igneous
Quartz-rich granite (likely weathered granite)
Granite, a coarse-grained felsic intrusive igneous rock, composed chiefly of quartz and feldspar with minor mica
AI-generated identification · may be incorrectPale gray-white with scattered dark mineral flecks and a rough, granular texture; quartz hardness 7 and feldspar about 6 Mohs. The image does not show enough detail to confirm individual minerals or crystal boundaries.
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Physical properties
Pale gray-white with scattered dark mineral flecks and a rough, granular texture; quartz hardness 7 and feldspar about 6 Mohs. The image does not show enough detail to confirm individual minerals or crystal boundaries.
Formation & geological history
Forms when silica-rich magma cools slowly underground, allowing crystals to grow; granite occurs in ancient continental crust of many geological ages.
Uses & applications
Used as building and dimension stone, paving, crushed aggregate, and decorative material; this small rough piece is mainly suitable for collecting.
Geological facts
Granite is a rock rather than a single mineral, and its visible grains commonly include quartz, feldspar, and mica.
Field identification & locations
Look for interlocking, visible light-colored grains with occasional dark flecks; unlike a single-mineral quartz specimen, granite has a mixed-grain appearance. Found widely in continental mountain belts and exposed plutons.
