igneous
Feldspar in Matrix
Feldspar group minerals in metamorphic or igneous matrix
Hardness of 6 on the Mohs scale, pink to grayish color, vitreous to pearly luster, monoclinic or triclinic crystal structure, good cleavage in two directions.
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Physical properties
Hardness of 6 on the Mohs scale, pink to grayish color, vitreous to pearly luster, monoclinic or triclinic crystal structure, good cleavage in two directions.
Formation & geological history
Formed through the cooling of magma or crystallization in pegmatites and metamorphic environments over millions of years.
Uses & applications
Used in the manufacture of ceramics, glass, as a flux, and as mineral specimens for collectors.
Geological facts
Feldspars are the most common mineral group in the Earth's crust, making up about 60% of terrestrial rocks.
Field identification & locations
Identify by its blocky crystal habit, pinkish hue, and hardness. Commonly found in granites, pegmatites, and gneiss.
