mineral
Feldspar
Feldspar Group (Tectosilicate, e.g., KAlSi3O8)
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, typically white, pink, or gray with a vitreous to pearly luster. It exhibits two directions of cleavage at or near 90 degrees and has a monoclinic or triclinic crystal structure.
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Physical properties
Hardness of 6 on the Mohs scale, typically white, pink, or gray with a vitreous to pearly luster. It exhibits two directions of cleavage at or near 90 degrees and has a monoclinic or triclinic crystal structure.
Formation & geological history
Forms in igneous rocks like granite and pegmatites through the cooling of magma, as well as in metamorphic and sedimentary environments.
Uses & applications
Widely used in the manufacture of glass, ceramics, pottery glazes, and as a flux in metallurgy.
Geological facts
Feldspar is the most abundant mineral group in the Earth's crust, making up about 60% of terrestrial rocks.
Field identification & locations
Identified by its blocky crystal shape, good cleavage, and 6 Mohs hardness; found globally in pegmatites and granitic terrains.
