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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 | goethite | 5.00 | basal | Uneven | Translucent | none | 4.30 | waxy | grey | yellow | acicular | hydroxides | Rarely prismatic or tabular. Perfect cleavage makes it seem to have a low hardness. Feels greasy. |
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