Coesite forms instead of quartz at pressures greater than about 17 kilobars.
He discovered the expected material, including shocked quartz (coesite), a form of quartz that has a microscopically unique structure caused by intense pressure and high temperature.
He found a ring of ejected material that included shocked quartz (coesite), a form of quartz that has a microscopically unique structure caused by intense pressure.
Some have been buried deeper than 100 kilometers, yet surfaced fast enough to preserve rare metastable minerals like diamonds and coesite (high-pressure quartz).
This trigonal, quartz-like network undergoes a coesite-like transformation to monoclinic β-B2O3 at several gigapascals (9.5 GPa).[13]
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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