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Tyrrellite

Type Locality
Eagle Claims U-Cu-Se Occurrence, Eagle shaft area, Melville Lake, Goldfields District, Beaverlodge Region, Saskatchewan, Canada
Mineral Data
Cu(Co3+,Ni3+)2Se4
Strunz: 
2.DA.05
Physical Properties
Colour: 
Bronze
Streak: 
Black
Hardness: 
3.5
Tenacity: 
brittle