mineral

Pink potassium feldspar (orthoclase/microcline)

KAlSi₃O₈; likely massive potassium feldspar, possibly with quartz

AI-generated identification · may be incorrect

Salmon-pink to pale cream, vitreous to pearly luster, Mohs hardness about 6, and two near-90° cleavage directions; crystals belong to the monoclinic or triclinic feldspar group. The specimen’s exact mineral identity cannot be confirmed from appearance alone.

Identified September 22, 2026More mineral →

Explore Pink potassium feldspar (orthoclase/microcline) in the encyclopedia →

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Physical properties

Formation & geological history

Potassium feldspar crystallizes from silica-rich magma in granites and pegmatites, commonly during Precambrian and younger geological episodes. It may also occur in metamorphic rocks.

Uses & applications

Used in glass and ceramic manufacture and as a common component of granite building stone; attractive crystals are collected as mineral specimens.

Geological facts

Feldspar is the most abundant mineral group in Earth’s crust. Pink color commonly results from trace impurities or mineral inclusions.

Field identification & locations

Look for blocky shape, pink color, and flat cleavage faces meeting nearly at right angles; distinguish it from quartz, which lacks cleavage. Common in granites and pegmatites worldwide.