mineral
Pink Feldspar
Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8
Hardness of 6 on the Mohs scale, pink to salmon-red color, vitreous to pearly luster, monoclinic or triclinic crystal structure, distinct cleavage in two directions at near 90-degree angles, specific gravity of 2.5 to 2.6.
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Physical properties
Hardness of 6 on the Mohs scale, pink to salmon-red color, vitreous to pearly luster, monoclinic or triclinic crystal structure, distinct cleavage in two directions at near 90-degree angles, specific gravity of 2.5 to 2.6.
Formation & geological history
Forms primarily in felsic igneous rocks such as granite and pegmatites through slow cooling of magma, as well as in some metamorphic and detrital sedimentary environments.
Uses & applications
Used extensively in the manufacturing of ceramics, glass, porcelain, and as a mild abrasive in scouring powders. Also utilized as a gemstone and ornamental stone.
Geological facts
Feldspar is the most abundant mineral group in the Earth's crust, making up about 60% of the Earth's rocks. The pink color is typically caused by microscopic hematite inclusions within the crystal lattice.
Field identification & locations
Easily identified by its characteristic pink or salmon color, rectangular cleavage faces, and hardness that scratches glass. Commonly found worldwide in pegmatite dikes and granitic terrains.
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Metamorphic
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral