Tyrrellite | |
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General | |
Category | Selenide mineral Thiospinel group (Spinel structural group) |
Formula (repeating unit) | Cu(Co,Ni)2Se4 |
IMA symbol | Ty[1] |
Strunz classification | 2.DA.05 |
Crystal system | Isometric |
Crystal class | Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) |
Space group | Fd3m |
Unit cell | a= 10.005 Å; Z = 8 |
Identification | |
Color | light bronze |
Crystal habit | granular |
Cleavage | {001} Distinct |
Fracture | conchoidal |
Tenacity | brittle |
Mohs scale hardness | 3.5 |
Luster | metallic |
Streak | black |
Diaphaneity | Opaque |
Specific gravity | 6.6 ± 0.2 |
References | [2][3][4][5] |
Tyrrellite is a selenide mineral that has a chemical formula of Cu(Co,Ni)2Se4.[4] It has been found in the Goldfields District in northern Saskatchewan, as well as in the Petrovice deposit, Czech Republic.[3] It is named after the Canadian geologist Joseph Burr Tyrrell. Joseph Tyrrell was one of the first geologists from the Geological Survey of Canada to do research in the Goldfields District.[6]