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Keatite
Keatite is a silicate mineral with the chemical formula SiO2 (silicon dioxide) that was discovered in 2013. It is a tetragonal polymorph of silica first known as a synthetic phase.〔 Ralph, Jolyon, and Ida Ralph. "Keatite: Keatite Mineral Information and Data." MinDat. 2013. Aug. 2013 .〕 It was reported as minute inclusions within clinopyroxene (diopside) crystals in an ultra high pressure garnet pyroxenite body. The host rock is part of the Kokchetav Massif in Kazakhstan.〔Hill, Tina R., Hiromi Konishi, and Huifang Xu, ''Natural occurrence of keatite precipitates in UHP clinopyroxene from the Kokchetav Massif: A TEM investigation,'' American Mineralogist, Volume 98, pages 187–196, 2013 (Abstract )〕 ==References==
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