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Matildite

Big Photo

Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany
© D. Schläfli

Show Matildite Photos (14)
Formula:
AgBiS
 
2
System:HexagonalColour:Iron-black to gray
Hardness:2½
Name:From the type locality, the Matilda Mine, near Morococha, Peru.
Dimorph of:Schapbachite


Matildite group

Classification of Matildite

IMA status:Approved
Strunz 8th edition ID:2/C.16-30
Nickel-Strunz 10th (pending) edition ID:2.JA.20

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
A : Galena derivatives with little or no Pb
Dana 8th edition ID:3.7.1.1

3 : SULFOSALTS
7 : ø = 2
Hey's CIM Ref.:5.2.17

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
2 : Sulpharsenites etc. of Ag
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Type Occurrence of Matildite

Type Locality:Matilda Mine, Morococha District, Yauli Province, Junín Department, Peru
Year of Discovery:1883

Physical Properties of Matildite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Iron-black to gray
Streak:Light gray
Hardness (Mohs):2½
Tenacity:Brittle
Cleavage:None Observed
Fracture:Irregular/Uneven
Density (measured):6.9 g/cm3
Density (calculated):6.9 g/cm3

Crystallography of Matildite

Crystal System:Hexagonal
Cell Parameters:a = 8.12Å, c = 19.02Å
Ratio:a:c = 1 : 2.342
Unit Cell Volume:V 1,086.06 ų (Calculated from Unit Cell)
Morphology:Rarely as indistinct prismatic crystals, striated [001]. Massive, granular.

Optical Data of Matildite

Type:Anisotropic
Anisotropism:Weak
Colour in reflected light:White
Pleochroism:Weak

Chemical Properties of Matildite

Formula:
AgBiS
 
2
Essential elements:Ag, Bi, S
All elements listed in formula:Ag, Bi, S

Relationship of Matildite to other Species

Related to:
  • Matildite group
    • Related Minerals - Nickel-Strunz Grouping):
    2.JA.05Benjaminite
    (Ag,Cu)
     
    3
    		(Bi,Pb)
     
    7
    		S
     
    12
    2.JA.05Borodaevite
    Ag
     
    5
    		(Bi,Pb,Fe)
     
    8
    		(Sb,Bi)
     
    2
    		S
     
    17
    2.JA.05Cupropavonite
    AgCu
     
    2
    		PbBi
     
    5
    		S
     
    10
    2.JA.05Makovickyite
    Ag
     
    1.5
    		Bi
     
    5.5
    		S
     
    9
    2.JA.05Mummeite
    Ag
     
    2
    		CuPbBi
     
    6
    		S
     
    13
    2.JA.05Pavonite
    (Ag,Cu)(Bi,Pb)
     
    3
    		S
     
    5
    2.JA.05Grumiplucite
    HgBi
     
    2
    		S
     
    4
    2.JA.05Mozgovaite
    PbBi
     
    4
    		(S,Se)
     
    7
    2.JA.05Cupromakovickyite
    Cu
     
    8
    		Pb
     
    4
    		Ag
     
    2
    		Bi
     
    18
    		S
     
    36
    2.JA.05Kudriavite
    (Cd,Pb)Bi
     
    2
    		S
     
    4
    2.JA.05IMA2005-036
    Ag
     
    3
    		Cu
     
    8
    		Pb
     
    4
    		Bi
     
    19
    		S
     
    38
    2.JA.10Cuprobismutite
    Cu
     
    10
    		Bi
     
    12
    		S
     
    23
    2.JA.10Hodrušhite
    Cu
     
    8
    		Bi
     
    12
    		S
     
    22
    2.JA.10Padĕraite
    Cu
     
    5.9
    		Ag
     
    1.3
    		Pb
     
    1.6
    		Bi
     
    11.2
    		S
     
    22
    2.JA.10Pizgrischite
    Cu
     
    17
    		Bi
     
    17
    		S
     
    35
    2.JA.10Kupčíkite
    (Cu,Fe)
     
