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Frohbergite

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Big Photo

Gold Hill, San Simon Basin (San Simon River; Bowie Chabazite deposit), Bowie area, Cochise Co., Arizona, USA
© 2007, JGW

Show Frohbergite Photos (7)



Formula:
FeTe
 
2
System:OrthorhombicHardness:3 - 4
Name:For Dr. Max Hans Frohberg, mining geologist, Toronto, Canada.


Frohbergite-Mattagamite Series.

Classification of Frohbergite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:2/D.20-50
Nickel-Strunz 10th (pending) edition ID:2.EB.10a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.
Dana 8th edition ID:2.12.2.3

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
Hey's CIM Ref.:3.9.10

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
9 : Sulphides etc. of Fe
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Type Occurrence of Frohbergite

Type Locality:Robb-Montbray Mine, Rouyn-Noranda TE, Abitibi-Témiscamingue, Québec, Canada
Year of Discovery:1946

Occurrences of Frohbergite

Geological Setting:Hydrothermal deposits rimming chalcopyrite or as inclusions in gold, petzite, chalcopyrite

Physical Properties of Frohbergite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Hardness (Mohs):3 - 4
Hardness (Vickers):VHN100=250 - 297
Density (calculated):8.057 g/cm3

Crystallography of Frohbergite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pnnm {P21/n 21/n 2/m}
Space Group Setting:Pnnm
Cell Parameters:a = 5.29Å, b = 6.27Å, c = 3.86Å
Ratio:a:b:c = 0.844 : 1 : 0.616
Unit Cell Volume:V 128.03 ų (Calculated from Unit Cell)
Z:2
Morphology:tiny equant grains

Optical Data of Frohbergite

Type:Anisotropic
Anisotropism:Strong, orange red to inky blue
Colour in reflected light:White with bluish or pinkish tint
Pleochroism:Weak

Chemical Properties of Frohbergite

Formula:
FeTe
 
2
Essential elements:Fe, Te
All elements listed in formula:Fe, Te

Relationship of Frohbergite to other Species

Series:Forms a series with Mattagamite (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
2.EB.05aAurostibite
AuSb
 
2
2.EB.05bBambollaite
Cu(Se,Te)
 
2
2.EB.05aCattierite
CoS
 
2
2.EB.05aErlichmanite
OsS
 
2
2.EB.05aFukuchilite
Cu
 
3
FeS
 
8
2.EB.05aGeversite
PtSb
 
2
2.EB.05aHauerite
MnS
 
2
2.EB.05aInsizwaite
Pt(Bi,Sb)
 
2
2.EB.05aKrut'aite
CuSe
 
2
2.EB.05aLaurite
RuS
 
2
2.EB.05aPenroseite
(Ni,Co,Cu)Se
 
2
2.EB.05aPyrite
FeS
 
2
2.EB.05aSperrylite
PtAs
 
2
2.EB.05aTrogtalite
CoSe
 
2
2.EB.05aVaesite
NiS
 
2
2.EB.05aVillamaninite
(Cu,Ni,Co,Fe)S
 
2
2.EB.05aDzharkenite
FeSe
 
2
2.EB.05aGaotaiite
Ir
 
3
Te
 
8
2.EB.10bAlloclasite
Co
 
1-x
Fe
 
x
AsS
2.EB.10dCostibite
CoSbS
2.EB.10aFerroselite
FeSe
 
2
2.EB.10cGlaucodot
(Co
 
0.50
Fe
 
0.50
)AsS
2.EB.10aKullerudite
NiSe
 
2
2.EB.10aMarcasite
FeS
 
2
2.EB.10aMattagamite
CoTe
 
2
2.EB.10eParacostibite
CoSbS
2.EB.10ePararammelsbergite
NiAs
 
2
2.EB.10fOenite
CoSbAs
2.EB.15aAnduoite
(Ru,Os)As
 
2
2.EB.15aClinosafflorite
(Co,Fe,Ni)As
 
2
2.EB.15aLöllingite
FeAs
 
2
2.EB.15aNisbite
NiSb
 
2
2.EB.15aOmeiite
(Os,Ru)As
 
2
2.EB.15cPaxite
CuAs
 
2
2.EB.15aRammelsbergite
NiAs
 
2
2.EB.15aSafflorite
(Co,Fe,Ni)As
 
2
2.EB.15bSeinäjokite
(Fe,Ni)(Sb,As)
 
