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MINERAL IDENTIFICATION PROJECT |
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Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | skutterudite | 6.00 | perfect | hackly | opaque | none | 6.50 | metallic | silver | black | faceted | sulfides | Iridescent film. Smaltite is a low arsenic variety. |
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