Coesite: The mineral Coesite information and pictures
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: Mineral information, data and localities. - mindat.org
A high-pressure modification of SiO2. In the impact rocks, it may result from subsolidus quartz-to-coesite transformation. An interesting coesite-like ...
Coesite | Metamorphic, Quartz & High-Pressure | Britannica
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 …
The formation of impact coesite | Scientific Reports - Nature
Aug 6, 2021 · 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 and stishovite - SpringerLink
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 …
COESITE (Silicon Dioxide)
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 - an overview | ScienceDirect Topics
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 …
Structural characteristics and elasticities of coesite and coesite …
Sep 15, 2020 · Coesite, the known densest form of silica with tetrahedral coordination crystallizes in monoclinic crystal system (C2/c, Z = 16) . Since coesite was observed in the laboratory and …
3D X-ray tomographic analysis reveals how coesite is preserved …
Nov 26, 2020 · The formation of coesite-bearing frothy inclusions is here investigated through a 3D textural multiscale analysis of the vesicles contained in a MN tektite sample, combined with …
The formation of impact coesite - PMC - PubMed Central (PMC)
Coesite is one of the most common and reliable indicator of impact cratering in quartz-bearing target rocks. Its formation conditions have been a debated issue since its discovery in nature …
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