mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
AI-generated identification · may be incorrectHardness of 6 on Mohs scale, pink to salmon-orange color, vitreous to pearly luster, monoclinic crystal system, and two directions of good cleavage at nearly 90 degrees.
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Physical properties
Hardness of 6 on Mohs scale, pink to salmon-orange color, vitreous to pearly luster, monoclinic crystal system, and two directions of good cleavage at nearly 90 degrees.
Formation & geological history
Forms primarily in felsic igneous rocks like granite and pegmatites through the slow cooling of magma rich in potassium and silica.
Uses & applications
Widely used in the manufacture of ceramics, porcelain, glass, and as a scouring agent in abrasives.
Geological facts
Feldspar is the single most common mineral group in the Earth's crust, making up about 60% of the outer crust.
Field identification & locations
Easily identified in the field by its distinct pinkish hue, blocky habit, and right-angle cleavage planes.
