Found at sites of meteorite impact, formed by shock metamorphism of quartz at temperatures 1200 deg C and pressures �100 kbar. Quartz, tridymite, cristobalite, and coesite are polym orphs.
IMA Status:
Approved IMA 1962
Locality:
Meteor Crater, Arizona, USA. Link to MinDat.org Location Data.
Name Origin:
Named for Sergei Mikhailovich Stishov, Russian Crystallographer who, with S.V. Popova, first synthesized the compound.
Chemical Formula: 