Cummingtonite-Grunerite Series

Grunerite, etc.

Helen-MacLeod Mines, McMurray and Chabanel Townships, Algoma District, Ontario, Canada

Cummingtonite

Birkeland mines, Sauda, Rogaland, Norway

Cummingtonite

Franklin Mine, Franklin, Sussex County, New Jersey, USA

Grunerite, etc.

Helen-MacLeod Mines, McMurray and Chabanel Townships, Algoma District, Ontario, Canada

Cummingtonite

Birkeland mines, Sauda, Rogaland, Norway

Cummingtonite

Franklin Mine, Franklin, Sussex County, New Jersey, USA

Grunerite, etc.

Helen-MacLeod Mines, McMurray and Chabanel Townships, Algoma District, Ontario, Canada

Cummingtonite

Birkeland mines, Sauda, Rogaland, Norway

About Cummingtonite-Grunerite SeriesHide

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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)
0000002	Grunerite	Finger L W (1969) The crystal structure and cation distribution of a grunerite Mineralogical Society of America Special Paper 2 95-100		1969	Wabush iron formation, Labrador, Canada	0	293
0001789	Cummingtonite	Yang H, Smyth J R (1996) Crystal structure of a P2_1/m ferromagnesian cummingtonite at 140 K American Mineralogist 81 363-368		1996		0	295
0001970	Cummingtonite	Yang H, Hazen R M, Prewitt C T, Finger L W, Lu R, Hemley R J (1998) High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2_1/m phase transition in cummingtonite American Mineralogist 83 288-299		1998		0	293
0001754	Cummingtonite	Yang H, Hirschmann M M (1995) Crystal structure of P2_1/m ferromagnesian amphibole and the role of cation ordering and composition in the P2_1/m - C2/m transition in cummingtonite American Mineralogist 80 916-922		1995		0	293
0001753	Cummingtonite	Yang H, Hirschmann M M (1995) Crystal structure of P2_1/m ferromagnesian amphibole and the role of cation ordering and composition in the P2_1/m - C2/m transition in cummingtonite American Mineralogist 80 916-922		1995		0	293
0001752	Cummingtonite	Yang H, Hirschmann M M (1995) Crystal structure of P2_1/m ferromagnesian amphibole and the role of cation ordering and composition in the P2_1/m - C2/m transition in cummingtonite American Mineralogist 80 916-922		1995		0	293
0001266	Cummingtonite	Ghose S, Yang H (1989) Mn-Mg distribution in a C2/m manganoan cummingtonite: Crystal-chemical considerations American Mineralogist 74 1091-1096		1989		0	293
0000145	Cummingtonite	Fischer K F (1966) A further refinement of the crystal structure of cummingtonite (Mg,Fe)7(Si4O11)2(OH)2 American Mineralogist 51 814-818		1966		0	293
0001788	Cummingtonite	Yang H, Smyth J R (1996) Crystal structure of a P2_1/m ferromagnesian cummingtonite at 140 K American Mineralogist 81 363-368		1996		0	140
0001971	Cummingtonite	Yang H, Hazen R M, Prewitt C T, Finger L W, Lu R, Hemley R J (1998) High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2_1/m phase transition in cummingtonite American Mineralogist 83 288-299		1998		0.6	293
0001972	Cummingtonite	Yang H, Hazen R M, Prewitt C T, Finger L W, Lu R, Hemley R J (1998) High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2_1/m phase transition in cummingtonite American Mineralogist 83 288-299		1998		1.1	293
0001973	Cummingtonite	Yang H, Hazen R M, Prewitt C T, Finger L W, Lu R, Hemley R J (1998) High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2_1/m phase transition in cummingtonite American Mineralogist 83 288-299		1998		1.32	293
0001974	Cummingtonite	Yang H, Hazen R M, Prewitt C T, Finger L W, Lu R, Hemley R J (1998) High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2_1/m phase transition in cummingtonite American Mineralogist 83 288-299		1998		2.97	293
0001975	Cummingtonite	Yang H, Hazen R M, Prewitt C T, Finger L W, Lu R, Hemley R J (1998) High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2_1/m phase transition in cummingtonite American Mineralogist 83 288-299		1998		5.09	293
0001976	Cummingtonite	Yang H, Hazen R M, Prewitt C T, Finger L W, Lu R, Hemley R J (1998) High-pressure single-crystal X-ray diffraction and infrared spectroscopic studies of the C2/m-P2_1/m phase transition in cummingtonite American Mineralogist 83 288-299		1998		7.9	293

CIF Raw Data - click here to closedata_global _chemical_name_mineral 'Grunerite' loop_ _publ_author_name 'Finger L W' _journal_name_full 'Mineralogical Society of America Special Paper' _journal_volume 2 _journal_year 1969 _journal_page_first 95 _journal_page_last 100 _publ_section_title ; The crystal structure and cation distribution of a grunerite ; _database_code_amcsd 0000002 _chemical_compound_source 'Wabush iron formation, Labrador, Canada' _chemical_formula_sum '(Fe6.1 Mg.9) Si8 O23.5 (F.5 H1.5)' _cell_length_a 9.5642 _cell_length_b 18.393 _cell_length_c 5.3388 _cell_angle_alpha 90 _cell_angle_beta 101.892 _cell_angle_gamma 90 _cell_volume 919.015 _exptl_crystal_density_diffrn 3.521 _symmetry_space_group_name_H-M 'C 1 2/m 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,z' '1/2+x,1/2-y,z' '-x,y,-z' '1/2-x,1/2+y,-z' '-x,-y,-z' '1/2-x,1/2-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 0.08781 0.50000 0.84800 0.00646 Mg1 0.00000 0.08781 0.50000 0.15200 0.00646 Fe2 0.00000 0.17936 0.00000 0.77300 0.00646 Mg2 0.00000 0.17936 0.00000 0.22700 0.00646 Fe3 0.00000 0.00000 0.00000 0.88800 0.00709 Mg3 0.00000 0.00000 0.00000 0.11200 0.00709 Fe4 0.00000 0.25741 0.50000 0.98500 0.01165 Mg4 0.00000 0.25741 0.50000 0.01500 0.01165 Si1 0.28670 0.08360 0.27070 1.00000 0.00557 Si2 0.29930 0.16670 0.77800 1.00000 0.00621 O1 0.11200 0.08820 0.20440 1.00000 0.00849 O2 0.12530 0.17350 0.71420 1.00000 0.00747 O-H3 0.11470 0.00000 0.70350 0.75000 0.01381 F3 0.11470 0.00000 0.70350 0.25000 0.01381 O4 0.38390 0.24160 0.76890 1.00000 0.00735 O5 0.34830 0.12750 0.05190 1.00000 0.00975 O6 0.34780 0.11820 0.55300 1.00000 0.01089 O7 0.33760 0.00000 0.27000 1.00000 0.00937 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Fe1 0.00532 0.00943 0.00498 0.00000 0.00198 0.00000 Mg1 0.00532 0.00943 0.00498 0.00000 0.00198 0.00000 Fe2 0.00532 0.00823 0.00622 0.00000 0.00198 0.00000 Mg2 0.00532 0.00823 0.00622 0.00000 0.00198 0.00000 Fe3 0.00621 0.00857 0.00622 0.00000 0.00074 0.00000 Mg3 0.00621 0.00857 0.00622 0.00000 0.00074 0.00000 Fe4 0.00843 0.01645 0.01106 0.00000 0.00421 0.00000 Mg4 0.00843 0.01645 0.01106 0.00000 0.00421 0.00000 Si1 0.00399 0.00703 0.00553 -0.00026 0.00050 0.00000 Si2 0.00444 0.00651 0.00747 -0.00166 0.00074 0.00000 O1 0.00577 0.01028 0.00899 0.00000 0.00173 0.00146 O2 0.00399 0.01028 0.00940 -0.00087 0.00272 -0.00146 O-H3 0.01864 0.01200 0.01272 0.00000 0.00570 0.00000 F3 0.01864 0.01200 0.01272 0.00000 0.00570 0.00000 O4 0.00887 0.00686 0.00567 -0.00087 -0.00050 0.00097 O5 0.00355 0.01371 0.01244 -0.00262 0.00223 0.00730 O6 0.00399 0.02057 0.00760 0.00349 -0.00025 -0.00438 O7 0.00843 0.00000 0.02019 0.00000 0.00520 0.00000

Other InformationHide

Cummingtonite-Grunerite Series in petrologyHide

Internet Links for Cummingtonite-Grunerite SeriesHide

References for Cummingtonite-Grunerite SeriesHide

Localities for Cummingtonite-Grunerite SeriesHide

Showing 743 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.

