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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 | galena | 2.50 | perfect | Uneven | opaque | none | 7.20 | metallic | silver | grey | faceted | sulfides | Dull metallic surface, bright on new surfaces. Cubic Xtals with excellent cleavage in 3 right angle planes. |
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