mineral
K-feldspar (Potassium Feldspar)
Microcline / Orthoclase (KAlSi3O8)
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, pink to reddish 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 reddish color, vitreous to pearly luster, and distinct cleavage at nearly 90 degrees.
Formation & geological history
Forms in igneous rocks like granite and pegmatites through slow cooling of magma rich in potassium and silica.
Uses & applications
Used in the manufacturing of ceramics, porcelain, glass, and occasionally as a minor gemstone or lapidary material.
Geological facts
Feldspars are the most abundant mineral group in the Earth's crust, making up about 60% of terrestrial rocks.
Field identification & locations
Identify by its distinctive pink color, rectangular crystal habit, and two cleavage planes meeting at right angles.
