mineral
Feldspar
Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, typically white, gray, or pink in color with a vitreous to pearly luster and distinct cleavage planes at nearly 90 degrees.
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Physical properties
Hardness of 6 on the Mohs scale, typically white, gray, or pink in color with a vitreous to pearly luster and distinct cleavage planes at nearly 90 degrees.
Formation & geological history
Forms in igneous, metamorphic, and sedimentary rocks through the cooling of magma or crystallization from hydrothermal solutions.
Uses & applications
Widely used in the manufacture of ceramics, glass, porcelain, and as a flux in metallurgy.
Geological facts
Feldspar is the most abundant group of minerals in the Earth's crust, making up about 60% of terrestrial rocks.
Field identification & locations
Identified easily by its rectangular crystal habit, good cleavage, and hardness that scratches glass; found worldwide in granites and pegmatites.