Antarctica	[Cummingtonite]
East Antarctica Adélie Land ⓘ Débarquement Rock	[Cummingtonite] Godard et al. (2017)
Queen Maud Land ⓘ Steingarden area	[Cummingtonite] Schlüter et al. (2011)
Australia
New South Wales Yancowinna Co. ⓘ Allendale Mine	[Grunerite] Slack et al. (1993)
Broken Hill district ⓘ Broken Hill	[Grunerite] Birch BH Book
ⓘ North Mine	[Grunerite] Collection of M. Willoughby. Analysis ...
ⓘ Potosi Silver Peak Mine (Silver Peak Mine)	[Cummingtonite] Teals et al. (2006)
Northern Territory Central Desert Region Harts Range (Harts Ranges; Hartz Range; Hartz Ranges) Ambalindum Station Mount Mabel ⓘ Oonagalabi Prospect	[Cummingtonite] Warren et al. (1974)
Strangways Range ⓘ Harry Creek Prospect (Harry Bore; Snake Well; Baldissera's Prospect; Iona)	[Cummingtonite, Grunerite] Pigott et al. (1984)
Tanami Range ⓘ Bunkers Hill Mine	[Cummingtonite] - (2023) +1 other reference
ⓘ Tanami mine (The Granites mine; Ivy mine; Shoe mine; Quorn mine)	[Cummingtonite] Newmont Mining Corporation
Queensland Cloncurry Shire ⓘ Duchess	[Cummingtonite] ref: AmMin 47:360
Selwyn District ⓘ Pegmont Pb-Zn deposit (Pegmont Mine)	[Grunerite] Vaughan (1986) +1 other reference
Mareeba Shire Petford ⓘ Sunnymount Mine	[Cummingtonite] - (1998)
McKinlay Shire McKinlay ⓘ Cannington Mine	[Grunerite] Singer et al. (2009)
South Australia District Council of Franklin Harbour ⓘ Bungalow prospect	[Cummingtonite] www.centrexmetals.com.au (n.d.)
ⓘ Minbrie prospect	[Cummingtonite] www.centrexmetals.com.au (n.d.)
Pastoral Unincorporated Area Arkaroola (Arkaroola Wilderness Sanctuary; Arkaroola Station) ⓘ Arkaroola Bore	[Cummingtonite] Noble et al. (1983)
Gilles Downs ⓘ Stony Hill Prospect	[Cummingtonite] www.centrexmetals.com.au (n.d.)
Iron Knob ⓘ Iron Monarch Main Pit	[Cummingtonite, Grunerite] Sorrell (n.d.)
Tasmania Circular Head municipality Balfour-Temma district Temma ⓘ Nelson Bay River mine	[Grunerite] Bottrill et al. (2008)
ⓘ Strickland mine	[Grunerite] Bottrill (2004)
Waratah-Wynyard municipality Corinna-Savage River district ⓘ Savage River Mines	[Cummingtonite] Bottrill & Taheri
Heazlewood district Luina ⓘ Mt Cleveland Mine	[Grunerite]
ⓘ Mt Youngbuck skarn	[Cummingtonite] Bottrill et al. (2008)
West Coast municipality ⓘ Trial Harbour district	[Cummingtonite] Bottrill et al. (2008)
ⓘ Kelvin and Maynes tin mine	[Cummingtonite] R Bottrill
Western Australia Coolgardie Shire Kambalda St. Ives gold camp ⓘ Cave Rocks Gold Mine	[Cummingtonite] Steffen Robertson & Kirsten Pty Ltd (2004)
Nepean ⓘ Nepean Ni Mine	[Cummingtonite] Nepean Nickel Deposit +2 other references
Spargoville ⓘ Mount Marion Gold Mine (Ghost Crab)	[Cummingtonite] Porter Geo International Study Tour ...
Cue Shire Cue ⓘ Big Bell Gold Mine (Paton's Find; Murchison Bell)	[Cummingtonite] www.portergeo.com.au (2003)
Quinns gold area ⓘ Austin prospect	[Cummingtonite] Hassan (2017)
Dowerin Shire ⓘ Dowerin	[Cummingtonite] MinMag 66 (6)
ⓘ Dowerin Chrysoberyl pit	[Cummingtonite] Downes et al. (2002)
Dundas Shire Fraser Range ⓘ King deposit	[Grunerite] Kelly et al. (2024) +2 other references
ⓘ King North prospect	[Grunerite] Kelly et al. (2024)
Norseman Lake Johnston ⓘ Maggie Hays Nickel Mine	[Cummingtonite, Grunerite] Maggie Hays Nickel Mineralization +2 other references
East Pilbara Shire ⓘ Desert Gold prospect	[Grunerite] Fetherston et al. (2013)
Halls Creek Shire Koongie Park Station ⓘ Sandiego prospect (Gordon Downs 2)	[Grunerite] Orth (2002)
ⓘ Kalgoorlie-Boulder Shire	[Grunerite] Steadman et al. (2014)
Mount Monger Goldfield ⓘ Randalls	[Grunerite] Steadman et al. (2014) +1 other reference
Kondinin Shire ⓘ Cosmic Boy Ni Mine	[Grunerite] Marston (1984)
ⓘ Digger Rocks Ni Mine (Diggers Rock; South Endeavour)	[Grunerite] Marston (1984)
ⓘ Flying Fox Mine (Flying Fox Ni Mine)	[Cummingtonite] Collins et al. (2012)
ⓘ Liquid Acrobat Ni prospect	[Grunerite] Marston (1984)
Laverton Shire Laverton Windarra Ni Mine (Mount Windarra; Windarra; Discovery gossan; Poseidon deposit) ⓘ South Windarra deposit	[Grunerite] www.poseidonresources.com (n.d.)
Leonora Shire Bronzewing Goldfield (Mount McClure) ⓘ Mount Joel gold prospects	[Cummingtonite] Neil Phillips et al. (1998)
Leinster ⓘ Perseverance Mine	[Cummingtonite] Econ Geol (1988)
Leonora ⓘ Jasper Flat Gold Mine (Auckland)	[Grunerite] Williams (1998)
Meekatharra Shire Gabanintha Quinns gold area ⓘ Tasman prospect	[Grunerite] Hassan (2017)
Peak Hill Mining District ⓘ Mount Pleasant Gold Mine	[Grunerite] Pirajno et al. (1998)
Menzies Shire Menangina Station ⓘ Carr Boyd Rocks Ni mine	[Cummingtonite] Marston (1984)
Plumridge Lakes Nature Reserve Tropicana Gold Mine ⓘ Tropicana deposit	[Grunerite] Spaggiari et al. (2011)
Morawa Shire ⓘ Koolanooka Iron Ore Mine	[Grunerite] www.portergeo.com and ...
Mount Magnet Shire Mount Magnet Boogardie Goldfield ⓘ Hill 50 Gold Mine	[Grunerite] Gole (1981)
Ngaanyatjarraku Shire West Musgrave Block Mantamaru Community ⓘ Succoth deposit	[Cummingtonite] Grguric et al. (2018)
Sandstone Shire Youangarra Goldfield (Curran's Find) ⓘ Pincher Well (Pincher Hill) prospect	[Grunerite] Ferguson (1999)
ⓘ Yuinmery volcanogenic massive sulfide project	[Cummingtonite] Hassan (2014)
Wongan-Ballidu Shire Wongan Hills ⓘ Ninan prospect	[Grunerite] Ferguson (1999)
Yalgoo Shire Retaliation Goldfield Mount Gibson Conservation Reserve ⓘ Mount Gibson Iron Ore Mine (Extension Hill D50)	[Grunerite] Lascelles (2006)
Yilgarn Shire Forrestania Goldfield (Mount Holland) ⓘ Bounty Gold Mine	[Grunerite] Mueller (1997)
Marvel Loch ⓘ Marvel Loch Gold Mine	[Cummingtonite] Eilu (2003)
ⓘ Nevoria Gold Mine	[Cummingtonite, Grunerite] Phillips et al. (1984)
Southern Cross ⓘ Fraser's Gold Mine	[Cummingtonite, Grunerite] Fraser Gold Deposit +3 other references
ⓘ Transvaal Gold Mine	[Grunerite] Hagemann et al. (1998) +2 other references
Austria
Carinthia Klagenfurt-Land District Moosburg Stallhofen ⓘ Kamuderkeusche	[Grunerite] Meixner (1978) +1 other reference
Spittal an der Drau District Mallnitz Niederer Tauern (Mallnitzer Tauern) ⓘ Emilienbau Mine	[Cummingtonite] G.Blaß
Völkermarkt District Griffen ⓘ St. Leonhard auf der Saualpe	[Cummingtonite] Niedermayr et al. (1995)
Wolfsberg District Sankt Andrä ⓘ Pölling	[Cummingtonite] Niedermayr et al. (1995)
Sankt Paul im Lavanttal Kollnitz ⓘ Basalt quarry	[Cummingtonite] J. E. Zirkl: Der Karinthin 43/44:175-188 (1961)
Lower Austria Horn District Geras Kottaun ⓘ Arzberg	[Cummingtonite] Götzinger (1981) +2 other references
Krems-Land District Spitz ⓘ Mosinggraben	[Cummingtonite] Schermann (1971)
Salzburg Tamsweg District Ramingstein ⓘ Silver mines (incl. Altenberg District; Dürrenrain District; Haderbau)	[Grunerite] Auer (2023)
Tyrol Lienz District Lienz ⓘ Schlossberg	[Cummingtonite] Altenberger et al. (2026)
Prägraten am Großvenediger Timmelbach valley ⓘ Wunwand (Wunspitze)	[Cummingtonite] Kolitsch et al. (2018)
Upper Austria Perg District Saxen ⓘ Hofkirchen ?	[Cummingtonite] Arthofer et al. (2009)
Bolivia
Santa Cruz Chiquitos Province Cerro Pelado ⓘ Don Mario mine	[Cummingtonite, Grunerite, Grunerite var: Amosite] Rivas et al. (1998)
Bosnia and Herzegovina
Republika Srpska Doboj ⓘ Ozren Massif	[Grunerite] Putiš et al. (2022) +1 other reference
Botswana
North-East District Mupane Gold Project ⓘ Tau Pit	[Grunerite] Glanville et al. (2011)
Shashe deposits ⓘ Golden Eagle pit	[Grunerite, Grunerite var: Amosite] Phili et al. (2024)
Brazil
Amapá Pedra Branca do Amapari ⓘ Tucano mine	[Cummingtonite, Grunerite] Soares et al. (2025)
Serra do Navio ⓘ Serra do Navio mines	[Cummingtonite] Uchôa Filho et al. (2025)
Bahia Boquira ⓘ Boquira mine	[Cummingtonite, Grunerite] Misi et al. (1999)
Caetité Maniaçu ⓘ Espírito Santo deposit	[Cummingtonite] [[1]]Santos et al. (2020)
Goiás Crixás gold field Crixás ⓘ Mine III	[Cummingtonite, Grunerite] de Oliveira et al. (2003)
Mara Rosa Mara Rosa Gold Project ⓘ Zacarias pit	[Cummingtonite] Palermo et al. (2008)
Minas Gerais ⓘ Conselheiro Lafaiete	[Cummingtonite] Williams et al. (2008)
