mineral
K-Feldspar
Potassium Feldspar (KAlSi3O8)
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, pink to salmon-white color, vitreous to pearly luster, and distinct cleavage at nearly 90 degrees.
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Physical properties
Hardness of 6 on the Mohs scale, pink to salmon-white color, vitreous to pearly luster, and distinct cleavage at nearly 90 degrees.
Formation & geological history
Forms primarily in igneous rocks like granite and pegmatites through the slow cooling of silica-rich magma deep within the Earth's crust.
Uses & applications
Widely used in the manufacturing of ceramics, glass, porcelain, and occasionally as a minor decorative gemstone.
Geological facts
Feldspars are the single most abundant mineral group in the Earth's crust, making up about 60% of terrestrial rocks.
Field identification & locations
Easily identified in the field by its characteristic pink or salmon coloration and blocky crystal cleavage planes; found worldwide.
