mineral
Feldspar
Feldspar Group (Tectosilicate)
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale; color ranges from white, gray, pink, to green; vitreous to pearly luster; monoclinic or triclinic crystal system.
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Physical properties
Hardness of 6 on the Mohs scale; color ranges from white, gray, pink, to green; vitreous to pearly luster; monoclinic or triclinic crystal system.
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, and as a gemstone in decorative jewellery.
Geological facts
Feldspar is the most abundant mineral group in the Earth's crust, making up about 60% of the terrestrial crust.
Field identification & locations
Identified by its two planes of cleavage meeting at or near 90 degrees and its distinctive rectangular crystal habit; found globally.
