mineral
Peach-colored feldspar (likely potassium feldspar)
Orthoclase or microcline, KAlSi₃O₈
AI-generated identification · may be incorrectHardness about 6 Mohs; pale peach to cream, translucent to opaque, vitreous-to-pearly luster, monoclinic or triclinic crystals, with two near-90° cleavage directions. The rough, uneven fragment limits confident identification from appearance alone.
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Physical properties
Hardness about 6 Mohs; pale peach to cream, translucent to opaque, vitreous-to-pearly luster, monoclinic or triclinic crystals, with two near-90° cleavage directions. The rough, uneven fragment limits confident identification from appearance alone.
Formation & geological history
Forms during slow cooling of silica-rich magma in granites and pegmatites; also occurs in metamorphic rocks. Its age depends on the host deposit and may range from millions to billions of years.
Uses & applications
Feldspar is widely used in glass and ceramic manufacture; attractive material is sometimes cut or polished for decorative objects and jewelry.
Geological facts
Pink and peach colors commonly result from trace impurities. Feldspar is one of Earth’s most abundant mineral groups.
Field identification & locations
Look for its blocky shape, two nearly perpendicular cleavage faces, and hardness that scratches glass; it is common in granites and pegmatites worldwide. A photo alone cannot distinguish feldspar reliably from other pale minerals.
