igneous
Granite
Granite (Felsic Plutonic Rock)
Hardness: 6-7 on Mohs scale; Color: Salt and pepper appearance with pink, gray, and black flecks; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained) with interlocking crystals of quartz, feldspar, and mica.
- Hardness
- 6-7 on Mohs scale
- Color
- Salt and pepper appearance with pink, gray, and black flecks
- Luster
- Vitreous to dull
Identified More igneous →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-7 on Mohs scale; Color: Salt and pepper appearance with pink, gray, and black flecks; Luster: Vitreous to dull; Crystal structure: Phaneritic (coarse-grained) with interlocking crystals of quartz, feldspar, and mica.
Formation & geological history
Formed through the slow crystallization of magma below the Earth's surface (intrusive). Found in continental crust plates, often dating back hundreds of millions to billions of years.
Uses & applications
Extensively used in construction, countertops, monuments, floor tiles, and as a decorative stone in landscaping.
Geological facts
Granite makes up a large portion of the Earth's continental crust. It is one of the hardest and most durable common stones, making it the preferred material for kitchen counters.
Field identification & locations
Identify by its 'salt and pepper' texture and coarse grains. Common in mountain ranges and glacial deposits. For collectors, look for unique pink potassium feldspar variations.
