ayu-Dag Mountain	Alexander I. Tischenko (1996)
ⓘ Korsun-Novomirgorod pluton	Krivdik et al. (1988)
Mykolayiv Oblast Pervomaisk Raion ⓘ Krymka meteorite	Brearley et al. (1998)
Zhytomyr Oblast Zhytomyr Raion Khoroshiv Raion (Volodarsk-Volynskii) ⓘ Volyn Pegmatites	Shumlyanskyy et al. (2021)

USA
Alaska Denali Borough ⓘ Mystic Creek Coal Basin	Reidel et al. (2023)
American Samoa ⓘ Tutuila Island	Stearns (1944) +5 other references
Arizona Gila County Peridot ⓘ San Carlos Peridot area	Galbraith (1959) +2 other references
ⓘ Tolklai	Galbraith (1959) +2 other references
California 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	Parsons +3 other references
Imperial County Niland ⓘ Obsidian Butte	Rogers (1935) +3 other references
Inyo County Rose Valley ⓘ Little Lake	Collection of RJ Martin
Sugarloaf Mountain ⓘ Obsidian Ridge (Little Lake Perlite deposits; Desert Materials Corp. deposit)	Rogers (1922) +2 other references
ⓘ Unnamed lava flow [1]	Rutley (1890) +5 other references
ⓘ Los Angeles Martian meteorite	GROSSMAN et al. (2001) +3 other references
Riverside County Riverside Mount Rubidoux ⓘ Unnamed Fayalite-Iddingsite occurrence [1]	Banks (1962) +3 other references
Siskiyou County Cougar Butte ⓘ Cougar Butte occurrence (Canyon Butte; Couger Butte)	Murdoch (1966) +2 other references
ⓘ Unnamed Obsidian occurrence [1]	Murdoch et al. (1966) +2 other references
Colorado Douglas County Deckers Area ⓘ Sugarloaf Peak	Eckel et al. (1997)
ⓘ Devils Head Pegmatite Mining District	Eckel et al. (1997)
ⓘ Rampart Range	Eckel et al. (1997)
El Paso County ⓘ Cheyenne Mining District (St. Peters Dome Mining District)	- (2005)
ⓘ St Peters Dome	Eckel et al. (1997)
ⓘ Stove Mountain Mineral Locality (Cook Stove Mountain Mineral Locality)	- (2005)
ⓘ Cheyenne Mt area	[AmMin 84:196]
Crystal Park ⓘ Crystal Park area	Eckel et al. (1997)
ⓘ Mount Rosa	Eckel et al. (1997) +1 other reference
ⓘ Stove Mountain (Cookstove Mountain)	Hanson et al. (2013)
ⓘ Fairview	Eckel et al. (1997)
Jefferson County ⓘ West Creek	Eckel et al. (1997)
Park County ⓘ Rampart Range	Eckel et al. (1997)
Teller County ⓘ Cripple Creek Mining District	Carnein et al. (2005)
Georgia ⓘ Barrow County	Cook (1978)
Statham ⓘ Arnold Mine (L.M. Arnold and E.R. Arnold properties)	Rocks & Min.:64:185 +1 other reference
Hawaii Honolulu County Oahu Island ⓘ Salt Lake Crater	Goto et al. (1988)
Maui County Maui Island ⓘ Puu Koae	Velde (1978)
Idaho ⓘ Sawtooth Batholith	Rocks & Min. 70:246 +3 other references
Indiana Tippecanoe County Lafayette ⓘ Lafayette (stone) Martian meteorite	Berkley et al. (1980)
Kansas Decatur County ⓘ Leoville meteorite (Leoville CV3 chondrite)	Brearley et al. (1998)
Lyon County ⓘ Elm Creek meteorite	New York +4 other references
Maine Hancock County ⓘ Mount Desert	Wiebe et al. (1997)
Piscataquis County Big Moose Township ⓘ Fayalite locality	Espenshade
Little Moose Township ⓘ Route 16 roadcut	Espenshade
York County Newfield Straw Hill occurrence ⓘ Symmes Pond Syenite	Gilman
Shapleigh Newfield Wildlife Management Area locality ⓘ Abbott Mountain Syenite	Gilman
ⓘ Wells	King et al. (1994)
York ⓘ Mount Agamenticus	King et al. (1994)
ⓘ Mount Agamenticus Alkaline Syenite	Gilman
Massachusetts Berkshire County Cheshire ⓘ North Mountain Serpentine locality ("Dunite Locality" of Emerson) ?	"Western Massachusetts Mineral ...
Essex County ⓘ Gloucester	Gleba (2008)
ⓘ Railcut Hill	P. Cristofono collection
ⓘ Rockport	Palache (1950)
ⓘ Rockport Granite Company quarries
ⓘ Babson Farm Quarry	Palache (1950)
Michigan Marquette County Republic Township Republic ⓘ Republic Mine	Heinrich et al. (2004)
Minnesota ⓘ Duluth Complex	Tutolo et al. (2019)
Saint Louis County Babbitt ⓘ Northshore Mine (Peter Mitchell Mine; Reserve Mine; Babbitt Mine)	- (2005)
Montana Silver Bow County Butte Mining District (Summit Valley Mining District) ⓘ Butte Reduction Works smelter slag locality	Kaplan (2016)
