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Mattagamite

Formula:
CoTe
 
2
System:OrthorhombicColour:Violet
Hardness:
Name:For the type locality, the Mattagami Lake mines, Mattagami, Galinee Township, Abitibi Co., Québec, Canada.


Frohbergite-Mattagamite Series.

Classification of Mattagamite

IMA status:Approved
Strunz 8th edition ID:2/D.20-60
Nickel-Strunz 10th (pending) edition ID:2.EB.10

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:2.12.2.5

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
Hey's CIM Ref.:3.10.8

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

Type Locality:Mattagami Lake mines, Mattagami, Galinee Township, Matagami VMS district, Abitibi Co., Québec, Canada
Year of Discovery:1973
Associated Minerals at type locality:
ChalcopyriteAltaite

Physical Properties of Mattagamite

Lustre:Metallic
Colour:Violet
Hardness (Mohs):

Crystallography of Mattagamite

Crystal System:Orthorhombic
Cell Parameters:a = 5.31Å, b = 6.31Å, c = 3.88Å
Ratio:a:b:c = 0.842 : 1 : 0.615
Unit Cell Volume:V 130.00 ų (Calculated from Unit Cell)

Chemical Properties of Mattagamite

Formula:
CoTe
 
2
Essential elements:Co, Fe, Sb, Te
All elements listed in formula:Co, Te
Common Impurities:Fe,Sb

Relationship of Mattagamite to other Species

Series:Forms a series with Frohbergite (see here)
Related Minerals - Nickel-Strunz Grouping):
2.EB.05Aurostibite
AuSb
 
2
2.EB.05Bambollaite
Cu(Se,Te)
 
2
2.EB.05Cattierite
CoS
 
2
2.EB.05Erlichmanite
OsS
 
2
2.EB.05Fukuchilite
Cu
 
3
FeS
 
8
2.EB.05Geversite
PtSb
 
2
2.EB.05Hauerite
MnS
 
2
2.EB.05Insizwaite
Pt(Bi,Sb)
 
2
2.EB.05Krut'aite
CuSe
 
2
2.EB.05Laurite
RuS
 
2
2.EB.05Penroseite
(Ni,Co,Cu)Se
 
2
2.EB.05Pyrite
FeS
 
2
2.EB.05Sperrylite
PtAs
 
2
2.EB.05Trogtalite
CoSe
 
2
2.EB.05Vaesite
NiS
 
2
2.EB.05Villamanínite
(Cu,Ni,Co,Fe)S
 
2
2.EB.05Dzharkenite
FeSe
 
2
2.EB.05Gaotaiite
Ir
 
3
Te
 
8
2.EB.10Ferroselite
FeSe
 
2
2.EB.10Frohbergite
FeTe
 
2
2.EB.10Hastite
CoSe
 
2
2.EB.10Kullerudite
NiSe
 
2
2.EB.10Marcasite
FeS
 
2
2.EB.15Alloclasite
(Co,Fe)AsS
2.EB.15Anduoite
(Ru,Os)As
 
2
2.EB.15Clinosafflorite
(Co,Fe,Ni)As
 
2
2.EB.15Costibite
CoSbS
2.EB.15Krutovite
NiAs
 
2
2.EB.15Löllingite
FeAs
 
2
2.EB.15Nisbite
NiSb
 
2
2.EB.15Omeiite
(Os,Ru)As
 
2
2.EB.15Paracostibite
CoSbS
2.EB.15Pararammelsbergite
NiAs
 
2
2.EB.15Rammelsbergite
NiAs
 
2
2.EB.15Safflorite
(Co,Fe)As
 
2
2.EB.15Seinäjokite
(Fe,Ni)(Sb,As)
 
2
2.EB.15Oenite
CoSbAs
2.EB.20Arsenopyrite
FeAsS
2.EB.20Glaucodot
(Co,Fe)AsS
2.EB.20Gudmundite
FeSbS
2.EB.20Osarsite
(Os,Ru)AsS
2.EB.20Paxite
CuAs
 
2
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.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:
3.10.1Cobaltpentlandite
(Co,Ni,Fe)
 
9
S
 
8
3.10.2Linnaeite
Co
2+
 
Co
3+
2
S
 
4
3.10.3Cattierite
CoS
 
2
3.10.4Freboldite
CoSe
3.10.5Bornhardtite
Co
2+
 
Co
3+
2
Se
 
4
3.10.6Trogtalite
CoSe
 
2
3.10.7Hastite
CoSe
 
2
3.10.9Modderite
(Co,Fe)As
3.10.10Safflorite
(Co,Fe)As
 
2
3.10.11Clinosafflorite
(Co,Fe,Ni)As
 
2
3.10.12Skutterudite
(Co,Fe,Ni)As
 
2-3
3.10.13Cobaltite
CoAsS
3.10.14Paracostibite
CoSbS
3.10.15Costibite
CoSbS
3.10.16Alloclasite
(Co,Fe)AsS
3.10.17Glaucodot
(Co,Fe)AsS
3.10.18Carrollite
Cu(Co,Ni)
 
2
S
 
4

Other Names for Mattagamite

Synonyms:
IMA1972-003
German names:
Mattagamit
Russian names:
Маттагамит
Spanish names:
Mattagamita

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 Mattagamite

Reference List:FeTe2, and CoTe2. Acta Chem. Scand.: 24: 1925−1940.

American Mineralogist (1974): 59: 382.

Canadian Mineralogist (1973): 12: 55-60.

Internet Links for Mattagamite

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    Localities for Mattagamite

    (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.
    Canada
     
    • Québec
      • Abitibi Co.
        • Matagami VMS district
          • Galinee Township
            • Mattagami
    Can.Min.(1973) 12, 55-60
    Finland
     
    • Oulun (Oulu) Lääni
      • Kuusamo
    No reference listed
    Mineral and/or Locality
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