Rock Identifier
Red feldspar-rich rock, possibly potassium feldspar (Likely orthoclase or microcline (KAlSi₃O₈), though the image is insufficient for a definitive identification) — mineral
mineral

Red feldspar-rich rock, possibly potassium feldspar

Likely orthoclase or microcline (KAlSi₃O₈), though the image is insufficient for a definitive identification

AI-generated identification · may be incorrect

Opaque salmon-red to pink, with a vitreous-to-dull luster and irregular fracture; feldspar hardness is about 6 Mohs. Crystal structure and cleavage cannot be determined reliably from this small, rough specimen.

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Physical properties

Opaque salmon-red to pink, with a vitreous-to-dull luster and irregular fracture; feldspar hardness is about 6 Mohs. Crystal structure and cleavage cannot be determined reliably from this small, rough specimen.

Formation & geological history

If feldspar, it crystallized from silica-rich magma or formed in pegmatite; feldspars occur in rocks spanning much of geological time. The specimen’s exact origin and age are unknown.

Uses & applications

Feldspar is used in ceramics and glass; attractive pieces may be polished or collected, but this fragment has no obvious gem quality.

Geological facts

Pink feldspar commonly gets its color from trace iron; distinguishing potassium feldspar from other pink minerals may require tests or laboratory analysis.

Field identification & locations

Look for pink color, hardness near 6, and two near-right-angle cleavage directions; feldspar is widespread in granites and pegmatites worldwide. A photo alone cannot confirm the identification.