| 释义 |
keatite Min.|ˈkiːtaɪt|
[f. the name of P. P. Keat (born 1923), U.S. chemist who first synthesized it + -ite1.]
An artificial modification of silica produced at high pressures as tetragonal crystals.
1954[see coesite]. 1955Trans. Brit. Ceramic Soc. LIV. 665 The polymerized silicic acid now crystallizes..to the crystalline tetragonal phase, keatite. 1959Zeitschr. für Kristallogr. CXII. 410 The density of keatite (50 /gr·cm3) is intermediate to that of cristobalite..and quartz. 1962C. Frondel Dana's Syst. Min. (ed. 7) III. 308 Keatite has been synthesized by heating commercial dried silica..in water containing an alkali. |