    4
    		Bi
     
    5
    		S
     
    10
    2.JA.15Schapbachite
    AgBiS
     
    2
    2.JA.15Cuboargyrite
    AgSbS
    2.JA.20Bohdanowiczite
    AgBiSe
     
    2
    2.JA.20Volynskite
    AgBiTe
     
    2
    Related Minerals - Hey's Index Grouping:
    5.2.1Smithite
    AgAsS
     
    2
    5.2.2Trechmannite
    AgAsS
     
    2
    5.2.3Proustite
    Ag
     
    3
    		AsS
     
    3
    5.2.4Xanthoconite
    Ag
     
    3
    		AsS
     
    3
    5.2.5Pearceite
    (Ag,Cu)
     
    16
    		(As,Sb)
     
    2
    		S
     
    11
    5.2.6Pearceite-T2ac
    (Ag,Cu)
     
    16
    		(As,Sb)
     
    2
    		S
     
    11
    5.2.7Argentotennantite
    (Ag,Cu)
     
    10
    		(Zn,Fe)
     
    2
    		(As,Sb)
     
    4
    		S
     
    13
    5.2.8Miargyrite
    AgSbS
     
    2
    5.2.9Pyrargyrite
    Ag
     
    3
    		SbS
     
    3
    5.2.10Pyrostilpnite
    Ag
     
    3
    		SbS
     
    3
    5.2.11Stephanite
    Ag
     
    5
    		SbS
     
    4
    5.2.12Polybasite
    (Ag,Cu)
     
    16
    		(Sb,As)
     
    2
    		S
     
    11
    5.2.13Billingsleyite
    Ag
     
    7
    		AsS
     
    6
    5.2.14Polybasite-Tac
    (Ag,Cu)
     
    16
    		(Sb,As)
     
    2
    		S
     
    11
    5.2.15Freibergite
    (Ag,Cu,Fe)
     
    12
    		(Sb,As)
     
    4
    		S
     
    13
    5.2.16Aramayoite
    Ag(Sb,Bi)S
     
    2
    5.2.18Schapbachite
    AgBiS
     
    2
    5.2.19Pavonite
    (Ag,Cu)(Bi,Pb)
     
    3
    		S
     
    5
    5.2.20Arcubisite
    Ag
     
    6
    		CuBiS
     
    4
    5.2.21Bohdanowiczite
    AgBiSe
     
    2
    5.2.22Selenostephanite
    Ag
     
    5
    		Sb(Se,S)
     
    4
    5.2.23Benleonardite
    Ag
     
    8
    		(Sb,As)Te
     
    2
    		S
     
    3
    5.2.24Volynskite
    AgBiTe
     
    2

    Other Names for Matildite

    Synonyms:
    ArgentobismutiteMorocochitePeruvitePlenargyrite
    German names:
    ArgentobismutitMatilditWismuthbleierzWismutisches Silber
    Japanese names:
    マティルダ鉱
    Spanish names:
    ArgentobismutitaMatildita

    Other Information

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

    References for Matildite

    Reference List:Rammelsberg (1877) Zs. deutsche geol. Ges.: 29: 80.

    Sandberger (1882): 1: 96 (as plenargyrite).

    D'Achiardi (1883): 1: 136.

    Genth (1885), American Philosophical Society, Proceedings: 23: 35.

    Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 429.

    Canadian Mineralogist (1971): 9: 655-662.

    American Mineralogist (1991): 76: 257-265.

