preobrazhenskiten.
/ˌpriːəʊbrəˈʒɛnskʌɪt/, U.S. /ˈˌpriˌoʊbrəˈʒɛnˌskaɪt/ Mineralogy.
A rare mineral of the orthorhombic crystal system consisting of a basic magnesium borate, Mg3B11O15(OH)9, and occurring as colourless, lemon-yellow, or dark grey nodules in salt deposits in Kazakhstan.
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the world > the earth > minerals > types of mineral > borates > [noun] > magnesium borate
boracite1811
stassfurtite1858
szaibelyite1866
parasite1868
pinnoite1885
inderite1937
kurnakovite1940
preobrazhenskite1957
1957 Amer. Mineralogist 42 704 Preobrazhenskite... It occurs in colorless, lemon-yellow, and dark gray nodules in fine-grained halite-polyhalite rock.
1972 Soviet Physics: Doklady 16 519/1 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.
1994 Canad. Mineralogist 32 387 Preobrazhenskite..has been found only in the Inder borate deposits of western Kazakhstan. It occurs in small amounts throughout the saliferous strata.
This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022).
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n.1957