igneous
Granite (Phaneritic)
Granite (Plutonic Igneous Rock)
Hardness: 6-7 Mohs; Color: Pink (orthoclase feldspar), grey/white (quartz), black (biotite/hornblende); Luster: Vitreous to dull; Structure: Phaneritic (coarse-grained); Specific Gravity: 2.63-2.75
- Hardness
- 6-7 Mohs
- Luster
- Vitreous to dull
Identified More igneous →
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Physical properties
Hardness: 6-7 Mohs; Color: Pink (orthoclase feldspar), grey/white (quartz), black (biotite/hornblende); Luster: Vitreous to dull; Structure: Phaneritic (coarse-grained); Specific Gravity: 2.63-2.75
Formation & geological history
Formed by the slow crystallization of magma below Earth's surface in large intrusions called batholiths. This process takes millions of years, allowing large crystals to grow. Common in continental crust.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, and monuments due to its durability and aesthetic appeal.
Geological facts
Granite is one of the hardest and oldest rocks in the world. Many of the world's most famous mountain peaks, like El Capitan in Yosemite, are composed of massive granite blocks.
Field identification & locations
Identify by its salt-and-pepper appearance with distinct interlocking crystals. It is found globally in mountainous regions or where ancient shields are exposed. Look for the glint of mica and the blocky pink/white feldspars.