    Internet Links for Matildite

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  • Look for Matildite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Matildite in the Natural History Museum (London) online catalogue
  • Matildite details from Handbook of Mineralogy (PDF)
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    Localities for Matildite

    Hide Locality List
    The 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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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Argentina
     
    • Chubut
      • Gastre
    		Brodtkorb (2002): Las Especies Minerales de la Republica Argentina
    • Jujuy
      • Rinconada Department
        • Pirquitas Ag-Sn Deposit
    		No reference listed
    • Salta
      • Organullo Mining District
    Australia
     
    • Tasmania
      • Rossarden district
    Bottrill RS & Baker, WE (in prep) Catalogue of Minerals of Tasmania. Mineral Resources Tasmania
    Austria
     
    • Carinthia
      • Hohe Tauern Mts
        • Goldberg group
          • Zirknitz
            • Kleine Zirknitz valley
              • Kluidscharte
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
        • Hafner group
          • Pölla valley
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    • Salzburg
      • Hohe Tauern Mts
        • Gastein valley
          • Erzwies area
    		A. Strasser: Die Minerale Salzburgs, 1989
      • Lungau
        • Murwinkel
          • Rotgülden
            • Lower Rotgülden lake
    		[Lapis 1993:5 p.13-28]
    • Tyrol
      • North Tyrol
        • Inn valley
          • Telfs
    		R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
    Bolivia
     
    • La Paz Department
      • Aroma Province
    		USGS Bulletin # 1975, p. 255.
    • Oruro Department
      • Dalence Province
        • Santa Fé Mining District
    		Federico Ahlfeld and Alejandro Schneider-Scherbina (1964) Los Yacimientos Minerales y de Hidrocarburos de Bolivia. (Ministerio de Minas y Petroleo, La Paz)
    • Potosí Department
      • Chayanta Province
        • Colquechaca
    		Dana 7:I:430.
      • Potosí City
    		[MinRec 32:465]
      • Sud Lípez Province
        • Esmoraca district
    		USGS Bulletin # 1975, p. 253.
    Bulgaria
     
    • Balkan Mts (Stara-Planina Mts)
    		http://www.bgd.bg/summanual_2003_5.htm
    • Plovdiv Oblast
      • Rhodope Mts
    		[MinRec 22 p.439]
    Canada
     
    • British Columbia
      • Omenica Mining Division
        • Smithers
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    • Northwest Territories
      • Camsell River
      • Camsell River area
    		No reference listed
    • Ontario
      • Sudbury District (Sudbury Complex; Sudbury nickel irruptive)
        • McKim Township
          • Sudbury
      • Timiskaming District
        • Cobalt-Gowganda region
          • South Lorrain Township
    		No reference listed
        • Coleman Township
          • Cart Lake
          • Cobalt
    Chile
     
    • Atacama Region
      • Copiapó Province
        • Zapallar district
    		Clark H. A. (1971): "On the status of Chilenite"; Neues Jahrbruch Fur Mineralogie, Monatsheft, pag.341-342.
    China
     
    • Jiangxi Province
      • Shangrao Prefecture
        • Dexing Co.
    		Singer, D.A., Berger, V.I., and Moring, B.C. (2002): USGS Open-File Report 02-268.
    • Yunnan Province
      • Dali Autonomous Prefecture
        • Xiangyun Co.
    		Peng, Z., Watanabe, M., Hoshino, K., Sueoka, S., Yano, T., and Nishido, H. (1998): Mineralogy and Petrology 63, 95-117.
      • Qujing Prefecture
        • Huize Co.
          • Huize Zn-Pb-(Ag) ore field
    		Runsheng Han, Congqiang Liu, Zhilong Huang, Jin Chen, Deyun Ma, Li Lei, and Gengsheng Ma (2007): Ore Geology Reviews 31(1-4), 360-383.
    Runsheng Han, Congqiang Liu, Zhilong Huang, Jin Chen, Deyun Ma, Li Lei, and Gengsheng Ma (2007): Ore Geology Reviews 31(1-4), 360-383.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
          • Ostrov
    		Lapis 2002(7/8), 63-65
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
          • Klášterec nad Ohří
    		No reference listed
    France
     
