igneous
Granite
Intrusive Igneous Rock (Felsic)
Hardness: 6 on the Mohs scale. Color: Varies widely (pink, gray, white) depending on mineral content. Luster: Dull to vitreous. Crystal structure: Phanertic, coarse-grained with visible mineral crystals. Specific gravity: 2.65 - 2.75.
- Hardness
- 6 on the Mohs scale
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6 on the Mohs scale. Color: Varies widely (pink, gray, white) depending on mineral content. Luster: Dull to vitreous. Crystal structure: Phanertic, coarse-grained with visible mineral crystals. Specific gravity: 2.65 - 2.75.
Formation & geological history
Formed from the slow cooling of magma rich in silica and alkali metals deep underground over millions of years.
Uses & applications
Used extensively in construction, countertops, monuments, building stone, and decorative paving.
Geological facts
Granite makes up a major part of Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its speckled appearance with visible interlocking crystals of quartz, feldspar, and mica. Found worldwide in continental shields and mountain ranges.
