mineral

Pink feldspar pebble (likely potassium feldspar)

Likely orthoclase or microcline, KAlSi₃O₈; identification is uncertain from the image alone

AI-generated identification · may be incorrect

A small pink, dark-speckled, apparently polished pebble. Feldspar has Mohs hardness 6, a vitreous to pearly luster, and two cleavage directions near 90°; crystal structure is monoclinic (orthoclase) or triclinic (microcline).

Identified October 2, 2026More mineral →

Explore Pink feldspar pebble (likely potassium feldspar) in the encyclopedia →

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Physical properties

Formation & geological history

Potassium feldspar crystallizes in silica-rich igneous rocks such as 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 widely used in glass and ceramics; attractive pieces may be used in jewelry or collected.

Geological facts

Pink color commonly comes from trace iron or other impurities; dark spots may be inclusions or surface marks.

Field identification & locations

Look for pink color, hardness near 6, and two near-right-angle cleavage planes; common sources include granites and pegmatites worldwide. A photo cannot confirm the mineral or whether the dark marks are inclusions.