ⓘ Morro da Mina mine	[Cummingtonite]
ⓘ Serra do Sapo deposit Conceição do Mato Dentro	[Cummingtonite, Grunerite] Porter Geoconsultancy website
Pará Almeirim Ipitinga mining district ⓘ Vila Nova BIF occurrences	[Grunerite] Faraco +2 other references
Canaã dos Carajás ⓘ Sossego mine	[Grunerite] Vale SA
Curionópolis ⓘ Lago Grande Complex	[Cummingtonite] Teixeira (2014)
Marabá ⓘ Buritirama Mine	[Cummingtonite] Salgado et al. (2019)
ⓘ Salobo Mine	[Grunerite] Vale SA
Parauapebas Alemão Cu deposit ⓘ Alemão Cu mine	[Cummingtonite, Grunerite] Huang et al. (2022)
ⓘ Igarapé Bahia mine	[Cummingtonite, Grunerite] Dreher et al. (2008)
ⓘ Furnas Southeast deposit	[Grunerite] Leão-Santos et al. (2022)
ⓘ Gameleira Cu-Au deposit	[Grunerite] Grainger et al. (2008)
ⓘ Pojuca Cu-Au-Zn deposit	[Cummingtonite, Grunerite] Oliveira et al. (2025)
São Félix do Xingu ⓘ Açia Au-Cu deposit	[Grunerite] Fernandes et al. (2023)
ⓘ AQW2 deposit	[Cummingtonite, Grunerite] Stama et al. (2026)
Paraíba Catingueira Itajubatiba ⓘ Itajubatiba skarn deposit	[Grunerite] Souza Neto et al. (2008)
Rio Grande do Norte Lajes ⓘ Bonfim Mine	[Cummingtonite] Souza Neto et al. (2008)
Burkina Faso
Sahel Region Oudalan Province ⓘ Oursi Department	[Cummingtonite] Neybergh et al. (1980)
Cameroon
East Region Haut-Nyong Ngoyla ⓘ Njweng Fe deposit	[Grunerite] Ilouga et al. (2013)
Northwest Region Donga-Mantung Nkambe ⓘ Adamellite outcrop	[Grunerite] Tetsopgang et al. (2003)
South Region Dja-Et-Lobo Djoum ⓘ Nkout Fe deposit	[Grunerite] Anderson et al. (2014)
Océan Bipindi ⓘ Gouap Fe deposit	[Cummingtonite] Soh Tamehe et al. (2021)
Canada
British Columbia New Westminster Mining Division Hope ⓘ Giant Mascot Mine	[Cummingtonite] Manor et al. (2014)
Omineca Mining Division Pinchi Lake ⓘ Blueschist occurrence	[Cummingtonite] Ghent et al. (1990)
Manitoba Lynn Lake District Laurie Lake ⓘ Lar deposit	[Cummingtonite] Elliott-Meadows et al. (2000)
Lynn Lake Mine ⓘ Farley Lake deposit	[Grunerite] Lawley et al. (2020)
ⓘ Namew Lake mine	[Cummingtonite] Menard et al. (1996)
Snow Lake District ⓘ Lalor deposit	[Cummingtonite] Duff (2016)
Thompson Nickel Belt Moab-Setting Lakes area ⓘ Thompson Mine	[Cummingtonite, Grunerite] Paktunc (1984)
ⓘ Unnamed pit	[Grunerite] Phillips (1979)
ⓘ Utik Lake Banded Iron Deposit	[Grunerite] Bernier (1990) +1 other reference
New Brunswick Gloucester Co. Bathurst Parish Bathurst Mining Camp ⓘ Austin Brook deposit	[Grunerite] Peter et al. (1996)
Newfoundland and Labrador Labrador Carol Lake ⓘ Smallwood Mine	[Cummingtonite, Grunerite] Klein (1966)
ⓘ Flowers River complex	[Grunerite] Ducharme (2020)
Wabush Lake ⓘ Scully mine	[Cummingtonite, Grunerite] Chakraborty (1963)
ⓘ Walsh River rapids	[Grunerite] www.geosurv.gov.nf.ca/gacmap/LAB2.html.
Northwest Territories North Slave Region Yellowknife ⓘ Discovery Mine	[Cummingtonite] Whitty (2007)
Nunavut ⓘ Chantrey Inlet pegmatite field	[Grunerite] P.B. Tomascak et al. (1994)
Kitikmeot Region ⓘ Lupin Mine	[Grunerite] Meinert +2 other references
Kivalliq Region Baker Lake ⓘ Meadowbank Gold Mine	[Cummingtonite, Grunerite] Agnico Eagle Mines Limited
Ontario Algoma District Elliot Lake area Gunterman Township ⓘ Nordic Mine	[Grunerite] Robertson (1976)
McMurray and Chabanel Townships ⓘ Helen-MacLeod Mines	[Grunerite]
McMurray Township ⓘ George W. MacLeod mine	[Grunerite]
Frontenac County Barrie Township ⓘ Ore Chimney Mine (Bey Mines)	[Cummingtonite] Econ Geol (1989)
Greater Sudbury Hutton Township ⓘ Moose Mountain Mine	[Cummingtonite, Grunerite] Markland et al. (UNK)
Levack Township ⓘ Strathcona Mine	[Grunerite] Springer (1989)
Kenora District ⓘ Lundmark-Akow Lake Property	[Grunerite] Romios Gold Resources Inc.
Skinner Lake Area ⓘ Musselwhite Mine	[Cummingtonite, Grunerite] Mueller (1997)
Zealand Township ⓘ Taylor #2 pegmatite	[Cummingtonite] Brand et al. (2009)
Québec Abitibi-Témiscamingue La Vallée-de-l'Or RCM Réservoir-Dozois ⓘ Cabonga Reservoir	[Cummingtonite] Olivier Langelier Collection
Val d'Or ⓘ Chimo Mine	[Grunerite] Sabina (2003) +1 other reference
Rouyn-Noranda TE ⓘ Ansil Mine	[Cummingtonite, Grunerite] Galley et al. (2000)
Estrie Les Sources RCM Val-des-Sources ⓘ Jeffrey Mine	[Cummingtonite] Normand (2001) +1 other reference
Nord-du-Québec Jamésie Baie-James ⓘ Regnault Project	[Cummingtonite] Mathieu et al. (2022)
Matagami ⓘ Mattagami Lake mine	[Cummingtonite] Canadian Mineralogist 31 +2 other references
Nunavik ⓘ Payne Bay	[Cummingtonite, Grunerite] Moorhouse et al. (1963)
Outaouais La Vallée-de-la-Gatineau RCM Lac-Pythonga ⓘ Renzy Lake deposit (Vulcain property)	[Cummingtonite] Thomson et al. (1981)
Les Collines-de-l'Outaouais RCM ⓘ Cantley	[Cummingtonite] May 1984 +4 other references
Pontiac RCM ⓘ L'Île-du-Grand-Calumet	[Cummingtonite] Williams (1990)
Saguenay-Lac-Saint-Jean Le Fjord-du-Saguenay RCM ⓘ Bégin-Lamarche Fe-Ti-P deposit	[Cummingtonite] Banerjee et al. (2026)
Saskatchewan Amisk Lake District ⓘ Coronation Mine	[Cummingtonite] Coombe Geoconsultants Ltd. (1991)
ⓘ Foster River	[Cummingtonite] Steadman et al. (2015) +1 other reference
ⓘ Strange Lake Alkalic Complex (Strange Lake Complex; Lac Brisson Complex)	[Grunerite] Miller (2021)
China
Anhui Anqing Taihu County Lake Hualiangting ⓘ Huangzhen-Zhujiachong area	[Cummingtonite] Castelli et al. (1998)
Fujian Longyan Zhangping Co. ⓘ Makeng Fe deposit	[Cummingtonite, Grunerite] Yi et al. (2024)
Gansu Jinchang Jinchuan District ⓘ Jinchuan Ni-Cu-PGE deposit (Baijiajuzi Ni-Cu-PGE deposit)	[Cummingtonite] Proceedings 30th Intl Geol Cong Vol 16 ...
Hebei Qinhuangdao Qinglong County ⓘ Miaogou Mine	[Cummingtonite, Grunerite] USGS Open-File Report 03-220
ⓘ Zhalanzhangzi Fe deposit	[Cummingtonite] wrgis.wr.usgs.gov (2004)
Heilongjiang Jiamusi Tangyuan Co. ⓘ Dongfengshan Au-(Co) deposit	[Grunerite] Wei Juying and Zeng Qiang (1996)
Henan Zhumadian ⓘ Xincai County	[Grunerite] Hu et al. (2024)
Hubei Huangshi Daye Co. ⓘ Jinshandian Mine	[Grunerite] Pan et al. (1999)
ⓘ Lingxiang Mine	[Grunerite] Pan et al. (1999)
Inner Mongolia Baotou City Bayan Obo mining district ⓘ Bayan Obo deposit	[Cummingtonite] Qing-chang (1981)
Bayannur City (Bayannao'er Prefecture) Urad Rear Banner (Wulate Houqi) ⓘ Huogeqi Mine (Hegeqi Mine)	[Grunerite] Xinming Jiang (1983)
Chifeng City (Ulanhad League; Chifeng Prefecture) Bairin Left Banner (Balin Zuoqi) ⓘ Haobugao Cu-polymetallic deposit	[Grunerite] Yiming Zhao and Daxin Li (2003)
Hinggan League Tuquan County ⓘ Naoniushan Cu-(Au) deposit	[Grunerite] Xixin Zhang (1989)
Hulunbuir City (Hulunbei'er Prefecture) New Barag Right Banner (Xin Barag Youqi) ⓘ Halasheng Ag-Pb-Zn deposit	[Cummingtonite] Han et al. (2022) +1 other reference
Xilingol League (Xilinguole Prefecture) Plain Blue Banner (Zhenglan Co.) ⓘ Yangtizishan-Moshishan Ti deposit	[Grunerite] Yiming Zhao et al. (2006)
Jilin Jilin Huadian City ⓘ Laoniugou Fe deposit (Laoniuguo Fe deposit)	[Cummingtonite] wrgis.wr.usgs.gov (2004)
Siping Gongzhuling ⓘ Fangniugou Pb-Zn deposit	[Grunerite] wrgis.wr.usgs.gov (2004)
Liaoning Benxi Nanfen District ⓘ Dataigou BIF	[Cummingtonite, Grunerite] Wang et al. (2024)
Xihu District ⓘ Waitoushan Fe Mine	[Cummingtonite] wrgis.wr.usgs.gov (2004)
Liaoyang Gongchangling District ⓘ Gongchangling Fe deposit	[Cummingtonite] wrgis.wr.usgs.gov (2004)
Qinghai Hainan Xinghai County ⓘ Saishitang Mine (Saishentang Mine; Sashitang Mine)	[Cummingtonite] Pan et al. (2026)
Haixi Mongol and Tibetan Autonomous Prefecture Dulan County ⓘ Hatuzhongyou REE deposit	[Grunerite] Hui et al. (2025)
Shanxi Lüliang Fangshan County ⓘ Sitou Fe deposit	[Cummingtonite] wrgis.wr.usgs.gov (2004)
Lan County ⓘ Yuanjiacun Fe deposit	[Cummingtonite] wrgis.wr.usgs.gov (2004)
Taiyuan Loufan Co. ⓘ Jianshan Fe deposit	[Grunerite] Yang Ding et al. (1998)
Xinzhou Dai Co. ⓘ Shanyangping Fe deposit	[Cummingtonite] wrgis.wr.usgs.gov (2004)
Fanshi Co. ⓘ Yangchaoping Fe deposit	[Cummingtonite] wrgis.wr.usgs.gov (2004)
Wutai Co. ⓘ Baizhiyan Fe-Au deposit	[Grunerite] wrgis.wr.usgs.gov (2004)
