mineral
K-Feldspar
Potassium Feldspar (KAlSi3O8)
AI-generated identification · may be incorrectMohs hardness of 6; pink, red, or white color; vitreous to pearly luster; monoclinic or triclinic crystal system; distinct cleavage at nearly 90 degrees.
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Physical properties
Mohs hardness of 6; pink, red, or white color; vitreous to pearly luster; monoclinic or triclinic crystal system; distinct cleavage at nearly 90 degrees.
Formation & geological history
Forms primarily in 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, glass, porcelain, and occasionally as a minor gemstone or ornamental material.
Geological facts
Feldspars are the most abundant group of minerals in the Earth's crust, making up about 60% of terrestrial rocks.
Field identification & locations
Identified by its characteristic pinkish-red hue and good cleavage planes; found worldwide in granitic terrains and pegmatite dikes.