    • Alsace
      • Haut-Rhin
        • Doller Valley
          • Kirchberg-Wegscheid
    		Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997, p. 115
        • Ste Marie-aux-Mines (Markirch)
    		Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
    • Auvergne
      • Haute-Loire
        • Langeac
          • Langeac
            • Barlet
    • Brittany
      • Morbihan
        • Pontivy
          • Guern
    		R. Pierrot, L. Chauris, C. Laforêt and F. Pillard : "Inventaire Minéralogique de la France N° 9 : Morbihan", BRGM, 1980.
    • Languedoc-Roussillon
      • Aude
        • Carcassonne
          • Mas-Cabardès
            • Salsigne
    		P. Picot, Z. Johan : "Atlas of Ore Minerals", BRGM, Elsevier, 1982
    • Pays de Loire
      • Vendée
        • Les Herbiers
    		Y. Moëlo, E. Makovicky and S. Karup-Moller : "Sulfures complexes plombo-argentifères : minéralogie et cristallochimie de la série andorite-fizelyite", Documents du BRGM N° 167, 1989.
    • Provence-Alpes-Côte d'Azur
      • Alpes-Maritimes
        • Tende
    		R. Pierrot, P. Picot, J. Feraud, J. Vernet : "Inventaire Minéralogique de la France, N° 4, Alpes Maritimes", BRGM, 1974
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Baden-Baden
        • Furtwangen
          • Vöhrenbach
    		K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
        • Schapbach
          • Wildschapbach valley
    		Wittern: "Mineralfundorte in Deutschland", 2001
    K. Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
    J. Gröbner: Neufunde von der Grube Katharina im Wildschapbach, Der Erzgräber 18 (2/2004), 34-37.
        • St Blasien
          • Urberg
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German); WALENTA, K. (1993): Neue Mineralfunde von der Grube Clara (5. Folge). - Lapis 18 (1), 16-23; KOLITSCH, U., GRÖBNER, J. & BAYERL, R. (1995): Die Mineralien der Silber-Antimon-Vererzungen der Grube Clara im Zeitraum 1993 bis 1995. - Erzgräber 9 (2), 61-77.
    • Bavaria
      • Lower Bavaria
        • Bavarian Forest
          • Zwiesel
            • Bodenmais
    		Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
      • Upper Palatinate
        • Oberpfälzer Wald
          • Vohenstrauß
            • Waidhaus
              • Hagendorf
        • Schwandorf
          • Wölsendorf Fluorite mining District
            • Wölsendorf East District (Wölsendorf - Nabburg District)
    		Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Saxony
      • Erzgebirge
        • Ehrenfriedersdorf
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Lapis 30(7/8):78-80 (2005)
    Greenland
     
    • Kitaa (West Greenland) Province
      • Arsuk
        • Arsuk Firth
          • Ivittuut (Ivigtut)
    		[www.hedegaard.com]
    Hungary
     
    • Pest Co.
      • Börzsöny Mts.
    		Koch: Minerals of Hungary, 1985
    Japan
     
    • Honshu Island
      • Kanto Region
        • Tochigi Prefecture
          • Kuriyamamura
    		Dana 7:I:430.
      • Kinki Region
        • Hyogo Prefecture
          • Asago-gun
            • Ikuno-machi
    		No reference listed
    Mexico
     
    • Chihuahua
      • Mun. de Saucillo
        • Naica
    		Panczner(1987): 98-351.
    Norway
     
    • Aust-Agder
    		No reference listed
    Peru
     
    • Junín Department
      • Yauli Province
    		Min.Rec. 28, #4 (1997)
    Canadian Mineralogist (1969) 9, 655; Dana 7:I:430.
    Poland
     
    • Lower Silesia (Dolnośląskie)
      • Rudawy Janowickie Mts
        • Czarnów
          • Rędziny
    		Gołębiowska B., Pieczka A., Parafiniuk J. 2006: Cu(Ag)-Pb-Bi(Sb) sulphosalts from Rędziny (Western Sudetes, Poland). Mineralogia Polonica - Special Papers, vol. 28, 78-80
    Portugal
     
