coesite
Sign in to saveCoesite () is a form (polymorph) of silicon dioxide (SiO2) that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (), are applied to quartz. Coesite was first synthesized by Loring Coes, Jr., a chemist at the Norton Company, in 1953.
Key facts
- Mineral.name
- Coesite
- Mineral.image
- Coesiteimage.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Crossed-polars image of coesite grain (gray) ~1 mm across in eclogite. Small, colored inclusion is pyroxene. Polycrystalline rim is quartz.
- Mineral.category
- Tectosilicate minerals
- Mineral.group
- Quartz group
- Mineral.molweight
- 60.0843 g/mol
- Mineral.IMAsymbol
- Coe
- Mineral.strunz
- 4.DA.35
- Mineral.system
- Monoclinic
- Mineral.class
- Prismatic (2/m) (same H–M symbol)
- Mineral.symmetry
- C2/c
- Mineral.unit cell
- a = 7.143b = 12.383c = 7.143 [Å]β = 120.00°Z = 16
- Mineral.color
- Colorless
- Mineral.habit
- Inclusions in UHP metamorphic minerals up to 3 mm in size
- Mineral.fracture
- Conchoidal
- Mineral.tenacity
- Brittle
- Mineral.mohs
- 7.5-8
via Wikipedia infobox
Wikidata facts
- Image
- Coesiteimage.jpg
Show 6 more facts
- Commons category
- Coesite
- Nickel-Strunz 9th edition (updated 2009)
- 4.DA.35
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.DA.35
- chemical formula
- SiO₂
- IMA Mineral Symbol
- Coe
- Strunz 8th edition (series ID, updated)
- IV/D.01b
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Article
5 sectionsContents
- Occurrences
- Crystal structure
- See also
- References
- External links
Coesite () is a form (polymorph) of silicon dioxide (SiO2) that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (), are applied to quartz. Coesite was first synthesized by Loring Coes, Jr., a chemist at the Norton Company, in 1953.
==Occurrences==
Gallery (4)
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