igneous
Coarse-grained granite
Granite, chiefly quartz, feldspar, and mica
AI-generated identification · may be incorrectLight-colored, coarse and irregularly crystalline, with interlocking quartz and feldspar grains and darker mica. Typical hardness is about 6–7 Mohs; no consistent cleavage at the rock scale.
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Physical properties
Light-colored, coarse and irregularly crystalline, with interlocking quartz and feldspar grains and darker mica. Typical hardness is about 6–7 Mohs; no consistent cleavage at the rock scale.
Formation & geological history
Likely formed as magma cooled slowly deep in the crust, allowing large crystals to grow. The specimen’s age cannot be determined from the image; granites range from Archean to recent geological periods.
Uses & applications
Granite is widely used as building and dimension stone, countertops, paving, and decorative aggregate; this small rough piece is mainly suitable for collecting.
Geological facts
The pale, blocky grains are consistent with feldspar and quartz, while darker flecks may be mica or other minerals.
Field identification & locations
Identify it by its visible, interlocking light and dark mineral grains and lack of layering. Granite is common in continental crust worldwide; a photo alone cannot confirm the exact rock type or locality.
