|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | tetrahedrite-tennantite | 3.00 | none | conchoidal | opaque | none | 4.50 | metallic | silver | grey | faceted | sulfides | solid solution series with tetrahedrite, tennantite, goldfieldite, and freibergite. fragile crystals |
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