Xinjiang Ili Kazakh Autonomous Prefecture Altay Prefecture (Aletai Prefecture) Fuyun Co. (Koktokay Co.) Kuwei river valley ⓘ Kuwei Cu-Ni deposit	[Cummingtonite] Zhaochong Zhang et al. (2008)
ⓘ Sawusi Pb-Zn deposit	[Grunerite] Liu et al. (2012)
Yunnan Baoshan Longyang District ⓘ Jinchanghe Mine	[Grunerite] Hua Huang et al. (2014)
Dêqên Autonomous Prefecture Dêqên County (Deqin Co.; Diqing Co.) ⓘ Yangla Cu-Zn deposit (Yargla Cu-Zn deposit; Yagla Cu-Zn deposit; Yagra Cu-Zn deposit)	[Grunerite] Deng et al. (2024)
Shangri-La County ⓘ Langdu Mine (Langdou Mine)	[Grunerite] Tao Ren et al. (2013)
Honghe Jinping County ⓘ Baimazhai Ni-Cu-(PGE) deposit	[Cummingtonite] Wang et al. (2006)
Czech Republic
Hradec Králové Region Trutnov District Malá Úpa ⓘ Žacléřské boudy	[Cummingtonite] Mochnacka et al. (2002)
Karlovy Vary Region Karlovy Vary District Boží Dar Zlatý Kopec ⓘ Zlatý Kopec skarn deposit	[Cummingtonite, Grunerite] Josef Vajdak (2002)
Olomouc Region Jeseník District Javorník Horní Hoštice ⓘ Iron deposit	[Grunerite] Zimák (2008)
Pardubice Region Pardubice District ⓘ Chvaletice	[Cummingtonite] Prachař +7 other references
South Moravian Region Brno-Country District Přibyslavice ⓘ Radoškov	[Grunerite] Víšková E. et al. (2013)
Dominican Republic
María Trinidad Sánchez Province Río San Juan ⓘ Río San Juan Complex	[Cummingtonite] Saumur et al. (2013)
Egypt
Red Sea Governorate Wadi Allaqi District Wadi Haimur ⓘ Abu Swayel Cu-Ni deposit	[Cummingtonite] Helmy et al. (1995)
Ethiopia
Oromia Region West Welega Zone Gimbi ⓘ Yubdo District (Joubdo District; Youbdo District; Joubda District)	[Cummingtonite] Mogessie (2003)
Eurasian Plate
North China Craton ⓘ Southern Jilin Complex	[Cummingtonite] Lu et al. (2026)
Finland
Kanta-Häme Hämeenlinna Kalvola ⓘ Nappikallio	[Cummingtonite] Aumo
Lapland Sodankylä Kevitsansarvi (Keivitsansarvi) ⓘ Kevitsa Ni-Cu-PGE mine	[Cummingtonite, Grunerite] Le Vaillant et al. (2016)
Ylitornio ⓘ Rompas	[Cummingtonite] Molnár et al. (2017)
North Karelia ⓘ Ilomantsi	[Grunerite] Hytönen (1999)
ⓘ Outokumpu mining district	[Cummingtonite] Peltonen et al. (2008)
North Ostrobothnia Ii Kuivaniemi ⓘ Kompsa	[Cummingtonite] Geological Survey of Finland 2007 ...
ⓘ Kylmäkangas	[Cummingtonite] Geological Survey of Finland 2007 ...
North Savo Keitele ⓘ Kangasjärvi deposit (Kotilahti 1)	[Cummingtonite] Mäki (1997)
Kiuruvesi ⓘ Ruostesuo Mine	[Cummingtonite] Geological Survey of Finland ...
ⓘ Vuohtojoki deposit	[Cummingtonite] Mäki (1997)
Leppävirta ⓘ Kotalahti mine	[Cummingtonite] Papunen et al. (1985)
Pirkanmaa Akaa ⓘ Kylmäkoski Ni-Cu mine	[Cummingtonite] Papunen (1985)
South Karelia Lappeenranta ⓘ Ihalainen limestone quarry	[Cummingtonite] Hytönen (1999)
Taipalsaari ⓘ Telkkälä Ni mine	[Cummingtonite] Geological Survey of Finland 2008. ...
South Ostrobothnia Kauhajoki ⓘ Kauhajärvi	[Cummingtonite] Kärkkäinen et al. (1999)
Seinäjoki-Lapua ⓘ Vittinki Mn-Fe formation	[Grunerite] Mancini et al. (2000)
South Savo Rantasalmi ⓘ Pirilä	[Cummingtonite] Eilu (2003)
Southwest Finland Salo Kisko ⓘ Liipola-N	[Cummingtonite] Geological Survey of Finland Liipola-N ...
Suomusjärvi ⓘ Salittu	[Grunerite] Niskanen (2014)
France
Brittany Côtes-d'Armor Saint-Brieuc Saint-Quay-Portrieux ⓘ Gabbro-diorite intrusion	[Cummingtonite]
Morbihan Lorient Groix Primiture ⓘ Le Rolaz	[Grunerite] Chauris (2014)
Corsica Corse-du-Sud Ajaccio Tolla ⓘ Cauro-Bastelica Complex	[Grunerite] Bonin et al. (1972) +3 other references
Martinique Arrondissement of Le Marin Les Trois-Îlets ⓘ Gros Îlet	[Cummingtonite]
Arrondissement of Saint-Pierre Le Morne-Vert ⓘ Pitons du Carbet	[Cummingtonite] D'Arco et al. (1985)
New Caledonia Northern Province Ouégoa ⓘ Balade Mine	[Grunerite] Briggs (1975)
Occitanie Hautes-Pyrénées Argelès-Gazost ⓘ Gavarnie-Gèdre	[Cummingtonite] Arliguie M collection
Pierrefitte-Nestalas Pierrefitte ⓘ Pierrefitte Mine	[Grunerite] Warren (1931)
ⓘ Aure Valley	[Cummingtonite] De Ascenção Guedes et al. (2002)
Provence-Alpes-Côte d'Azur Hautes-Alpes Briançon Abriès-Ristolas ⓘ Petit Belvedère du Viso	[Cummingtonite] Abdel-Karim et al. (1989)
Var Brignoles Les Mayons ⓘ Rascas - Valpayette Mines	[Grunerite] Mari et al. (1979)
Toulon ⓘ Collobrières	[Grunerite] Lacroix (1886)
ⓘ Serevengude ravine	[Grunerite] Warren (1931)
ⓘ Vaubarnier mine	[Grunerite] Mari et al. (1979)
Georgia
Samegrelo-Zemo Svaneti Mestia District ⓘ Mulkhura River Valley	[Cummingtonite] Kumladze et al. (2024)
Germany
Saxony Erzgebirgskreis Schwarzenberg ⓘ Hämmerlein deposit	[Grunerite] Lefebvre et al. (2017)
Görlitz District Vierkirchen Döbschütz Arnsdorf-Melaune Quarry ⓘ Melaune Quarry	[Grunerite] Witzke et al. (2012)
Ghana
Oti Region ⓘ Akokrowa-Asukawkaw-Okanease range	[Cummingtonite] Addae et al. (2026)
Western Region Tarkwa ⓘ Nsuta Mine (Insuta Mine; Nsuta-Gaywin Manganese concession; Nsuta-Wassaw)	[Cummingtonite] AmMin 46:642
Greece
Peloponnese Argolis ⓘ Ermioni VMS deposit	[Grunerite] Tombros et al. (2022)
South Aegean Paros Paros Vounia Lefkon ⓘ Thapsana skarn	[Cummingtonite] Tombros et al. (2023)
Greenland
Avannaata ⓘ Niaqonarkavsak	[Cummingtonite, Grunerite] Mott et al. (2013)
Northeast Greenland National Park Danmarkshavn ⓘ Danmarkshavn eclogites ?	[Cummingtonite] Cao (2016)
Sermersooq Nuuk ⓘ Isua Greenstone Belt (Isua Supercrustal Belt)	[Cummingtonite] Dymek (1987) +1 other reference
ⓘ Malene belt	[Grunerite] Uitterdijk Appel (1986)
ⓘ Qeqertarsuatsiaat area	[Cummingtonite] Petersen et al. (1993)
Allumersat ⓘ Sapphirine-occurrence N of Bjørnesund	[Cummingtonite] Friend (1982)
Guyana
Cuyuni-Mazaruni Region ⓘ Cuyuni River	[Cummingtonite] AmMin 57:1540
Hungary
Borsod-Abaúj-Zemplén County Zemplén Mts (Tokaj Mts) ⓘ Sarmatian volcanos	[Grunerite] Kohút et al. (2019)
Fejér County Gárdony District Sukoró ⓘ Rigó Hill	[Grunerite] Sándor et al. (2005)
India
Andhra Pradesh Chittoor District Kolar Gold Fields South Schist Belt ⓘ Mallappakonda deposit	[Cummingtonite, Grunerite] Econ Geol (1994)
Haryana Mahendragarh District ⓘ Bayal-ki-Dhani	[Cummingtonite] Pant et al. (2008)
Jharkhand Palamu District ⓘ Gore Magnetite prospect	[Cummingtonite] Soni et al. (1991)
ⓘ Nawadih Magnetite prospect	[Cummingtonite] Soni et al. (1991)
Karnataka Chikkamagaluru District ⓘ Bababudan BIF belt	[Cummingtonite, Grunerite] Pichamuthu (1950)
Western Ghat region ⓘ Kudremukh (Kuduremukha)	[Cummingtonite, Grunerite] Khan et al. (1992)
Chitradurga District ⓘ Chikkasiddavanahalli hill range	[Grunerite] Raju et al. (2006) +1 other reference
Kolar District Kolar Gold Fields ⓘ Sakarsanahalli	[Cummingtonite] Narayanan Kutty et al. (1977)
Tumkur District ⓘ Huliyar	[Grunerite] Nadagouda et al. (1984)
Rajasthan Jaipur district ⓘ Saladipura Cu-Zn deposit	[Cummingtonite] Sarkar et al. (1980)
Sikar District Khetri ⓘ Khetri Mines (Ketri Mine)	[Cummingtonite, Grunerite] Mineralogical Magazine (1967) +1 other reference
Jhunjhunu District ⓘ Madan-Kudan deposit	[Cummingtonite, Grunerite] Baidya et al. (2018)
Jodhpur Division Sirohi District ⓘ Deri-Ambaji Zn-Pb-Cu deposit	[Cummingtonite] Deb (1980)
ⓘ Ambaji deposit	[Cummingtonite] Deb (1980)
ⓘ Deri deposit	[Cummingtonite] Deb (1980) +1 other reference
Udaipur Division Udaipur District ⓘ Newania carbonatite-fenite complex	[Cummingtonite] Singh et al. (2023)
Tamil Nadu Namakkal District Nainamalai Adivaram ⓘ Nainarmalai hill	[Grunerite] N. Subba Reddy (1982)
Thiruvannaamalai district ⓘ Banded iron formation (BIF)	[Grunerite] N. Subba Reddy (1989)
Indonesia
Papua Province Mimika Regency Gunung Bijih District ⓘ Big Gossan Mine	[Cummingtonite] Econ Geol (1997)
Italy
Aosta Valley Saint-Marcel ⓘ Servette-Chuc mining complex	[Cummingtonite] Martin et al. (1989)
Piedmont Verbano-Cusio-Ossola Province Montescheno ⓘ I Mondei (Ca' Mondei)	[Cummingtonite] Piccoli et al. (2007)
Ornavasso ⓘ Val Buona (Val Bona)	[Cummingtonite] Boriani A. (1965) +3 other references
Sardinia South Sardinia Province Arburese ⓘ Arbus Pluton (Arburese Pluton)	[Cummingtonite] Bosi et al. (2018)
Japan
