Characterization of a high-pressure phase of silica from the Martian meteorite Shergotty
@article{Dera2001CharacterizationOA, title={Characterization of a high-pressure phase of silica from the Martian meteorite Shergotty}, author={P. Dera and C. T. Prewitt and N. Boctor and R. Hemley}, journal={American Mineralogist}, year={2001}, volume={87}, pages={1018 - 1023} }
Abstract Recently, there has been substantial interest in post-stishovite high-pressure polymorphs of SiO2, discovered as extraterrestrial minerals, or synthesized in the laboratory. Previous investigators reported the presence of “α-PbO2-like” and “baddeleyite-like” SiO2 in the Martian meteorite Shergotty, and also the synthesis of an a-PbO2-like phase at pressures of 60-80 GPa in a laser-heated diamond anvil cell. To provide definitive information about the nature of the natural “a-PbO2 phase… CONTINUE READING
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