igneous
K-Feldspar Granite Fragment
Granite (Alkali Feldspar-rich)
Hardness of 6-7 on the Mohs scale, predominantly pinkish-red to white color with a vitreous to dull luster, granular phaneritic crystal structure, and poor to distinct cleavage depending on the feldspar and quartz components.
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Physical properties
Hardness of 6-7 on the Mohs scale, predominantly pinkish-red to white color with a vitreous to dull luster, granular phaneritic crystal structure, and poor to distinct cleavage depending on the feldspar and quartz components.
Formation & geological history
Formed through the slow crystallization of magma beneath the Earth's surface over millions of years, commonly associated with continental crust formation.
Uses & applications
Used in construction, as dimension stone, countertops, monument building, and decorative aggregate.
Geological facts
Granite is the most common intrusive igneous rock in the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Can be identified by its interlocking visible mineral grains of quartz, feldspar, and mica. Frequently found in mountainous regions and shield areas globally.
