|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | graphite | 1.00 | basal | Uneven | opaque | none | 2.23 | submetallic | grey | grey | tabular | native element | metallic to dull luster. On natural surfaces looks similar to lead, but cleavage, density and hardness are different. |
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