| 释义 |
preobrazhenskite Min.|priːəʊbrəˈʒɛnskaɪt|
[ad. Russ. preobrazhenskit (Ya. Ya. Yarzhensky 1956, in Dokladȳ Akad. Nauk SSSR CXI. 1087), f. the name of P. I. Preobrazhensky (1874–1944), investigator of Russian salt deposits: see -ite1.]
A hydrated magnesium borate found as nodules in salt deposits in Kazakhstan.
1957Amer. Mineralogist XLII. 704 Preobrazhenskite... It occurs in colorless, lemon-yellow, and dark gray nodules in fine-grained halite-polyhalite rock. 1972Soviet Physics: Doklady XVI. 519/1 The equation of preobrazhenskite so obtained corresponded to the chemical composition 3MgO.5·5B2O3.4·5H2O, but not 3MgO.5B2O3.4·5H2O as originally proposed. Ibid., The most important crystal-chemical complex in the structure of preobrazhenskite comprises a set of infinite boron-oxygen chains perpendicular to the b axis with a new type of radical; the repeated link in each chain comprises four triple boron-oxygen rings..and two additional BO2(OH)2 tetrahedra. |