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单词 nifontovite
释义

nifontoviten.

Brit. /nɪˈfɒntəvʌɪt/, U.S. /nəˈfɑn(t)əˌvaɪt/
Origin: A borrowing from Russian. Etymon: Russian nifontovit.
Etymology: < Russian nifontovit (S. V. Malinko & A. E. Lisitsyn 1961, in Doklady Akademii Nauk SSSR 139 188) < the name of Roman Vladimirovič Nifontov (d. 1960), Russian geologist + -it -ite suffix1.
Mineralogy.
A monoclinic hydrated borate of calcium, Ca3B6O6(OH)12.2H2O, occurring as colourless crystals.
ΘΚΠ
the world > the earth > minerals > types of mineral > borates > [noun] > calcium borate
hayesine1844
priceite1873
colemanite1884
pandermite1885
inyoite1914
meyerhofferite1914
ginorite1934
tertschite1953
nifontovite1961
nobleite1961
pentahydroborite1962
uralborite1962
1961 Mineral. Mag. 32 990 Nifontovite... Small anhedral grains in skarn deposits in the Urals.
1971 Soviet Physics: Crystallogr. 16 186/1 The description and investigation of a group of endogenic calcium metaborates: calciborite, korzhinskite, uralborite, nifontovite, frolovite, and pentahydroborite.
1994 Mineral. Mag. 58 279 Nifontovite, Ca3B6O6(OH)12.2H2O, was originally found at the Novofrolovo mine of the Turinsk ore deposit in the central Urals.
This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).
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n.1961
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