igneous
Granite with Biotite and Iron Oxide
Intrusive Igneous Rock
AI-generated identification · may be incorrectHardness of 6-7 on the Mohs scale, coarse-grained texture, composed of quartz, feldspar, and biotite mica with reddish-brown iron staining.
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Physical properties
Hardness of 6-7 on the Mohs scale, coarse-grained texture, composed of quartz, feldspar, and biotite mica with reddish-brown iron staining.
Formation & geological history
Formed from the slow cooling and crystallization of magma beneath the Earth's surface over millions of years.
Uses & applications
Used primarily in construction, countertops, monuments, and architectural facings.
Geological facts
Granite is the most common igneous rock in the Earth's continental crust and provides the foundation for many mountain ranges.
Field identification & locations
Identify by visible interlocking mineral crystals of quartz, pink or white feldspar, and dark biotite flecks. Found globally in shield areas and mountain roots.
