igneous
Granite
Granite, a coarse-grained felsic intrusive igneous rock composed mainly of quartz, feldspar, and mica
AI-generated identification · may be incorrectLight gray to cream with dark mineral flecks and a visibly granular texture; likely quartz (Mohs 7), feldspars (about 6), and mica (2–3). Luster is mostly dull to vitreous; crystals are interlocking, with no consistent cleavage at the rock scale.
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Physical properties
Light gray to cream with dark mineral flecks and a visibly granular texture; likely quartz (Mohs 7), feldspars (about 6), and mica (2–3). Luster is mostly dull to vitreous; crystals are interlocking, with no consistent cleavage at the rock scale.
Formation & geological history
Formed when silica-rich magma cooled slowly underground, allowing visible crystals to grow. Granite bodies occur in continental crust and range widely in geological age.
Uses & applications
Commonly used as building and paving stone, countertops, aggregate, and decorative material; this small rough fragment has little commercial value.
Geological facts
Granite is a rock, not a single mineral; its exact mineral proportions and classification require closer examination.
Field identification & locations
The visible mixture of pale crystals and dark flecks suggests granite, though the photo alone cannot confirm it. Granite is widespread in continental regions; a hand lens and fresh fracture help distinguish its minerals.
