igneous
Small quartz-rich stone, possibly granite fragment
Indeterminate; likely quartz (SiO₂) with feldspar and/or mica
AI-generated identification · may be incorrectGray-white, irregular granular specimen with a dull to slightly vitreous luster; individual grains are too small to resolve confidently. Quartz hardness is 7 Mohs; granite typically has hardness around 6–7, no consistent cleavage, and specific gravity near 2.6–2.7.
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Physical properties
Gray-white, irregular granular specimen with a dull to slightly vitreous luster; individual grains are too small to resolve confidently. Quartz hardness is 7 Mohs; granite typically has hardness around 6–7, no consistent cleavage, and specific gravity near 2.6–2.7.
Formation & geological history
If granite, it formed by slow crystallization of silica-rich magma deep in Earth’s crust, commonly during Precambrian to younger intrusive events. The image alone cannot establish its exact mineralogy or age.
Uses & applications
Comparable material is used as aggregate, building stone, countertops, and landscaping rock; this tiny fragment has negligible practical or jewelry value.
Geological facts
The specimen appears natural rather than manufactured, but its small size and limited visible detail prevent reliable species-level identification.
Field identification & locations
Look for interlocking visible grains, quartz’s glassy fracture, and feldspar’s blocky cleavage; a streak, hardness, and close-up examination would help distinguish granite from quartzite or ordinary crushed stone. Common sources include weathered continental crust and transported gravel.
