Mineral Identification Table
Silicate) Luster nonmetallic. Color white or gray. Hardness 6. Cleavage 2 planes at close to right angles, twinning striations. Streak white. Most igneous and metamorphic rocks; volcanic-derived sandstone. Sodium-rich varieties mined for use in ceramics. Potassium Feldspar (K,Al Silicate) Luster nonmetallic. Color varies white, cream, or pink ...
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