igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale; Color: Varies widely (pink, gray, white) with dark mineral flecks; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained, visible crystals); Specific Gravity: 2.65-2.75
- Hardness
- 6-7 on Mohs scale
- Color
- Varies widely (pink, gray, white) with dark mineral flecks
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Varies widely (pink, gray, white) with dark mineral flecks; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained, visible crystals); Specific Gravity: 2.65-2.75
Formation & geological history
Formed from the slow cooling of magma rich in silica and alkali metal oxides deep underground, typically over millions of years.
Uses & applications
Used extensively in construction, countertops, monuments, floor tiles, and curbing due to its high durability.
Geological facts
Granite is the most common intrusive rock in Earth's continental crust and is frequently found in major mountain ranges.
Field identification & locations
Identifiable by its visible interlocking crystals of quartz, feldspar, and micas. Found globally in continental shields and intrusive plutons.
