igneous
Granite
Phaneritic Felsic Igneous Rock
Hardness: 6-7 (Mohs); Color: Pinkish-tan with white and black grains; Luster: Dull to vitreous; Crystal Structure: Phaneritic (coarsegrained, interlocking); Specific Gravity: 2.63-2.75
- Hardness
- 6-7 (Mohs)
- Color
- Pinkish-tan with white and black grains
- Luster
- Dull to vitreous
Identified More igneous →
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Physical properties
Hardness: 6-7 (Mohs); Color: Pinkish-tan with white and black grains; Luster: Dull to vitreous; Crystal Structure: Phaneritic (coarsegrained, interlocking); Specific Gravity: 2.63-2.75
Formation & geological history
Formed by the slow crystallization of magma below Earth's surface. Primarily found in continental crust and mountain ranges, often dating from the Precambrian to Cenozoic eras.
Uses & applications
Extensively used as a dimension stone in construction, countertops, floor tiles, and monuments due to its durability and aesthetic appeal.
Geological facts
Granite is the most common igneous rock found on Earth's continents. It is rich in quartz and feldspar, which gives it its characteristic hardness and light colors.
Field identification & locations
Identify by its 'salt and pepper' appearance and large, interlocking mineral grains. It is often found in mountainous regions or as glacial erratics.
