mineral

Pink feldspar pebble

Likely potassium feldspar (orthoclase or microcline; KAlSi₃O₈)

AI-generated identification · may be incorrect

Small, pink, opaque, blocky piece with a dull to slightly vitreous luster; feldspar hardness is about 6 on the Mohs scale, with two cleavages near 90°. The image does not show enough detail to confirm its identity.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Feldspar crystallizes in cooling magma, especially in granite and pegmatite, and may later weather into loose grains or pebbles. Its age depends on its source rock and cannot be determined from the photo.

Uses & applications

Feldspar is widely used in glass and ceramic production; attractive crystals and polished pieces are collected or used decoratively.

Geological facts

Potassium feldspar commonly forms pink crystals and is one of the main minerals in many granites.

Field identification & locations

Look for a blocky shape, pink color, and two approximately perpendicular cleavage faces; distinguishing feldspar from similar minerals requires closer inspection. Common in granites and pegmatites worldwide.