igneous
Granite
Felsic intrusive igneous rock
Hardness: 6-7 on Mohs scale. Color: Varies widely (pink, white, grey, black) due to mineral content. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained, visible 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) due to mineral content. Luster: Vitreous to dull. Crystal structure: Phaneritic (coarse-grained, visible crystals). Specific gravity: 2.65-2.75.
Formation & geological history
Forms from the slow crystallization of magma below Earth's surface over millions of years. Common in continental crust.
Uses & applications
Widely used in construction, monuments, flooring, countertops, and architectural facing.
Geological facts
Granite is the most common plutonic rock on Earth and forms the core of many major mountain ranges.
Field identification & locations
Easily identified by its speckled appearance composed of interlocking crystals of quartz, feldspar, and mica. Found globally in shield areas and mountainous regions.