Fukushima Prefecture Date District Kawamata Iizaka Village (Iisaka) ⓘ Suishoyama pegmatite (Suishouyama; Suisyoyama; Suishyoyama)	[Grunerite] Excalibur Mineral Company specimen
Hokkaidō Prefecture Oshima Subprefecture Futami District Yakumo Kumaishi ⓘ Tatehira mine	[Cummingtonite] Kobayashi H (1977) +1 other reference
Hakodate City ⓘ Oono river alluvials	[Cummingtonite] Dr Kazumi Yokoyama analyses
Iwate Prefecture Kamaishi City ⓘ Kamaishi mine	[Grunerite]
ⓘ Shinyama deposit	[Cummingtonite, Grunerite] Uchida (1983)
Kunohe-gun Noda ⓘ Noda-Tamagawa mine	[Cummingtonite] - (n.d.) +4 other references
Mie Prefecture Nabari City ⓘ Nabari mine	[Cummingtonite, Grunerite] 奥村滋. (1986)
Miyagi Prefecture Shibata District Kawasaki ⓘ Adachi	[Cummingtonite] Matsubara (2003)
Miyazaki Prefecture Nishiusuki District Hinokage ⓘ Shimozuru mine	[Grunerite] - (n.d.)
Takachiho ⓘ Morowaku mine	[Cummingtonite] Fuzimoto (2006)
Oita Prefecture Bungo-Ono City ⓘ Obira Mine	[Grunerite] Masutomi Museum specimens
Osaka Prefecture Higashiosaka City ⓘ Mount Ikoma	[Cummingtonite] Nishiyama (1983)
ⓘ Wakagashi	[Cummingtonite] Aikawa (1979)
Shiga Prefecture Konan City Ishibe ⓘ Ishibe mine	[Grunerite] Masutomi Museum specimens +1 other reference
Shizuoka Prefecture Fuji City Fujikawa-cho ⓘ Fuji river alluvials (Fujikawa bridge)	[Cummingtonite] Analyses by Dr Kazumi Yokoyama
Hamamatsu City ⓘ Tenryuu river alluvials (Tenryugawa)	[Cummingtonite] Analyses by Dr Hideki Masago
Shimada City ⓘ Ooi river alluvials (Ooikawa; Oikawa)	[Cummingtonite] Analyses by Dr Hideki Masago
Tokyo Metropolis Ōshima Subprefecture Niijima island ⓘ Rhyolite diggings (Liparite quarry; Kohgaseki-saikutsujo)	[Cummingtonite] photo in: Koubutsu Doshikai (2017)
Yamanashi Prefecture ⓘ Fuchisaka pass	[Cummingtonite] Kato (2009)
Otsuki City ⓘ Ougiyama	[Cummingtonite] Akira Kato (2011)
Kazakhstan
Aktobe Region Kargaly District ⓘ Mamyt	[Grunerite] Bespaev et al. (n.d.)
Kosovo
Ferizaj District Štrpce (Shtërpcë) ⓘ Brezovica	[Cummingtonite] Lauf (2013)
Libya
Kufra District ⓘ Jebel Arkenu	[Cummingtonite] GOUDARZI. G.H. (1970)
Madagascar
Betsiboka ⓘ Maevatanana District	[Cummingtonite, Grunerite] Behier (1963)
Mauritania
Inchiri Region Akjoujt (Akjout; Fort Repoux) ⓘ Akjoujt Mine (Guelb Moghrein Mine)	[Cummingtonite, Grunerite] Denver Region Exploration Geologists ...
ⓘ Guelb Moghrein	[Cummingtonite, Grunerite] Kolb et al. (2006)
Mexico
Chihuahua Aquiles Serdán Municipality ⓘ Santa Eulalia Mining District	[Cummingtonite] Megaw (2023)
Namibia
Erongo Region Dâures Constituency Sandamap North Farm 115 ⓘ Sandamap Noord gold prospect	[Grunerite] Steven et al. (1993)
New Zealand
ⓘ Auckland Region	[Cummingtonite] Railton et al. (1990)
Bay of Plenty Region Mayor Island (Tuhua) ⓘ Omapu Bay (Western Bay)	[Cummingtonite] NZJGG
ⓘ Opo Bay (South East Bay)	[Cummingtonite] NZJGG
ⓘ Taratimi Bay (Crater Bay)	[Cummingtonite] NZJGG
Rotorua District ⓘ Okataina	[Cummingtonite] Railton et al. (1990)
ⓘ Mount Tarawera	[Grunerite] Collection of RJ Martin inferred from ...
Southland Region Invercargill City ⓘ Bluff	[Cummingtonite] Service (1937)
Southland District ⓘ Stewart Island	[Cummingtonite] Railton et al. (1990)
Waikato Region Taupo District Lake Taupo ⓘ 3 Mile Bay ?	[Grunerite] Collection of RJ Martin
ⓘ 4 Mile Bay ?	[Grunerite] Janeczek (1989)
ⓘ Whakaipo Bay	[Grunerite] Collection of RJ Martin correlated to ...
ⓘ Wharewaka	[Grunerite] Martin et al. (2016)
ⓘ Tongariro Alpine Crossing Northern Circuit	[Cummingtonite] Topping et al. (1973)
ⓘ West Coast Region	[Cummingtonite] Railton et al. (1990)
Westland District Ross ⓘ Mikonui River	[Cummingtonite] Mason (1953)
ⓘ Te Aroha Station	[Cummingtonite] Mason et al. (1)
Nigeria
Zamfara Maru ⓘ Bingi BIF formation	[Cummingtonite, Grunerite] Mücke et al. (2015)
Norway
Agder Flekkefjord ⓘ Åna-Sira	[Cummingtonite] Barton et al. (1984)
Gjerstad ⓘ Gjerstadveien roadcut	[Cummingtonite] Maijer et al. (1987)
Vennesla ⓘ Kjåvann Pyrite Occurrence	[Cummingtonite] Markus Reime collection +1 other reference
Innlandet Tynset Kvikne Mines ⓘ Dals Mine	[Cummingtonite] Nilsen et al. (1972)
ⓘ Gjøkåsen Prospect	[Cummingtonite] Nilsen et al. (1972)
ⓘ Kojan Prospects	[Cummingtonite] Nilsen et al. (1972)
ⓘ Midtre Berstjern Prospect	[Cummingtonite] Nilsen et al. (1972)
ⓘ Nordre Berstjern Prospect	[Cummingtonite] Nilsen et al. (1972)
ⓘ Søndre Berstjern Prospect	[Cummingtonite] Nilsen et al. (1972)
Møre og Romsdal Volda ⓘ Hovdi	[Cummingtonite] Eskola (1921)
Nordland Hemnes Bleikvasslia ⓘ Bleikvassli Mine	[Grunerite] Rosenberg et al. (2000)
Vågan ⓘ Matmora Iron Mine	Andresen et al. (2023)
Vefsn Husvika ⓘ Husvika Deposit	[Cummingtonite, Grunerite] Geological Survey of Norway. The Ore ...
Rogaland Sauda ⓘ Birkeland mines (Sauda mines)	[Cummingtonite] Carstens (1919) +2 other references
Telemark Tokke ⓘ Kaldevassdalen	[Cummingtonite] Nordrum et al. (1981)
Troms og Finnmark ⓘ Sørøya	[Cummingtonite] Bøe (2001)
Trøndelag Holtålen Haltdalen ⓘ Rødhammeren Mine	[Cummingtonite] Nilsen (1971)
Oppdal ⓘ Vinstradalen	[Cummingtonite] Witsø (1995)
ⓘ Vinstra River skarn locality	[Grunerite] Witsø (2005)
Orkland Meldal ⓘ Kråkhaugen Quarry	[Grunerite] Jørgensen et al. (2001) +1 other reference
Vestland Stad ⓘ Selje	[Cummingtonite] Lappin et al. (1978)
Papua New Guinea
Central Province ⓘ Doriri Creek deposit	[Cummingtonite] Gonzalez-Alvarez et al. (2013)
Philippines
Luzon Central Luzon Region ⓘ Mount Pinatubo	[Cummingtonite] Fire and Mud: Eruptions and Lahars of ... +1 other reference
Poland
Lower Silesian Voivodeship Karkonosze County Gmina Stara Kamienica ⓘ Wojcieszyce	[Cummingtonite] Lis et al. (1986)
Portugal
Vila Real ⓘ Vila Real	[Grunerite] Nuno Bento Sousa.
Campeã ⓘ Vila Cova Mine	[Grunerite] Nuno Bento Sousa.
ⓘ Marão Mines	[Grunerite]
Romania
Maramureș County Târgu Lăpuș ⓘ Răzoare	[Cummingtonite, Grunerite] HÎRTOPANU et al. (2025)
Suceava County Cârlibaba Cârlibaba ⓘ Dadu Mn deposit	[Cummingtonite] Hârtopanu et al. (1996) +1 other reference
Iacobeni ⓘ Arșița mine	[Cummingtonite, Grunerite] minerals-of-the-carpathians.eu (2008)
Tolovanu ⓘ Tolovanu (Tolovan) Mn deposit	[Grunerite] Hîrtopanu (1997) +1 other reference
Russia
Belgorod Oblast ⓘ Gostishchevo Fe deposit	[Cummingtonite] Belykh et al. (2007)
Kursk Magnetic Anomaly group ⓘ Lebedinskoe Fe deposit	[Grunerite] elibrary.lt (n.d.)
ⓘ Oskol Fe deposit	[Cummingtonite] Belykh et al. (2007)
ⓘ Stoilinskoe Fe deposit	[Cummingtonite] Belykh et al. (2007)
Chelyabinsk Oblast Miass ⓘ Kisegach massif	[Cummingtonite] Korinevsky et al. (2021)
Verkhny Ufaley Ufaley District (Ufalei District) ⓘ Ufalei Ni deposit	[Cummingtonite] Talovina et al. (2003)
Jewish Autonomous Oblast ⓘ Kaylan Fe-Mn deposit	[Grunerite] Berdnikov et al. (2023)
ⓘ Kostenga Fe-Mn deposit	[Grunerite] Berdnikov et al. (2023)
ⓘ Poperechny Fe-Mn deposit	[Grunerite] Berdnikov et al. (2023)
Kamchatka Krai Ust-Bolsheretsky District Dukuk Complex (Dukuk Massif) ⓘ Annabergitovaya Schel	[Cummingtonite] Novakov et al. (2021)
ⓘ Kvinum-1 occurrence	[Cummingtonite] Tararin et al. (2007)
ⓘ Kvinum-2 occurrence	[Cummingtonite] Tararin et al. (2007)
Kemerovo Oblast ⓘ Koura River	[Cummingtonite] Zhmodik et al. (2016)
Krasnoyarsk Krai Balakhtinsky District ⓘ Nizhne‐Derbinsk mafic‐ultramafic complex	[Cummingtonite] Yakich et al. (2020)
ⓘ Gorevskoe	[Grunerite, Grunerite var: Amosite] Kovalev et al. (2023)
ⓘ Moscow	[Cummingtonite] Пекин (2010) +1 other reference
Murmansk Oblast ⓘ Lovozero Massif	[Cummingtonite] ...
Olenegorsk ⓘ Olenegorskoe Fe deposit	[Cummingtonite, Grunerite] Golikov et al. (1999)
Pechengsky District ⓘ Kola Superdeep Borehole (SG-3; СГ-3)	[Cummingtonite] Mitrofanov et al. (1990)
Polyarnyy Greater Eastern Litsa ore field ⓘ Uraguba Fe deposit	[Grunerite] Ivanyuk et al. (2008)
ⓘ Maljavr Au occurrence	[Grunerite] Kalinin et al. (2024)
Primorsky Krai Dalnegorsk Urban District ⓘ Dalnegorsk	[Cummingtonite] Grant et al. (2001)
Krasnoarmeysky District Arminsky ore district Vostok ⓘ Vostok-2 Mine	[Cummingtonite] Gvozdev (2001)
