First natural occurrence of coesite

E. C. T. Chao; E.M. Shoemaker; B.M. Madsen

doi:10.1126/science.132.3421.220

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First natural occurrence of coesite

E. C. T. Chao·E.M. Shoemaker·B.M. Madsen

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Abstract

Coesite, the high-pressure polymorph of SiO 2 , hitherto known only as a synthetic compound, is identified as an abundant mineral in sheared Coconino sandstone at Meteor Crater, Arizona. This natural occurrence has important bearing on the recognition of meteorite impact craters in quartz-bearing geologic formations.

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Source-reported bounding extent: 35.02156202186545° to 35.032913044900326° latitude; -111.02989196777344° to -111.01478576660156° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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BibTeX RIS

E. C. T. Chao, E.M. Shoemaker, B.M. Madsen. 1960. First natural occurrence of coesite. https://doi.org/10.1126/science.132.3421.220

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