Coesite (/ ˈ k oʊ s aɪ t /) [3] is a form of silicon dioxide (Si O 2) that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (700 °C, 1,300 °F), are applied …

Coesite is a very rare mineral that forms in unique ultra high metamorphism usually as a result of meteorite impacts. It was named after American chemist Loring Coes, Jr. (1915-1978), who …

Coesite, a high-pressure polymorph (crystal form) of silica, silicon dioxide (SiO2). It has the same chemical composition as the minerals cristobalite, stishovite, quartz, and tridymite but …

A high-pressure modification of SiO2. In the impact rocks, it may result from subsolidus quartz-to-coesite transformation. An interesting coesite-like ...

2021年8月6日 · Coesite in impact rocks is traditionally considered a retrograde product formed during pressure release by the crystallisation of an amorphous phase (either silica melt or …

Coesite was synthesized in 1953 and stishovite in 1961. They are named by Sosman (1954) and by Chao et al. (1962) for their discoverers, L. Coes and S. M. Stishov, respectively. The unit …

THE MINERAL COESITE. Chemistry: SiO2, Silicon Dioxide. Class: Silicate; Group: Quartz. Uses: As an indicator of high pressure crystallization (possibly a meteorite impact) and as mineral …

Coesite, as a UHP phase of quartz, is an index mineral for UHP metamorphism. The transition pressure from quartz to coesite is above 2.8 GPa (at 600 °C) (Fig. 1 A). In most cases, coesite …

Coesite. Comments: Coesite inclusion in garnet of eclogite sample (Eur. J. Mineral, 13:567). Location: Ultra high-pressure metamorphic area of the Saidenbach reservoir, Erzgebirge, …

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. …