mineral
Feldspar
Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, typically white, pink, or yellowish-brown in color, with a vitreous to pearly luster and prismatic crystal structure.
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Physical properties
Hardness of 6 on the Mohs scale, typically white, pink, or yellowish-brown in color, with a vitreous to pearly luster and prismatic crystal structure.
Formation & geological history
Forms primarily in igneous rocks such as granite and pegmatites through the cooling and crystallization of magma deep within the Earth's crust.
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 group of minerals in the Earth's crust, making up about 60% of terrestrial rocks.
Field identification & locations
Identified by its characteristic two directions of cleavage intersecting at nearly 90 degrees and moderate hardness; found globally in igneous and metamorphic terrains.
