mineral

Raw pink feldspar (likely orthoclase or microcline)

Potassium feldspar, KAlSi₃O₈

AI-generated identification · may be incorrect

Pale pink to salmon, translucent to semi-opaque, with vitreous to pearly luster and prominent cleavage surfaces. Mohs hardness 6–6.5; crystalline structure is monoclinic (orthoclase) or triclinic (microcline), with cleavage near 90° and specific gravity about 2.55–2.63.

Identified August 19, 2026More mineral →

Explore Raw pink feldspar (likely orthoclase or microcline) in the encyclopedia →

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Physical properties

Formation & geological history

Forms when potassium-rich magma crystallizes in coarse-grained igneous rocks such as granite and pegmatite; it may also occur in metamorphic rocks. The specimen’s exact geological age and locality cannot be determined from the image.

Uses & applications

Used in ceramics, glass, enamel, and feldspar mineral collections; attractive pink crystals can be lapidary material, though this piece appears primarily a specimen rather than a gemstone.

Geological facts

Pink coloration commonly results from trace iron and structural defects. Feldspar is the most abundant mineral group in Earth’s crust.

Field identification & locations

Look for two intersecting cleavage planes, relatively low hardness compared with quartz, and pink blocky fragments; a steel file may scratch it, while quartz should not. Common worldwide, especially in granite and pegmatite regions.