igneous
Granite
Phaneritic Felsic Igneous Rock
Hardness: 6-7 on Mohs scale; Color: Pink, white, gray, or black with a speckled appearance; Luster: Vitreous to dull; Crystal structure: Coarse-grained (phaneritic) interlocking mineral crystals; Specific gravity: 2.65-2.75
- Hardness
- 6-7 on Mohs scale
- Color
- Pink, white, gray, or black with a speckled appearance
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Pink, white, gray, or black with a speckled appearance; Luster: Vitreous to dull; Crystal structure: Coarse-grained (phaneritic) interlocking mineral crystals; Specific gravity: 2.65-2.75
Formation & geological history
Formed from the slow cooling and crystallization of magma rich in silica and alkali feldspar deep beneath the Earth's surface over millions of years.
Uses & applications
Widely used in construction, architecture, countertops, monuments, and curbing due to its high durability and resistance to weathering.
Geological facts
Granite is the most common plutonic rock in the Earth's crust and forms the core of many major mountain ranges. It is exceptionally durable and has been used as a building material since ancient times.
Field identification & locations
Easily identified in the field by its distinct visible interlocking mineral grains, primarily quartz, feldspar, and mica. Commonly found in continental shields and mountain belts worldwide.
