|
Hard- ness |
Cleavage |
Fracture |
Trans- parency |
10% HCl Reaction |
SG |
Luster |
Color |
Streak |
Xtal Form |
Mineral Class |
Comments | perthite (feldspar group) | 6.00 | poor | conchoidal | opaque | none | 2.55 | glassy | white | white | tabular | silicates | Primaraly the color of the host microcline crystal with lighter lamellae of albite or oligoclase inclusions. |
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