Granite
What is Granite?
Granite is a coarse-grained igneous rock composed primarily of quartz, feldspar, and mica. It is a common and widely occurring type of intrusive, felsic igneous rock. Granite is typically massive, hard, and durable, making it suitable for construction and decorative purposes.
Optical Properties
- Refractive Index
- 1.544-1.563
- Birefringence
- Low
- Pleochroism
- Weak to absent
- Optical Character
- Biaxial
- Dispersion
- Low
Granite Market Value Calculator
Estimate the market value of Granite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Granite Localities Map
See where Granite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
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Quick Facts
Physical Properties
- Color
- Typically white, pink, or gray, with dark mineral grains
- Hardness (Mohs)
- 6-7
- Density
- 2.65 - 2.75 g/cm³
- Streak
- White to gray
Chemical Properties
- Chemical Formula
- Complex silicate
- Elements
- Silicon, Oxygen, Aluminum, Potassium, Sodium, Calcium, Iron
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