Mineralogy Database

Coesite Mineral Data

Search Webmineral :

General Coesite Information

Help on Chemical  Formula: Chemical Formula: SiO2
Help on Composition: Composition: Molecular Weight = 60.08 gm
   Silicon  46.74 %  Si  100.00 % SiO2
   Oxygen   53.26 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (SiO2)
Help on Environment: Environment: High temperature and high pressure polymorph of quartz (500-800 deg C, ~ 30-35 kbar). Formed in impact craters and ultra-high-pressure eclogite rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1954
Help on Locality: Locality: Metor Crater, Cononino County, Arizona, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Loring Coes, Jr. (1915-1973), American chemist, Norton Company, who first synthesized the phase.
Help on Synonym: Synonym: ICSD 18112
  PDF 14-654