2
2.EB.20Arsenopyrite
FeAsS
2.EB.20Gudmundite
FeSbS
2.EB.20Osarsite
(Os,Ru)AsS
2.EB.20Ruarsite
(Ru,Os)AsS
2.EB.25Cobaltite
CoAsS
2.EB.25Gersdorffite
NiAsS
2.EB.25Hollingworthite
(Rh,Pt,Pd)AsS
2.EB.25Irarsite
(Ir,Ru,Rh,Pt)AsS
2.EB.25Jolliffeite
NiAsSe
2.EB.25Krutovite
NiAs
 
2
2.EB.25Maslovite
PtBiTe
2.EB.25Michenerite
PdBiTe
2.EB.25Padmaite
PdBiSe
2.EB.25Platarsite
(Pt,Rh,Ru)AsS
2.EB.25Testibiopalladite
PdTe(Sb,Te)
2.EB.25Tolovkite
IrSbS
2.EB.25Ullmannite
NiSbS
2.EB.25Willyamite
(Co,Ni)SbS
2.EB.25Changchengite
IrBiS
2.EB.25Mayingite
IrBiTe
2.EB.25Hollingsworthite
2.EB.25Kalungaite
PdAsSe
2.EB.25Milotaite
PdSbSe
2.EB.30Urvantsevite
Pd(Bi,Pb)
 
2
2.EB.35Rheniite
ReS
 
2
Related Minerals - Hey's Index Grouping:

- +
3.9.1Pyrrhotite
Fe
 
1-x
S (x = 0 to 0.17)
3.9.3Pyrite
FeS
 
2
3.9.4Marcasite
FeS
 
2
3.9.5Greigite
Fe
2+
 
Fe
3+
2
S
 
4
3.9.6Mackinawite
(Fe,Ni)
 
9
S
 
8
3.9.7Smythite
(Fe,Ni)
 
3+x
S
 
4
 (x=0-0.3)
3.9.8Achavalite
(Fe,Cu)Se
3.9.9Ferroselite
FeSe
 
2
3.9.11Löllingite
FeAs
 
2
3.9.12Arsenopyrite
FeAsS
3.9.13Gudmundite
FeSbS

Other Names for Frohbergite

Other Languages:
German:Frohbergit
Russian:Фробергит
Simplified Chinese:碲铁矿
Spanish:Frohbergita
Varieties:
Cobalt-frohbergite

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 Frohbergite

Reference List:

- +
THOMPSON, R.M. (1947): Frohbergite, FeTe2, a new member of the marcasite group. Contributions to Canadian Mineralogy, University of Toronto Studies, Geological Series 51, 35-40. Abstracted in American Mineralogist 32, 210.
THOMPSON, R.M. (1949): The telluride minerals and their occurrence in Canada. American Mineralogist 34, 342-382.
RUCKLIDGE, J. (1969): Frohbergite, montbrayite and a new PbBBi telluride. Canadian Mineralogist 9, 709-716.
BROSTIGEN, G. & KJEKSHUS, A. (1970): Compounds with marcasite type crystal structure. V. The crystal structures of FeS2, FeTe2, and CoTe2. Acta Chemica Scandinavica 24, 1925-1940.

Internet Links for Frohbergite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Frohbergite details from Handbook of Mineralogy (PDF)
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    • Localities for Frohbergite

    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.
    Hide Locality List
    (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.
    Brazil
     
    • Goiás
      • Mara Rosa
    		Econ Geol. (1995) 90:308-321
    Canada
     
    • British Columbia
      • Omenica Mining Division
        • Lindquist Lake
    		Handbook of Mineralogy
    • Québec
      • Abitibi-Témiscamingue
        • La Vallée-de-l'Or RCM
          • Val d'Or
    		Econ.Geol.: 83; 395-404
        • Rouyn-Noranda TE
    		Econ.Geol.: 83; 395-404
    THOMPSON, R.M. (1947): Frohbergite, FeTe2, a new member of the marcasite group. Contributions to Canadian Mineralogy, University of Toronto Studies, Geological Series 51, 35-40. Abstracted in American Mineralogist 32, 210. THOMPSON, R.M. (1949): The telluride minerals and their occurrence in Canada. American Mineralogist 34, 342-382. RUCKLIDGE, J. (1969): Frohbergite, montbrayite and a new Pb-Bi telluride. Canadian Mineralogist 9, 709-716.
    China
     
