igneous
Pegmatitic quartz–feldspar rock
Quartz and feldspar-rich pegmatite (exact identification requires testing)
AI-generated identification · may be incorrectCoarse, pale cream and pink, with a rough, granular appearance. Likely dominated by quartz (Mohs 7; glassy) and feldspar (Mohs 6; commonly blocky cleavage); crystals are too indistinct in the image to identify confidently.
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Physical properties
Coarse, pale cream and pink, with a rough, granular appearance. Likely dominated by quartz (Mohs 7; glassy) and feldspar (Mohs 6; commonly blocky cleavage); crystals are too indistinct in the image to identify confidently.
Formation & geological history
Likely crystallized from silica-rich magma in a slowly cooling, volatile-rich vein or pocket. Pegmatites formed across many geologic ages, commonly near granitic intrusions.
Uses & applications
Quartz and feldspar are used in glass, ceramics, and construction materials; attractive pegmatite can be collected or cut for display.
Geological facts
The pale pink coloration may come from potassium feldspar, but the photo alone cannot confirm its mineral proportions or rule out other light-colored rocks.
Field identification & locations
Look for interlocking, unusually coarse quartz and feldspar grains and test hardness or cleavage; common in granitic terrains worldwide. A hand specimen like this is typically worth about $1–$20, depending on size and appearance.
