mineral
K-Feldspar
Potassium feldspar (KAlSi3O8)
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, typically pink to reddish-brown in color, with a vitreous to pearly luster and monoclinic or triclinic crystal structure.
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Physical properties
Hardness of 6 on the Mohs scale, typically pink to reddish-brown in color, with a vitreous to pearly luster and monoclinic or triclinic crystal structure.
Formation & geological history
Formed through the crystallization of magma in igneous environments like granites and pegmatites, as well as in metamorphic rocks.
Uses & applications
Used widely in the manufacture of ceramics, glass, porcelain, and as abrasive agents.
Geological facts
Feldspar is the single most abundant mineral group in the Earth's crust, making up about 60% of the crust.
Field identification & locations
Easily identified in the field by its distinct pink color, rectangular cleavage planes, and hardness exceeding that of a knife.
