Инд. авторы:	Ripp G.S., Izbrodin I.A., Doroshkevich A.G., Rampilov M.O., Lastochkin E.I., Posokhov V.F.
Заглавие:	Carbonates and sources of fluids in ores and metasomatites of the Ermakovka fluorite-bertrandite-phenacite deposit (western Transbaikalia)
Библ. ссылка:	Ripp G.S., Izbrodin I.A., Doroshkevich A.G., Rampilov M.O., Lastochkin E.I., Posokhov V.F. Carbonates and sources of fluids in ores and metasomatites of the Ermakovka fluorite-bertrandite-phenacite deposit (western Transbaikalia) // Russian Geology and Geophysics. - 2016. - Vol.57. - Iss. 9. - P.1288-1297. - ISSN 1068-7971. - EISSN 1878-030X.
Внешние системы:	DOI: 10.1016/j.rgg.2016.08.014; SCOPUS: 2-s2.0-84990190581;
Реферат:	eng: We present results of isotope-geochemical study of the Ermakovka F-Be deposit, including data on the oxygen and carbon isotope compositions in dolomite and calcite marbles and in carbonates accompanying skarns, of early and late stages of ore formation and of post-ore parageneses. To elucidate the sources of fluids participated in the ore formation, we calculated the oxygen isotope composition in water and the hydrogen isotope composition in hydroxyl-containing minerals. Phlogopite in marbleized dolomites, vesuvianite and amphibole in skarns, eudidimite and bertrandite in ore parageneses, and bavenite formed during post-ore processes are analyzed. Most of the ore-stage minerals are depleted in heavy oxygen. Their 518O values are lower than 5-6%c (SMOW). Oxygen in carbonate minerals of the initial stage (dolomite and bastnaesite) is heavier (1.3-4.9%c) than that in calcite (+ 2 to -3.7%c). The 518O values of water in equilibrium both with carbonate and with silicate minerals (-4 to -14%c) suggest the contribution of meteoric water to the mineral formation. A magmatic fluid (518O from + 6 to + 9%c) participated in the skarn formation at the initial stage, and a meteoric fluid, at the final stage (518O from -1 to -9%c). A meteoric source is confirmed by the depleted hydrogen isotope composition in minerals (5D from -119 to -192%c). © 2016
Ключевые слова:	western Transbaikalia; skarns; oxygen and hydrogen isotope compositions; F-Be ores;
Издано:	2016
Физ. характеристика:	с.1288-1297