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Stishovite, Magadiite, Kenyaite, Coesite


Stishovite : SiO2, Magadiite : NaSi7O13(OH)3·3H2O, Kenyaite : Na2Si22O41(OH)8·6H2O, Coesite : SiO2

Photo Copyright © specimen collection and photo Peter Kohorst  - This image is copyrighted. Unauthorized reproduction prohibited.
Locality: Bisbee area, Warren District, Mule Mts, Cochise Co., Arizona, USA
Tiny (< 1 mm) greyish-white, roundish aggregates of the high pressure mineral Stishovite on a matrix of Magadiite-Kenyaite-Coesite. Field of view 3 mm.
The source of 'forming' the Stishovite was extreme heat by an meteorite impact near Bisbee, Arizona. The exact location and the year of impact is unknown.

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