igneous
Granite
Phaneritic Felsic/Intermediate Igneous Rock
Hardness: 6-7 on Mohs scale; Color: Varies widely (pink, gray, white) with dark specks; Luster: Dull to vitreous; Crystal structure: Coarse-grained (phaneritic) interlocking crystal texture; Specific Gravity: 2.65 - 2.75
- Hardness
- 6-7 on Mohs scale
- Color
- Varies widely (pink, gray, white) with dark specks
- Luster
- Dull to vitreous
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Physical properties
Hardness: 6-7 on Mohs scale; Color: Varies widely (pink, gray, white) with dark specks; Luster: Dull to vitreous; Crystal structure: Coarse-grained (phaneritic) interlocking crystal texture; 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 underground within the Earth's crust over millions of years.
Uses & applications
Widely used in construction for dimensional stone, countertops, floor tiles, curbing, and monuments due to its extreme durability and load-bearing strength.
Geological facts
Granite is the most common rock of Earth's continental crust and is rarely found anywhere else in the solar system. It forms the core of many major mountain ranges.
Field identification & locations
Easily identified by its distinctive 'salt and pepper' or pink-speckled appearance with visible interlocking crystals of quartz, feldspar, and mica. Found globally in shield areas and mountain roots.
