mineral

Pink feldspar fragment (likely potassium feldspar)

K-feldspar, commonly orthoclase or microcline; approximate formula KAlSi₃O₈

AI-generated identification · may be incorrect

Opaque, salmon-pink with a vitreous to dull luster and blocky-looking fracture; feldspar hardness is about 6 Mohs, with two near-right-angle cleavage directions. The small, rough fragment does not show enough detail for a definitive identification.

Identified October 15, 2026More mineral →

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Physical properties

Formation & geological history

K-feldspar crystallizes as magma cools, especially in granite and pegmatite, and also occurs in metamorphic rocks. Its age depends on its source rock and cannot be determined from the image.

Uses & applications

Feldspar is used in glass and ceramic production; attractive crystals and specimens are collected, while suitable material may be cut as gemstone varieties.

Geological facts

Pink color commonly comes from trace iron or other inclusions, but color alone does not identify feldspar.

Field identification & locations

Look for two cleavages meeting near 90° and hardness around 6; common in granites and pegmatites worldwide. A scratch test or close inspection of cleavage would help distinguish it from other pink minerals.