igneous
K-feldspar-rich granite (possibly pink pegmatitic granite)
Granite, chiefly quartz (SiO₂), potassium feldspar (KAlSi₃O₈), and plagioclase, with possible mica
AI-generated identification · may be incorrectCoarse, unevenly crystalline rock with pink-red feldspar, pale quartz, and darker mineral patches. Typical granite minerals have Mohs hardness about 6–7; the image alone does not establish exact composition or specific gravity.
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Physical properties
Coarse, unevenly crystalline rock with pink-red feldspar, pale quartz, and darker mineral patches. Typical granite minerals have Mohs hardness about 6–7; the image alone does not establish exact composition or specific gravity.
Formation & geological history
Formed by slow cooling and crystallization of silica-rich magma underground, commonly during Precambrian or younger intrusive events; the specimen’s age cannot be determined visually.
Uses & applications
Granite is used as dimension stone, paving, countertops, aggregate, and decorative material; this rough piece is mainly suitable for collecting or display.
Geological facts
Its mottled appearance reflects interlocking crystals formed during slow cooling, rather than separate colored layers.
Field identification & locations
Look for visible interlocking grains and pink feldspar alongside glassy gray quartz; common worldwide in continental plutons and exposed bedrock. A mineral or thin-section test would help confirm the identification.