    • Shandong Province
      • Linyi Prefecture
        • Pingyi Co.
          • Tongshi complex
    		Xuefeng Yu (2001): Shandong Geology 17(3-4), 59-64
    Finland
     
    • Eastern Finland Region
      • Ilomantsi
    		No reference listed
    • Northern Finland Region
      • Kuusamo
    No reference listed
    • Western and Inner Finland Region
      • Orivesi
    		Economic Geology (1996) 91:1335-1353
    France
     
    • Brittany
      • Finistère
        • Bolazec
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    Japan
     
    • Hokkaido
      • Sapporo
    		Nakata et al (1989) Mineralogical Magazine, 53, 387-388.
    • Honshu Island
      • Chubu Region
        • Shizuoka Prefecture
          • Shimoda City
            • Rendaiji
    		Gunnar Farber and Luigi Chiappino specimens, 2007 (but one of these, analyzed by F. Keutsch, showed only gold and gold tellurides).
    Kazakhstan
     
    • Akmola Province (Aqmola Oblysy; Akmolinskaya Oblast')
    		P.M. Kartashov analytical data
    Norway
     
    • Finnmark
      • Kautokeino
    		Neumann, H. (1985): Norges Mineraler. Norges Geologiske Undersøkelse Skrifter 68. (p. 39).
    Romania
     
    • Alba Co.
      • Zlatna (Zalatna; Zalathna)
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
    • Hunedoara Co.
      • Brad
    		Econ.Geol.: 83; 395-404; Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
    Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Econ.Geol.: 83; 395-404
    M. Lupulescu (1996) Tellurantimony and frohbergite from Stanija ore deposit (Apuseni Mtns.): a discussion. Anal.Univ.Buc., Geol., XLV, p. 3-9.
    Saudi Arabia
     
    • Mintaqah Al Madinah
    		Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Econ.Geol.: 83; 395-404
    • Mintaqah Tabuk
      • Wejh
    		Econ.Geol.: 83; 395-404
    Sweden
     
    • Hälsingland
      • Ljusdal
    		No reference listed
    • Västerbotten
      • Sandfors
    		No reference listed
    T. Wikström, thesis from Stockholm University
    Ukraine
     
    • Kiev Oblast' (Kyiv Oblast'; Kyivshchyna)
    		Bondarenko, S.; Grinchenko, O.; Semka, V. (2005): Au-Ag-Te-Se mineralization in the Potashnya gold deposit, Kocherov tectonic zone, Ukrainian Shield. Geokhimiya, Mineralogiya i Petrologiya 43, 20-25.
    USA
     
    • Arizona
      • Cochise Co.
        • Bowie area
          • San Simon Basin (San Simon River; Bowie Chabazite deposit)
    		Handbook of Mineralogy, http://rruff.geo.arizona.edu/doclib/hom/frohbergite.pdf>
        • Tombstone Hills
          • Tombstone District
    		Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 227; Williams, S.A. (1980b), The Tombstone District, Cochise Co., AZ, Min.Rec.: 11: 251-256.
    • Colorado
      • Gunnison Co.
        • Vulcan District (Cebolla District; Domingo District)
    		Frank Keutsch collection, polished section SEM/EDS and reflected light
    A Listing of North Carolina Minerals,Leonard S.Wiener and Sigrid Ballew,1995,Updated by Kenny Gay,June 2007, North Carolina Geological Survey,Geologic Note No.4
      • Montgomery Co.
        • Carolina Slate Belt
    		Callahan,J.E,Craig,J.R Solberg,T.N,1995, Telluride mineralization of the southeastern United States,Southeastern Geology,v.35, no.3, pg.139-151
    Uzbekistan
     
    • Tashkent (Toshkent) Viloyati
      • Angren Region
        • Chatkal-Kuraminskii Range
    		Kovalenker, V. et al New Data on Minerals (2003): 38: 45-56
    Pasi Eilu (2003) Exploration for orogenic gold deposits. Fennoscandian Exploration and Mining 2003 Rovaniemi, Finland December 2003
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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