igneous
Pink granite
Granite, chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende
AI-generated identification · may be incorrectCoarse-grained, pink to salmon with black flecks; interlocking crystalline texture, vitreous to dull luster, no obvious cleavage as a whole. Individual minerals are typically Mohs 6–7 (feldspar about 6, quartz 7); specific gravity ~2.63–2.75.
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Physical properties
Coarse-grained, pink to salmon with black flecks; interlocking crystalline texture, vitreous to dull luster, no obvious cleavage as a whole. Individual minerals are typically Mohs 6–7 (feldspar about 6, quartz 7); specific gravity ~2.63–2.75.
Formation & geological history
An intrusive igneous rock formed when silica-rich magma slowly cooled and crystallized deep within continental crust, commonly during Precambrian to Phanerozoic plutonic events.
Uses & applications
Widely used as dimension stone, countertops, monuments, paving, aggregate, and crushed stone; attractive hand specimens are collected but usually have modest value.
Geological facts
The pink color mainly reflects potassium feldspar, while dark grains are biotite or hornblende and translucent grains are quartz. This specimen appears weathered and possibly slightly pegmatitic, with unusually large feldspar crystals.
Field identification & locations
Identify it by its coarse interlocking grains, pink feldspar, gray-clear quartz, and black mica/amphibole; it is not layered or foliated. Common worldwide in continental shields and granite batholiths, including India, Brazil, Scandinavia, Canada, and the United States.
