igneous
Tumbled pink feldspar-rich granite
Granite, composed mainly of quartz, potassium feldspar, and plagioclase, with minor dark minerals
AI-generated identification · may be incorrectCoarse crystalline texture; pink, cream, and gray, with a vitreous-to-dull luster. Typical minerals have Mohs hardness of about 6–7; granite has no consistent cleavage and specific gravity around 2.6–2.7.
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Physical properties
Coarse crystalline texture; pink, cream, and gray, with a vitreous-to-dull luster. Typical minerals have Mohs hardness of about 6–7; granite has no consistent cleavage and specific gravity around 2.6–2.7.
Formation & geological history
Formed when silica-rich magma cooled slowly underground, allowing visible crystals to grow. Granite occurs in ancient continental crust of many ages; the specimen’s exact age cannot be determined visually.
Uses & applications
Used as dimension stone, countertops, paving, and decorative aggregate; polished or tumbled pieces are sold for collecting and décor.
Geological facts
The pink color commonly comes from potassium feldspar, while gray translucent patches are likely quartz.
Field identification & locations
Look for interlocking pink feldspar and glassy quartz crystals, often with scattered darker grains; common in granitic regions worldwide. The rounded shape indicates tumbling or natural abrasion.
