Coesite
A variety of Minerals
What is Coesite?
Coesite is a form (polymorph) of silicon dioxide SiO2 that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (700 °C, 1,300 °F), are applied to quartz. Coesite was first synthesized by Loring Coes Jr., a chemist at the Norton Company, in 1953.
Coesite Market Value Calculator
Estimate the market value of Coesite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Coesite Localities Map
See where Coesite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Map preview
North ZoneCentral RidgeSouth Basin
Quick Facts
Physical Properties
- Color
- Colourless
- Hardness (Mohs)
- 7.5 - 8
- Density
- 2.92 g/cm³
Chemical Properties
- Chemical Formula
- SiO2
- Elements
- O, Si
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