Nevada Elko County ⓘ Toano Range	Castor et al. (2004)
Humboldt County ⓘ McDermitt Caldera Center	Castor et al. (2004)
Lincoln County ⓘ Kanes Springs Wash	Castor et al. (2004)
Nye County Mellan Mountain Mining District ⓘ Mellan Hills	Castor et al. (2004)
Nellis Air Force range ⓘ Belted Range	Castor et al. (2004)
ⓘ Oasis Valley	Macdonald et al. (2019)
ⓘ Silent Canyon volcanic center	Noble et al. (1968)
Pershing County Dry Lake Pershing ⓘ Bluewing 001 meteorite	www.meteorites4sale.net/MET_B.HTM
New Hampshire Carroll County Jackson ⓘ Jackson Falls	...
Coos County Carroll ⓘ Cherry Mountain
Grafton County ⓘ Franconia	Smith (2005)
Rockingham County Nottingham ⓘ Mount Pawtuckaway	Eby (1984)
New Jersey Sussex County ⓘ Franklin	Brush (1871) +3 other references
ⓘ Franklin Mine	[var: Roepperite (of Brush)] Dana et al. (1892)
ⓘ Buckwheat pit	[var: Roepperite (of Brush)] www.fomsnj.org (n.d.)
Ogdensburg Sterling Hill ⓘ Sterling Mine	[var: Roepperite (of Brush)] Burns et al. (1972) +1 other reference
New Mexico ⓘ Otero County	Northrop et al. (1996)
ⓘ Cornudas Mountains	Northrop et al. (1996)
ⓘ Wind Mountain	USGS GEOLOGIC INVESTIGATIONS SERIES ... +1 other reference
ⓘ Sandoval County	Northrop et al. (1996)
ⓘ Bandelier tuff	Northrop et al. (1996)
New York Orange County ⓘ Town of Monroe	NY State Museum spec. no. 15894
Lake Mombasha ⓘ O'Neil Mine	Robinson et al. (2007)
North Carolina Jackson County ⓘ Webster-Balsam	U.S Department Of Commerce +1 other reference
Macon County Cowee Valley ⓘ Ellijay Mining District	U.S Department Of Commerce +1 other reference
Yancey County Day Book ⓘ Green Mountain Mine	C.W. Allen collection
Oklahoma Caddo County ⓘ Caddo County meteorite	- (1993)
Oregon Lane County McKenzie Pass North Sister Mountain ⓘ Obsidian Cliffs	Olsen et al. (1970) +1 other reference
Pennsylvania York County Frogtown ⓘ Reeser's Summit	Smith et al. (1972) +1 other reference
Texas Burnet County ⓘ Buchanan dam	Smith (1991)
Llano County Packsaddle Mountain ⓘ Slag dump	in the personal collection of Jennifer ...
Randall County ⓘ Umbarger meteorite	Zhidong Xie et al. (2005)
Vermont Rutland County Shrewsbury Cuttingsville ⓘ Granite Hill	Rocks & Min. Vol. 71 (1996)
Windsor County ⓘ Ascutney Mountain complex	Schneiderman (1991)
Virginia Gloucester County ⓘ Sarahs Creek	Dietrich (1990)
Henrico County ⓘ Sharps meteorite	Brearley et al. (1998)
Pittsylvania County James River-Roanoke River Mn-Fe-Ba Mining District ⓘ Hutter Mine (Herter Magnetite Mine)	Beard et al. (2002)
Washington Ferry County Belcher Mining District ⓘ Overlook Mine	Adamera Minerals
Okanogan County Golden Horn Batholith ⓘ Washington Pass	Micro Probe Volume VI Number 8
Wisconsin ⓘ Ashland County	www.uwrf.edu/~wc01
ⓘ Markle Drive outcrops	Cordua (1998)
Marathon County Wausau Intrusive Complex ⓘ "Rotten granite" quarries	Cordua (1998)
Stettin pluton ⓘ County road U road cut	Cordua (1998)
Wyoming Albany County Iron Mountain Mining District ⓘ Sybille pit (Sybille quarry)	Frost et al. (eds.)
Goshen County ⓘ Goshen Hole Rim	Izett et al. (1968)
Teton County Moran ⓘ Glade Creek	Iddings et al. (1892)
ⓘ Yellowstone National Park	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)	Meteoritical Society Abstracts (2001)

Yemen
Aden Governorate ⓘ Aden Volcano	Cox et al. (1969) +2 other references
ⓘ Little Aden Peninsula	Manasse (1908) +3 other references

The Moon
Fra Mauro Highlands ⓘ Fra Mauro Base (Apollo 14 landing site)	El Goresy et al. (1971)
Mare Crisium ⓘ Luna 24 landing site	Pavel M. Kartashov analytical data (2013)
ⓘ Mare Tranquillitatis (Sea of Tranquility)	Geochemica et Cosmochimica Acta: 34 (1)
ⓘ Tranquillity Base (Apollo 11 landing site)	Vol.2: Chemical Isotope Analyses +2 other references
Oceanus Procellarum (Ocean of Storms) ⓘ Chang'e 5	Jin et al. (2025)
ⓘ Statio Tianchuan	Yang et al. (2024)

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Fayalite

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