igneous
Pink Feldspar
Orthoclase (KAlSi3O8)
Hardness: 6 (Mohs scale), Color: Pink to salmon orange, Luster: Vitreous to pearly, Crystal structure: Monoclinic, Cleavage: Two directions at 90 degrees, SG: 2.56
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Physical properties
Hardness: 6 (Mohs scale), Color: Pink to salmon orange, Luster: Vitreous to pearly, Crystal structure: Monoclinic, Cleavage: Two directions at 90 degrees, SG: 2.56
Formation & geological history
Formed in igneous rocks like granite and syenite through slow cooling of magma within the Earth's crust, often in pegmatite veins.
Uses & applications
Used in the manufacture of glass and ceramics, as a filler in paint and plastics, and occasionally as a minor gemstone or decorative stone.
Geological facts
Feldspar is the most abundant mineral group in the Earth's crust. Pink feldspar specifically is what gives pink granite its distinctive color.
Field identification & locations
Identifiable in the field by its blocky shape, pink color, and pearly cleavage planes. Commonly found in mountainous regions with exposed granite batholiths.
