mineral

Pink Feldspar

Potassium Feldspar (Microcline or Orthoclase), KAlSi3O8

AI-generated identification · may be incorrect

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.

Identified August 3, 2026More mineral →

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Physical properties

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.