igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, grey, black) depending on mineral content. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals). Specific gravity: 2.65-2.75.
- Hardness
- 6-7 on Mohs scale
- Luster
- Vitreous to dull
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Physical properties
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, grey, black) depending on mineral content. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained, visible interlocking crystals). Specific gravity: 2.65-2.75.
Formation & geological history
Formed from the slow cooling and solidification of magma rich in silica, potassium, and sodium, trapped beneath the Earth's surface over millions of years.
Uses & applications
Widely used in construction for countertops, flooring, monuments, and curbing due to its high durability and resistance to weathering.
Geological facts
Granite is the most common intrusive rock of Earth's continental crust and is often found in core areas of mountain ranges.
Field identification & locations
Identified by its distinctive speckled appearance featuring visible interlocking mineral grains (quartz, feldspar, and mica). Found globally in shield areas and mountainous regions.
