Conditions of formation of gold-bearing magnetite-chlorite-carbonate rocks of the Karabash ultrabasic massif (South Urals)статья

Информация о цитировании статьи получена из Scopus, Web of Science
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2018 г.

Работа с статьей


[1] Murzin V. V., Varlamov D. A., Palyanova G. A. Conditions of formation of gold-bearing magnetite-chlorite-carbonate rocks of the karabash ultrabasic massif (south urals) // Russian Geology and Geophysics. — 2017. — Vol. 58, no. 7. — P. 803–814. Ilmenite, apatite, monazite, aeshynite-(Y), zircon, baddeleyite, thorianite, uraninite, and copper-containing native gold have been revealed in specific magnetite–chlorite–carbonate rocks and chloritolites in the Karabash ultrabasic massif in the South Urals. Dolomite from the magnetite–chlorite–carbonate rocks are characterized by a rather uniform isotope composition (δ13С = –0.9 to –1.9‰, δ18О = 11.5–13.6‰, 87Sr/86Sr = 0.70422–0.70469) corresponding to a mixture of sources: marine limestones and mantle fluids. We determined the isotope compositions of antigorite from serpentinites (δD = –79.1 and –89.6‰, δ18O = 7.4 and 7.6‰), of chlorite from chloritolites (δD = –57.8‰, δ18O = 7.8‰), and of magnetite–chlorite–carbonate rocks (δD = –59.2 and –69.6‰, δ18O = 6.4 and 5.9‰). The latter probably formed by the mechanism of filling of the free space at 480–280 ºC, and chloritolites were developed after serpentinites. Oceanic serpentinites, gabbros, limestones, and mantle fluids can be considered the source of material during the formation of magnetite–chlorite–сarbonate rocks. A comparative analysis of the latter and the massif rodingites (chlograpites) bearing copper-containing gold was carried out. The established common features of these types of rocks are the localization in zones of tectonic melange, the presence of chloritolite rims, geochemical specialization, thermal conditions of formation, and isotope parameters of minerals and fluids. [ DOI ]

Публикация в формате сохранить в файл сохранить в файл сохранить в файл сохранить в файл сохранить в файл сохранить в файл скрыть