    • Castelo Branco District
      • Covilhã
        • Panasqueira
    No reference listed
    Romania
     
    • Maramures Co.
      • Baia Borsa
    		Mitt. .Österr. Miner. Ges. 143 (1998)
      • Baiut
    		Mitt. .Österr. Miner. Ges. 143 (1998)
    Russia
     
    • Eastern-Siberian Region
      • Saha Republic (Sakha Republic; Yakutia)
        • Indigirka River Basin
          • Ust'-Nera
    • Far-Eastern Region
      • Kamchatka Oblast'
    		[Der Aufschluss 1995:4 p.163-180]
      • Primorskiy Kray
        • Dal'negorsk (Dalnegorsk)
    		Min Rec vol 32, pp 7-30 (2001)
    Simanenko, L.F. (2006): Geology of Ore Deposits 48(4), 290-303
    Slovakia
     
    • Banská Bystrica Region
      • Southern Low Tatra Mts
        • Jarabá
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
      • Štiavnica Mts
        • Banská Štiavnica Mining District
    Koděra, M., a kol.: Topografická mineralogie Slovenska. Sv. 1 A-Kl, Bratislava, Veda 1986, s. 448-472.
    • Trenčín region
      • Suchý and Malá Magura Mts
        • Čierna Lehota
    		Pršek, J., Mikuš, T., Makovicky, E., Chovan, M.(2005): Cuprobismutite, kupčíkite, hodrushite and associated sulfosalts from the black shale hosted Ni-Bi-As mineralization at Čierna Lehota, Slovakia. Eur. J. Mineral., 17, p.155-162.
    South Korea
     
    Dongbok Shin et al. , The Canadian Mineralogist, Volume 42, Number 5, October 2004, pp. 1465-1481
    Spain
     
    • Castile and Leon
      • Salamanca
    		Revista de minerales, 2000 (Mars), 260-263.
    • Madrid
    		Jimenez R., Joda L., Jorda R., Prado P. (2004) - Madrid: la mineria metallica desde 1417 hasta nuestros dias. Bocamina, n°14, pp: 52-89.
    Sweden
     
    • Småland
      • Vetlanda
        • Fröderyd
    		H.-J.Wilke: Die Mineralien und Fundstellen von Schweden.1997
    H.-J.Wilke: Die Mineralien und Fundstellen von Schweden.1997
    H.-J.Wilke: Die Mineralien und Fundstellen von Schweden.1997
    H.-J.Wilke: Die Mineralien und Fundstellen von Schweden.1997
    No reference listed
    J.Mansfeld.: Mineralogical-minerochemical investigation of Fredriksberg, Karl XV , Hökhult and Kallsjö mineralization in Fröderyd parish, Småland. 1988
    H.-J.Wilke: Die Mineralien und Fundstellen von Schweden.1997
    H.-J.Wilke: Die Mineralien und Fundstellen von Schweden.1997
    H.-J.Wilke: Die Mineralien und Fundstellen von Schweden.1997
    • Södermanland
      • Nyköping
        • Tunaberg
    		No reference listed
    MinMag (1992) 56, 113-115, NJMAh 165, 123
    • Värmland
      • Säffle
    		No reference listed
    • Västergötland
      • Trollhättan
        • Öresjö lake
    		Erling Olsson and Aksel Østerløf
    Turkey
     
    • Black Sea Region
      • Artvin Province
        • Murgul
    		A. Willgallis et al. : "Se- and Te-bearing sulphides in copper ore deposits of Murgul, NE Turkey", Eur. J. Mineral., 1990, 2, pp. 145-148.
    UK
     
    • Scotland
      • Dumfries & Galloway (Wigtownshire)
        • Newton Stewart
          • Talnotry
    		BMS Database
      • North West Highlands (Inverness-shire)
        • Glenelg
    		[MinMag 57:751-754]
    • Wales
      • Gwynedd (Merionethshire)
        • Dolgellau Gold Belt
          • Bontddu
    		BMS Database
    USA
     