Republic of Karelia Kostomuksha City District Kostomuksha Fe deposit ⓘ Kostomuksha Au prospect	[Grunerite] Kuleshevich et al. (2008)
Loukhsky District ⓘ Maisk deposit	[Grunerite] Safonov et al. (2003)
Oulanka plutonic complex Olanga River (Oulanka River) ⓘ Lukkulaisvaara ultrabasic Massif (Lukkulaisvaara pluton; Lukkulaisvaara layered intrusion)	[Cummingtonite] Barkov et al. (2001)
ⓘ Nadezhda PGM deposit	[Cummingtonite] Barkov et al. (2004)
Tedino Dyadino lake ⓘ Dyadina Gora	[Cummingtonite] Pavel M. Kartashov (n.d.)
Pryazhinsky District ⓘ Novye Peski deposit	[Grunerite] Ivashchenko et al. (2018, June)
Suojärvi District ⓘ Kuolisma gabbrodolerite	[Grunerite] Коневин et al. (2020)
ⓘ Sakha	[Cummingtonite] [World of Stones 12:49]
Olyokminsky District ⓘ Tarynnakh deposit	[Cummingtonite] USGS Open File Report 2005-1252 p11
ⓘ Shirokaya Valley	[Cummingtonite] Sklyarov et al. (2023)
Sverdlovsk Oblast ⓘ Nizhnii Tagil	[Cummingtonite] Gregor Borg et al (2001)
Zabaykalsky Krai Tungokochensky District Vershino-Darasunskiy ⓘ Talatui Au deposit	[Cummingtonite] Prokof’ev et al. (2007)
Saint Lucia
Soufrière ⓘ Qualibou de Sainte Lucie caldera	[Cummingtonite] D'Arco et al. (1985)
Slovakia
Banská Bystrica Region Poltár District ⓘ Kokava nad Rimavicou	[Grunerite] Koděra et al. (1986)
Revúca District Šivetice ⓘ Kokava nad Rimavicou	[Grunerite] Konečný et al. (2011)
Bratislava Region Pezinok District Pezinok ⓘ Kolársky vrch deposit	[Cummingtonite, Grunerite] Pauliš
Košice Region Rožňava District Čučma ⓘ Čierna baňa	[Cummingtonite, Grunerite] Radvanec M. and Gonda S. (2020)
ⓘ Dobšiná	[Cummingtonite] Koděra et al. (1986)
Nitra Region Zlaté Moravce District Zlaté Moravce ⓘ Zlaté Moravce-1 well	[Cummingtonite] Šarinová et al. (2018)
South Africa
Gauteng City of Tshwane Metropolitan Municipality ⓘ Vergenoeg Mine	[Grunerite] Cairncross et al. (1995) +1 other reference
KwaZulu-Natal Ugu District Municipality ⓘ Marble Delta	[Cummingtonite] Cairncross et al. (1995)
Limpopo Capricorn District Municipality Lepelle-Nkumpi Local Municipality ⓘ Mount Bollatswhene	[Grunerite, Grunerite var: Amosite] Miyano et al. (1997)
Pietersburg greenstone belt ⓘ Zandrivierspoort Fe deposit	[Grunerite] du Plessis et al. (1997)
Sekhukhune District Municipality Fetakgomo Tubatse Local Municipality ⓘ Penge Mine	[Grunerite, Grunerite var: Amosite] Cairncross et al. (1995) +1 other reference
Waterberg District Municipality Lephalale Local Municipality Lephalale Onverwacht ⓘ Moonlight Fe deposit	[Grunerite] du Plessis et al. (1997)
Thabazimbi Local Municipality Thabazimbi ⓘ Thabazimbi Mine	[Grunerite] Basson et al. (2017)
Northern Cape John Taolo Gaetsewe District Municipality Gamagara Local Municipality Kathu ⓘ Sishen Mine	[Grunerite] SIEMES (2013)
Namakwa District Municipality Khâi-Ma Local Municipality ⓘ Aggeneys	[Grunerite] Cairncross et al. (1995)
ⓘ Black Mountain (Swartberg mine)	[Grunerite] Rudnick et al. (2013) +1 other reference
ⓘ Gamsberg zinc mine	[Grunerite] ...
ZF Mgcawu District Municipality !Kheis Local Municipality ⓘ Kantienpan farm	[Cummingtonite, Grunerite] Rozendaal et al. (2017)
South Korea
South Jeolla Province Gwangyang City ⓘ Paegun-san	[Cummingtonite] Kinosaki (1941)
Spain
Andalusia Almería Serón Jauca Alta ⓘ Cortijo Perpiñán Mine	[Cummingtonite] gr-mulhacen.foroactivo.com (n.d.)
Málaga Mijas ⓘ El Nebral Mine	[Cummingtonite] Oen et al. (1980)
Ojén ⓘ La Concepción mine	[Cummingtonite] Romero Silva (2003) +1 other reference
Sierra Alpujata ⓘ Chromitite outcrops	[Cummingtonite] Oen et al. (1980)
Asturias Ibias ⓘ Ibias district	[Grunerite] Econ Geol (1996)
Catalonia Tarragona Priorat El Molar ⓘ Serrana Mine (Manganese Mine)	[Cummingtonite] Joan Abella i Creus (2012)
Extremadura Badajoz Burguillos del Cerro ⓘ La Herreria Mine ?	[Cummingtonite]
ⓘ La Judia Mine	[Cummingtonite]
Galicia A Coruña Touro Touro Copper Project ⓘ Arienteiro deposit	[Cummingtonite] Williams (1983)
ⓘ Bama deposit	[Cummingtonite] Williams (1983)
Sweden
Dalarna County Avesta ⓘ Möklinta ore field	[Cummingtonite] Jansson (2001)
Falun ⓘ Falun mine	[Cummingtonite] Lasskogen (2010) +1 other reference
ⓘ Kalvbäck mine	[Cummingtonite]
Svärdsjö ⓘ Vintjärn mines	[Cummingtonite]
Hedemora Garpenberg ⓘ Garpenberg Södra Mine	[Cummingtonite] Öhman et al. (2000)
ⓘ Holmgruve ore field	[Cummingtonite, Grunerite]
ⓘ Långvik ore field	[Grunerite]
Ludvika ⓘ Blötberget ore field	[Cummingtonite]
Grängesberg ⓘ Grängesberg mining field	[Cummingtonite] Wilke (1976)
ⓘ Pullero Mines	[Cummingtonite]
ⓘ Håksberg ore field	[Cummingtonite]
ⓘ Ivik ore field	[Cummingtonite]
ⓘ Saxberget ore field	[Cummingtonite]
Smedjebacken Väster Silvberg ⓘ Stollberg orefield	[Grunerite] Jansson et al. (2013) +1 other reference
Gävleborg County Ljusdal ⓘ Los	[Cummingtonite]
ⓘ Mansjöberg Fe Mine	[Grunerite] Stenberg (2002)
Sandviken Årsunda ⓘ Sågmyr mine	[Cummingtonite]
Jönköping County Vetlanda Fröderyd ⓘ Årset silver mine	[Cummingtonite] Wilke (1997)
ⓘ Britta mine	[Cummingtonite] Wilke (1997)
ⓘ Fredriksberg ore field	[Cummingtonite] Wilke (1997)
Örebro County Hällefors Grythyttan ⓘ Brunnsjögruvan	[Cummingtonite, Grunerite] Sundius (1924)
Hällefors silver mines ⓘ Kextjärn mine	[Cummingtonite]
Lindesberg Stråssa ⓘ Stråssa ore field	[Cummingtonite] Geijer (1927)
Ljusnarsberg Kopparberg ⓘ Kaveltorp Mines	[Cummingtonite]
ⓘ Silkesberg ore field	[Grunerite]
ⓘ Nora	[Cummingtonite] Econ Geol (1992)
Rödberg Mines ⓘ Rödbergsgruvan	[Cummingtonite] Gatedal (n.d.)
ⓘ Striberg ore field	[Cummingtonite]
Östergötland County Åtvidaberg ⓘ Åtvidaberg Mining Field	[Cummingtonite]
Motala Tjällmo ⓘ Baggetorp	[Cummingtonite] Gavelin
Skåne County Lund Genarp ⓘ Romeleklint	[Cummingtonite]
Södermanland County Katrineholm Sköldinge ⓘ Kantorp Mines	[Cummingtonite]
ⓘ Stavs Mines	[Cummingtonite]
Nyköping Tunaberg ⓘ Stora Uttersvik	[Cummingtonite]
ⓘ Strömshult Mines	[Cummingtonite, Grunerite]
Stockholm County Norrtälje ⓘ Herräng ore field	[Cummingtonite] Magnusson (1940)
Uppsala County Östhammar Dannemora ⓘ Dannemora Mine	[Cummingtonite]
Värmland County Filipstad ⓘ Gåsborn	[Cummingtonite] Damman (1989)
Långban Ore District ⓘ Lahäll Mines	[Cummingtonite]
Nordmark mining district ⓘ Finnmossen ore field	[Cummingtonite] Magnusson (1929)
ⓘ Finnshytteberg ore field	[Cummingtonite]
ⓘ Äng Mines	[Cummingtonite]
ⓘ Haborshytte ore field	[Cummingtonite] Magnusson (1929)
ⓘ Fredriksbergsgruvan	[Cummingtonite] Magnusson (1929)
ⓘ Sandsjöberg ore field	[Cummingtonite] Magnusson (1929)
ⓘ Taberg ore field (Nordmarks Taberg)	[Cummingtonite] Magnusson (1929)
ⓘ Nordmark Odal Field	[Cummingtonite] Magnusson (1929)
Persberg ⓘ Stor Mine	[Cummingtonite]
Västerbotten County Lycksele ⓘ Svartliden Gold Mine (Svartliden)	[Grunerite] Johan Söderhielm
Malå ⓘ Adakgruvan	[Cummingtonite]
ⓘ Lindsköld Mine (Adak-Lindsköld)	[Cummingtonite] Gavelin (1945)
Västmanland County Fagersta Västanfors ⓘ Hedkärra Mine	[Cummingtonite]
ⓘ Morens Öster Mine	[Cummingtonite]
Skinnskatteberg Riddarhyttan ⓘ Persgruvan	[Grunerite]
Switzerland
Ticino ⓘ Cima di Gagnone	[Cummingtonite] Stalder et al. (1998)
Tanzania
Geita Region Geita District ⓘ Area 3 West	[Grunerite] Kwelwa et al. (2018)
ⓘ Kukuluma Mine	[Grunerite] Kwelwa et al. (2018)
ⓘ Matandani pit	[Grunerite] Kwelwa et al. (2018)
Lindi Region Nachingwea ⓘ Ntaka Hill Project (Nachingwea Nickel Project)	[Cummingtonite] Indiana Resources
UK
England Cornwall St Just ⓘ Botallack	[Grunerite] Golley et al. (1995)
ⓘ Cliff outcrops	[Cummingtonite] Golley et al. (1995)
ⓘ Chycornish Carn (?)	[Grunerite] Tilley (1935)
ⓘ Kenidjack Cliff	[Cummingtonite] Golley et al. (1995)
Scotland Highland Loch Duich ⓘ Sgurr Aoidhe	[Grunerite] Render (n.d.)
Strathpeffer and Lochalsh Wester Ross Glenelg Ratagain Intrusion ⓘ Loch Duich	[Grunerite] Henry (1935) +2 other references
Wester Ross， Strathpeffer and Lochalsh ⓘ Kerry Road Cu-Zn-Au sulphide deposit	[Cummingtonite] Sikazwe et al. (2014)
ⓘ Kerrysdale	[Grunerite] Render (n.d.)
ⓘ Loch Bad An Sgalaig	[Cummingtonite] Render (n.d.)
