nifontovite Min.
(nɪˈfɒntəvaɪt)
[ad. Russ. nifontovit (Malinko & Lisitsyn 1961, in Dokladȳ Akad. Nauk SSSR CXXXIX. 188), f. the name of P. V. Nifontov, 20th-cent. Russian geologist: see -ite1.]
A hydrated borate of calcium, CaB2O4.2·3H2O, found as colourless monoclinic crystals.
| 1961 Mineral. Mag. XXXII. 990 Nifontovite... Small anhedral grains in skarn deposits in the Urals. 1971 Soviet Physics—Crystallogr. XVI. 186/1 The description and investigation of a group of endogenic calcium metaborates: calciborite, korzhinskite, uralborite, nifontovite, frolovite, and pentahydroborite. |