    • Arizona
      • Cochise Co.
        • Mule Mts
          • Warren District
    		[MinRec 24:421]
    Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 291; Graeme, R. (1993), Bisbee revisited, Min.Rec.: 24: 421-436.
    • California
      • Inyo Co.
    		MinRec 15:5
    • Colorado
      • Clear Creek Co.
        • Alice District
    		"Minerals of Colorado, updated & revised", p. 13, by Eckel, Edwin B., 1997
    Min Rec 18:3 pp185-187
    Minerals of Colorado (1997) Eckels, E. B.
    Minerals of Colorado (1997) Eckels, E. B.
    Minerals of Colorado (1997) E.B. Eckels
      • Custer Co.
        • Rosita District
    		Minerals of Colorado (1997) Eckels, E. B.
        • Silver Cliff District
    		Minerals of Colorado (1997) E.B. Eckels
      • Eagle Co.
        • Gilman District (Battle Mountain District; Red Cliff District)
          • Gilman
    		"Minerals of Colorado, updated & revised", pp. 13-14, by Eckel, Edwin B., 1997
      • Hinsdale Co.
    		Minerals of Colorado (1997) Eckel, E. B.
      • Lake Co.
        • Leadville District
          • Iron Hill
    		Minerals of Colorado (1997) Eckels, E. B.
    MinRec 16:171-201
            • Iowa Gulch
    		Minerals of Colorado (1997) E.B. Eckels
            • Iron Hill
    		Minerals of Colorado (1997) E.B. Eckels
    Minerals of Colorado (1997) E.B. Eckels
      • Montezuma Co.
        • La Plata District (California District)
    		Minerals of Colorado (1997) E.B. Eckels
      • Ouray Co.
        • Sneffels District (Mount Sneffels District)
          • Ouray
    		The Mines and Minerals of the Great American Rift, R.W. Holmes & M.B. Kennedy, 1983
      • Park Co.
        • Alma District
          • Alma
    		Minerals of Colorado (1997) Eckels, E. B.
        • Grant
    		Minerals of Colorado (1997) E.B. Eckels
        • Montezuma District
          • Hall Valley
    		Minerals of Colorado (1997) E.B. Eckels
    Minerals of Colorado (1997) Eckels, E. B.
      • San Juan Co.
        • Eureka District
    		Minerals of Colorado (1997) E.B. Eckels
        • Silverton District
          • Poughkeepsie Gulch
    		Minerals of Colorado (1997) E.B. Eckels
    Minerals of Colorado (1997) Eckels, E. B.
    Minerals of Colorado (1997)
      • San Miguel Co.
        • Ouray District (Uncompahgre District)
          • Telluride
    		Minerals of Colorado (1997) Eckel, E. B.
      • Summit Co.
        • Argentine District
          • Peru Creek Area
    		Minerals of Colorado (1997) E.B. Eckels
        • Montezuma Area
    		Minerals of Colorado (1997) E.B. Eckels
    Minerals of Colorado (1997) Eckels, E. B.
    • Idaho
      • Boise Co.
        • Boise Basin District
          • Placerville
    		Dana 7: I:430.
        • Quartzburg District
    		R&M 70:4 pp 242-263
    Ream, Lanny R. 2004. Idaho Minerals, 2nd edition, Revised and Updated
    • Nevada
      • Mineral Co.
        • Borealis District
          • Borealis mine
    		NBMG Spec. Pub. 31 Minerals of Nevada
      • Nye Co.
        • Round Mountain District
    		[MinRec 22:181]
    • New Mexico
      • Hidalgo Co.
        • San Simon District
    		R&M 77:5 p298-305
    • Utah
      • Utah Co.
        • East Tintic Mts
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
    Mineral and/or Locality
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