Lochalsh Dornie ⓘ Creag Reidh Raineach	[Grunerite] Render (n.d.)
Keppoch ⓘ Allt a Mhuilin	[Grunerite] Render (n.d.)
Ukraine
Crimea Alushta ⓘ Ayu-Dag Mountain	[Grunerite] Alexander I. Tischenko (1996)
Dnipropetrovsk Oblast Kryvyi Rih Raion ⓘ Kryvyi Rih	[Cummingtonite] Sośnicka et al. (2026)
Synelnykove Raion ⓘ Dibrova mineral deposit	[Cummingtonite] Poliakovska et al. (2023)
Donetsk Oblast Volnovakha Raion Chlebodarovsk ⓘ Khlebodarov quarry	[Grunerite] Sharygin et al. (2014)
Kirovohrad Oblast Central Ukrainian Uranium Province ⓘ Zhovta Richka deposit	[Grunerite] Cuney et al. (2012)
Kropyvnytskyi Raion ⓘ Klyntsi gold deposit	[Cummingtonite] Alexander Babynin & Eugenia Slivko (1999) +1 other reference
ⓘ Kryvorizkyi Iron Ore Basin (Kryvbas)	[Cummingtonite, Grunerite] Baranov et al. (2009) +1 other reference
Poltava Oblast ⓘ Ferrexpo Yeristovo Mine	[Cummingtonite] Wikipedia
Horishni Plavni ⓘ Ferrexpo Poltava Mine	[Cummingtonite] Wikipedia
Zhytomyr Oblast ⓘ Korosten Raion	[Grunerite] Esipchuk K. (2001)
Zhytomyr Raion Khoroshiv Raion (Volodarsk-Volynskii) ⓘ Volyn Pegmatites	[Grunerite] Shumlyanskyy et al. (2021)
USA
Alabama Chilton County ⓘ Mitchell Dam amphibolite	[Cummingtonite] Cook et al. (1982)
Coosa County ⓘ Mitchell Dam amphibolite	[Cummingtonite] Cook et al. (1982)
Alaska Aleutians East Borough Unalaska Island ⓘ Makushin geothermal area	[Cummingtonite] ...
Arizona Graham County Aravaipa Mining District ⓘ Santa Teresa Mountains	[Grunerite] Anthony et al. (1995)
La Paz County Buckskin Mountains ⓘ Cummingtonite deposit	[Cummingtonite] The-Vug.com Collecting Minerals of La ...
Santa Maria Mining District (Planet Mining District; Swansea Mining District; Bill Williams Mining District) ⓘ BCC Mines ?	[Cummingtonite] Daniel Hummer Collection +1 other reference
Mohave County Hualapai Mountains Hualapai Mining District Pine Peak ⓘ Antler Mine	[Cummingtonite] Galbraith (1959)
Yavapai County Bradshaw Mountains (Bradshaw Range) ⓘ Foy Mine - North of	[Grunerite] Galbraith (1959)
ⓘ Black Hills	[Cummingtonite] AmMin 21:607
California Coastal Range Laytonville ⓘ Laytonville Quarry	[Grunerite] Chesterman (1966b) +3 other references
Kern County Government Peak ⓘ Big Indian Mine (Big Indian deposit)	[Grunerite] Dr. Robert Housley
San Benito County ⓘ Panoche Pass	[Grunerite] Muir Wood (1979)
San Bernardino County Calico Mts (Calico Hills) Calico District (Daggett District; Calico-Daggett area) ⓘ Daggett	[Cummingtonite] Murdoch (1966)
Santa Cruz County Bonny Doon ⓘ Pine Flat Road area	[Cummingtonite] Leo (1967) +2 other references
Sonoma County Coast Range Cazadero ⓘ Ward Creek [1]	[Grunerite] Muir Wood (1979)
Colorado Chaffee County Monarch Mining District ⓘ Cindarella No. 7 claim	[Cummingtonite] Spry et al. (2022)
Sedalia Mining District ⓘ Sedalia Mine (Sedalia Copper Mine)	[Cummingtonite] U.S. Geological Survey Professional ... +1 other reference
Turret Mining District ⓘ Ace High - Jackpot Prospect	[Cummingtonite] Berke et al. (2023)
Clear Creek County ⓘ Idaho Springs Formation	[Cummingtonite] Eckel et al. (1997)
Fremont County Cotopaxi Mining District Cotopaxi Mine Gulch ⓘ Cotopaxi Mine (Cotopaxi lode; Gumaer Mine; Fannie lode; Fannie Mill)	[Cummingtonite] Spry et al. (2022)
ⓘ Devil's Hole Mine	[Cummingtonite] Eckel et al. (1997)
Grape Creek Mining District (Greenhorn Mining District) ⓘ Green Mountain Mine (Copper Boy Mine)	[Cummingtonite] Spry et al. (2022) +1 other reference
ⓘ Lookout Mountain Area	[Cummingtonite] Eckel et al. (1997)
Texas Creek area ⓘ Table Mountain	[Cummingtonite] Eckel et al. (1997)
Twelve Mile Park ⓘ Smiths Gulch	[Cummingtonite] Eckel et al. (1997)
Gilpin County ⓘ Idaho Springs Formation	[Cummingtonite] Eckel et al. (1997)
Gunnison County ⓘ Gold Brick Mining District	[Cummingtonite] Journal of Petrology (1991)
Jackson County Pearl Mining District ⓘ Caprock prospect	[Cummingtonite] Eckel et al. (1997) +2 other references
Jefferson County ⓘ Idaho Springs Formation	[Cummingtonite] Eckel et al. (1997)
Ralston Buttes Mining District ⓘ Schwartzwalder Mine (Ralston Creek Mine)	[Grunerite] Eckel et al. (1997)
ⓘ West Creek	[Grunerite] Eckel et al. (1997)
Larimer County Prairie Divide Mining District (St. Cloud Mining District) ⓘ Copper King Mine (Claims: Black Hawk No. 1; Black Hawk No. 2)	[Cummingtonite] Eckel et al. (1997)
Park County Guffey Mining District ⓘ Betty Mine (Lone Chimney Mine; Betty Lowe)	[Cummingtonite] Spry et al. (2022)
Connecticut Litchfield County ⓘ Salisbury	[Cummingtonite] Robinson (1825) +1 other reference
Middlesex County East Hampton Middle Haddam ⓘ Garnet prospect	[Cummingtonite] Harvard Mineralogical Museum
ⓘ Haddam	[Cummingtonite] Harvard Mineralogical Museum
Haddam Neck ⓘ Amphibole-tourmaline-magnetite locality	[Cummingtonite] Schooner (circa 1985)
ⓘ State Route 9 rock cuts	[Grunerite] Schooner (circa 1985)
Tolland County Willington ⓘ Becker Quarry	[Cummingtonite] Ague (1995)
Georgia DeKalb County ⓘ Norris Lake Dam	[Cummingtonite] Cook (1978)
ⓘ Soapstone Ridge	[Cummingtonite] Van Gosen (2005)
ⓘ Stone Mountain-Lithonia Mining District	[Cummingtonite] Cook (1978)
Fulton County Red Oak ⓘ Welcome-All Recreation Area	[Cummingtonite] Cook (1978)
Idaho Shoshone County Lelande Mining District ⓘ Hercules Mine	[Grunerite] MRDS #10078354
Iowa Sioux County ⓘ Matlock drill core	[Cummingtonite, Grunerite] Windom et al. (1991)
Maine Cumberland County ⓘ Harpswell	[Cummingtonite] King et al. (1994)
ⓘ Bombazine Island	[Cummingtonite] ...
ⓘ Dyer Cove	[Cummingtonite] ...
ⓘ Sebascodegan Island	[Cummingtonite] ...
Knox County ⓘ Vinalhaven	[Cummingtonite] keck.wooster.edu (n.d.)
Warren ⓘ Warren Nickel prospect	[Cummingtonite] W. B. Thompson et al. (2005)
Waldo County Palermo ⓘ Sheepscot Pond locality	[Grunerite] King et al. (1994)
Maryland Baltimore County Bare Hills ⓘ Bare Hills Copper Mine (Smith Avenue Copper Mine)	[Cummingtonite] Rocks & Min.: 21:144-145 +1 other reference
Massachusetts Essex County ⓘ Gloucester	[Grunerite] Gleba (2008)
ⓘ Blackburn Circle locality	[Grunerite] P Cristofono collection
ⓘ Rockport	[Grunerite] Januzzi et al. (1976) +1 other reference
ⓘ Rockport Granite Company quarries	[Grunerite] Palache (1950)
Hampden County Chester ⓘ Chester Emery Mines	[Cummingtonite] Lincks (1978)
Hampshire County Cummington ⓘ Cummingtonite (of Dewey) type locality	[Cummingtonite, Grunerite] American Mineralogist 38:864
ⓘ Powell Road Grunerite locality	[Grunerite] Harvard Museum of Natural History
Plainfield ⓘ Betts Manganese Mines	[Cummingtonite, Grunerite] Quinn (1945)
Michigan Baraga County ⓘ Beaufort Mine (Northrup)	[Grunerite] - (2005)
Imperial Heights ⓘ Norwood Mine	[Grunerite] - (2005)
ⓘ Ohio Mines (Imperial Mine; Webster Mine)	[Grunerite] Morris (1983)
ⓘ Imperial Mine	[Grunerite] Heinrich et al. (2004)
ⓘ Portland Mine	[Grunerite] - (2005)
ⓘ Spurr Mine	[Cummingtonite, Grunerite] Heinrich et al. (2004)
ⓘ Steward Mine (Orleans)	[Grunerite] - (2005)
ⓘ Titan Mine	[Grunerite] - (2005)
Dickinson County ⓘ Felch formation	[Grunerite] Heinrich et al. (2004)
Randville ⓘ Groveland Mine	[Cummingtonite, Grunerite] Morris (1983)
ⓘ Gogebic County	[Grunerite] Heinrich et al. (2004)
ⓘ Iron County	[Grunerite] Heinrich et al. (2004)
Iron River Township ⓘ Badwater greenstone	[Grunerite] Heinrich et al. (2004)
Mansfield Township ⓘ Hemlock Formation	[Grunerite] Heinrich et al. (2004)
ⓘ Mansfield Mine	[Grunerite] - (2005)
ⓘ Sholdeis exploration prospect	[Grunerite] Heinrich et al. (2004)
Mastodon Township ⓘ Riverton iron formation	[Grunerite] Heinrich et al. (2004)
ⓘ Marquette County	[Grunerite] Heinrich et al. (2004)
Champion Township Champion ⓘ Champion Mine	[Cummingtonite, Grunerite] Rocks & Minerals: 61:328. +1 other reference
ⓘ East Mine	[Grunerite] Heinrich et al. (2004)
Ely Township Greenwood ⓘ Greenwood Mine	[Grunerite] Morris (1983)
ⓘ Michigan prospect	[Grunerite] Heinrich et al. (2004)
Humboldt Township ⓘ Mount Humboldt	[Grunerite] Heinrich et al. (2004)
ⓘ Unnamed locality (2)	[Grunerite] Heinrich et al. (2004)
