igneous
Granite
Intrusive igneous felsic rock
Hardness: 6-7 on Mohs scale; Color: salt-and-pepper appearance with white (quartz), pink/gray (feldspar), and black (biotite/hornblende); Luster: vitreous to dull; Structure: phaneritic (large visible crystal grains)
- Hardness
- 6-7 on Mohs scale
- Luster
- vitreous to dull
Identified More igneous →
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Physical properties
Hardness: 6-7 on Mohs scale; Color: salt-and-pepper appearance with white (quartz), pink/gray (feldspar), and black (biotite/hornblende); Luster: vitreous to dull; Structure: phaneritic (large visible crystal grains)
Formation & geological history
Formed by the slow cooling of silica-rich magma deep underground. It is an intrusive rock that can be found in continental crust across all geological ages, often forming large batholiths.
Uses & applications
Extensively used in construction for countertops, floor tiles, paving stones, and memorial monuments due to its durability and aesthetic appeal.
Geological facts
Granite is one of the most common rocks on Earth's continents and makes up much of the continental crust. It is extremely resistant to weathering compared to other rock types.
Field identification & locations
Identify in the field by its speckled, interlocking crystalline texture where individual minerals are visible to the naked eye. Found globally in mountainous regions and shield areas.
