Carrollite
Synonyms: | Carrolite, Corrolite, Sychnodymite |
Classification: | Sulfides |
Chemical formula: | Cu(Co,Ni)2S4 |
Crystal system: | Isometric |
Density (g/cm3): | 4,5 - 4,8 measured, 4,83 calculated |
Tenacity: | Very brittle |
Cleavage: | None Observed |
Fracture: | Irregular/Uneven, Conchoidal, Sub-Conchoidal |
Hardness (Mohs): | 4,5 - 5,5 |
Colour: | Bright silver color, rarely tarnishes to copper red or violet gray |
Lustre: | Metallic |
Streak: | Gray black |
Type locality: | Patapsco mine (Finksburg Mine; Orchard Mine), Patapsco Mines, Finksburg, Sykesville, Carroll Co., Maryland, USA |
Application: | Cobalt ore |