ⓘ Unnamed outcrop (4)	[Grunerite] Heinrich et al. (2004)
Ishpeming ⓘ Lake Bancroft	[Grunerite] Heinrich et al. (2004)
Michigamme Township Michigamme ⓘ Bijiki Schist	[Grunerite] Heinrich et al. (2004)
ⓘ Michigamme Mine	[Cummingtonite, Grunerite] Slaughter (2023)
Negaunee ⓘ Unnamed locality	[Grunerite] Heinrich et al. (2004)
ⓘ Unnamed schist	[Grunerite] Heinrich et al. (2004)
Republic ⓘ Ajibik quartzite	[Grunerite] Heinrich et al. (2004)
Republic Township Republic ⓘ M-95 bridge	[Grunerite] Heinrich et al. (2004)
ⓘ Magnetic Mine	[Grunerite] Heinrich et al. (2004)
ⓘ Republic Mine	[Cummingtonite, Grunerite] Heinrich et al. (2004)
Richmond Township Palmer ⓘ Empire Mine	[Grunerite] Dave Maietta
Tilden Township ⓘ Foster-Lothian area	[Grunerite] Heinrich et al. (2004)
Richmond Township Marquette County ⓘ Palmer	[Grunerite] Heinrich et al. (2004)
Minnesota Crow Wing County Cuyuna North Range ⓘ Milford Mine	[Grunerite] USGS Prof Paper 407
ⓘ Portsmouth Mine	[Grunerite] USGS Prof Paper 407 +1 other reference
Saint Louis County Babbitt ⓘ Northshore Mine (Peter Mitchell Mine; Reserve Mine; Babbitt Mine)	[Cummingtonite, Grunerite] - (2005)
ⓘ Foss Lake prospect	[Grunerite] Frey et al. (2008)
ⓘ LTV Mine (Hoyt Lakes; LTV Steel Mining Company; Erie Mine; Polymet)	[Grunerite] 55TH INSTITUTE ON LAKE SUPERIOR GEOLOGY (2009)
Missouri Washington County ⓘ Pea Ridge Mine	[Grunerite] Sherwood et al. (1998)
Montana Beaverhead County Dillon Mining District (Carter Creek Mining District; Frying Pan Basin Mining District) ⓘ Elk Gulch Mine	[Cummingtonite] David Frank and Lorraine Edmond (2001)
Gallatin County Spanish Peaks Primitive Area ⓘ Table Mountain Prospect	[Cummingtonite] - (2005)
Madison County ⓘ Carter Creek	[Cummingtonite] Immega et al. (1976)
Cherry Creek Mining District ⓘ Unnamed Kyanite Deposit (MRDS - 10246044)	[Cummingtonite] Tucker (n.d.) +1 other reference
ⓘ Gilliam prospect	[Grunerite] Gobla (2012)
Park County Crevasse Mining District (Crevice Mining District; Jardine Mining District) ⓘ Crevasse Mountain Mine (Jardine; Mineral Hill Mine; TVX Mineral Hill 0300670001; Jardine Mine; Jardine Jv)	[Cummingtonite, Grunerite] Econ Geol (1997)
ⓘ Jardine Mining District (Sheepeater Mining District; Bear Gulch Mining District)	[Cummingtonite] Koschmann et al. (1968)
ⓘ Stillwater Complex	[Cummingtonite] USGS Prof Paper 999
New Hampshire Carroll County Jackson ⓘ Jackson Falls	[Grunerite] ...
ⓘ Cheshire County	[Cummingtonite] AmMin 85:1606­1616
ⓘ Walpole	[Cummingtonite] Morrill
New Jersey Sussex County Franklin ⓘ Franklin Mine	[Grunerite] Cianciulli (2004)
Ogdensburg Sterling Hill ⓘ Sterling Mine	[Cummingtonite] Dunn (1995)
New Mexico ⓘ Luna County	[Cummingtonite] Northrop et al. (1996)
Tres Hermanas Mountains Tres Hermanas Mining District South Peak (South Sisters Peak) ⓘ Spurrite skarn lens	[Cummingtonite] NMGS 21st Field Conference
ⓘ Manzano Mountains	[Cummingtonite] Northrop et al. (1996)
New York ⓘ New York City	[Cummingtonite] John H. Betts (2009)
ⓘ St. Lawrence County	[Cummingtonite] gsa.confex.com (2003)
Edwards ⓘ Talcville	[Cummingtonite] NY State Museum spec. no. 18106
Fowler Balmat ⓘ American #1 Talc Mine	[Cummingtonite] Lupulescu et al. (2011)
ⓘ North Carolina	[Cummingtonite, Grunerite]
ⓘ Alleghany County	[Cummingtonite] Stapor
Sparta Bald Knob ⓘ Bald Knob deposit	[Cummingtonite, Grunerite] Winter et al. (1981)
ⓘ Ashe County	[Cummingtonite] Stapor
Buncombe County ⓘ Thomas Mine (Balsam Gap kyanite location; Parkway kyanite location)	[Cummingtonite] Wood (1996)
Iredell County Statesville ⓘ Unnamed Gneiss Quarry DL-005 (MRDS - 10106107)	[Grunerite] - (n.d.)
Macon County Cowee Valley Ellijay Mining District Franklin ⓘ Winding Stair Gap Roadcut	[Cummingtonite] Absher and McSween H.Y Jr
ⓘ Mitchell County	[Cummingtonite] Swanson (2008)
ⓘ Watauga County	[Cummingtonite] Stapor
Pennsylvania Delaware County Concord Township ⓘ Cambridge Downs ?	[Cummingtonite] Gordon - Min. Penn. (1922)
Puerto Rico Utuado ⓘ Tanama Cu deposit	[Cummingtonite] Cox (1985)
South Dakota Custer County Custer Mining District Custer Beecher Lode ⓘ Beecher No. 3	[Grunerite] Redden (1959) +1 other reference
Unorganized mining district [1] ⓘ Grand Junction and Hartford Group	[Grunerite] USGS Prof Paper 297F
ⓘ Newark Group	[Cummingtonite] - (2005)
Lawrence County Galena Mining District Roubaix ⓘ Poorman formation	[Grunerite] Roberts et al. (1965)
Lead Mining District Lead ⓘ Homestake Mine	[Cummingtonite, Grunerite] Am Min (1936)
Rochford Mining District ⓘ Montana Mine	[Cummingtonite] - (2005)
Pennington County Keystone Gold Mining District ⓘ Bullion-Columbia Mine	[Cummingtonite] - (2005)
Keystone Mining District Keystone ⓘ Edison Mine	[Grunerite] Am Min 73:3-4 pp 324-337
ⓘ Rochford Mining District	[Cummingtonite] Koschmann et al. (1968)
ⓘ Black Eagle Mine (Blair Group)	[Cummingtonite] - (2005)
ⓘ Gold King Mine (Gordelia Mine)	[Cummingtonite] - (2005)
ⓘ Golden West Mine (Benedict Property)	[Cummingtonite] - (2005)
ⓘ King of the West (North Star)	[Cummingtonite] - (2005)
ⓘ Mary Belle Mine	[Cummingtonite] - (2005)
ⓘ Montezuma Mine (Montezuma Nos. 3 to 7; Red Jim; New Montezuma)	[Cummingtonite] - (2005)
ⓘ Standby mine	[Cummingtonite] - (2005)
Tennessee Polk County ⓘ Ducktown Mining District	[Cummingtonite] Paris (2011)
Vermont Orleans County ⓘ Tillotson Peak area	[Cummingtonite] Rocks & Min. Vol. 71 (1996)
Rutland County Shrewsbury ⓘ Cuttingsville	[Grunerite] Cuttingsville Complex +1 other reference
ⓘ Windham County	[Cummingtonite] Rocks & Min. Vol. 71 (1996)
Windsor County Chester ⓘ Carlton Quarry	[Cummingtonite] Veblen et al. (1978) +1 other reference
Norwich Mt Cube Quadrangle ⓘ Post Pond Volcanics	[Cummingtonite] SPEAR (1982)
ⓘ Virginia	[Cummingtonite] Dietrich (1990)
Albemarle County North Garden ⓘ Unnamed Fe-Zeolite occurrence [1]	[Grunerite] Dietrich (1990)
Washington Snohomish County Index Mining District Beckler River ⓘ Johnson Ridge Cummingtonite Occurrence	[Cummingtonite] Cannon (1975)
Wisconsin ⓘ Ashland County	[Grunerite] Laybourn +1 other reference
ⓘ Ballou Creek	[Grunerite] Cordua (1998)
Gogebic Range ⓘ Hanna test pit	[Grunerite] Laybourn
Mount Whittlesey ⓘ Berkshire Mine (Pioneer Mine; Hoppenyan exploration)	[Grunerite] Cordua (1998)
ⓘ Markle Drive outcrops	[Grunerite] Cordua (1998)
ⓘ Mineral Lake lookout tower	[Grunerite] Cordua (1998)
Eau Claire County ⓘ Big Falls	[Cummingtonite] Myers et al. (1974)
Florence County Menominee Range ⓘ Larsen Exploration Prospect	[Grunerite] Dutton et al. (1971)
ⓘ Pine Creek reservoir	[Grunerite] Cordua (1998)
Jackson County ⓘ Jackson County Iron Mine (Black River Falls Mine; Ron Mound; Seven Mile Mound Mine; Red Mound)	[Cummingtonite, Grunerite] Kimball +1 other reference
Marinette County ⓘ Duval massive sulfide deposit	[Cummingtonite, Grunerite] Hollister (1982)
Oconto County ⓘ Mountain	[Cummingtonite] Cordua (1998)
Oneida County ⓘ Lynne deposit	[Cummingtonite] Adams (1996)
Rusk County ⓘ Eisenbrey deposit (Thornapple deposit) ?	[Grunerite] May (1996)
Shawano County Tigerton ⓘ Tigerton anorthosite outcrops	[Cummingtonite] Cordua (1998)
Wyoming Albany County Medicine Bow Mountains Keystone Mining District - Douglas Creek Mining District ⓘ Douglas Mine (Morning Star claims 1868 & 1871; Douglas Gold and Copper Company)	[Cummingtonite] Loucks (1976)
Fremont County ⓘ South Pass-Atlantic City Mining District	[Grunerite] McGowan et al. (2026)
Atlantic City ⓘ Atlantic City Mine	[Grunerite] Hausel et al. (2001)
Zambia
North-Western Province Solwezi District ⓘ Kansanshi Mine	[Cummingtonite, Grunerite] MacIntyre (2019)
Zimbabwe
Matabeleland North Hwange District Dete (Dett) ⓘ Gwayi River Mine	[Cummingtonite] Bahnemann
Matabeleland South Gwanda - Filabusi District ⓘ Vubachikwe Mine	[Grunerite] Saager et al. (1989)
Midlands Gokwe North District ⓘ Sanyati Mine	[Cummingtonite] Frei (2005)
Mberengwa District Sandawana-Belingwe District ⓘ Sandawana Mine (Zeus mine)	[Cummingtonite, Grunerite] - (2002) +1 other reference