Инд. авторы:	Simonov V.A., Ivanov K.S., Smirnov V.N., Kovyazin S.V.
Заглавие:	Physicochemical parameters of the melts participating in the formation of chromite ore hosted in the Klyuchevsky ultramafic massif, the Central Urals, Russia
Библ. ссылка:	Simonov V.A., Ivanov K.S., Smirnov V.N., Kovyazin S.V. Physicochemical parameters of the melts participating in the formation of chromite ore hosted in the Klyuchevsky ultramafic massif, the Central Urals, Russia // Geology of Ore Deposits. - 2009. - Vol.51. - Iss. 2. - P.109-122. - ISSN 1075-7015. - EISSN 1555-6476.
Внешние системы:	DOI: 10.1134/S1075701509020032; SCOPUS: 2-s2.0-65549157922;
Реферат:	eng: The results of melt inclusion study are reported for chromites of the Klyuchevsky ultramafic massif, which is the most representative of all Ural ultramafic massifs localized beyond the Main Ural Fault Zone. The massif is composed of a dunite-harzburgite complex (tectonized mantle peridotite) and a dunite-wehrlite-clinopyroxenite-gabbro complex (layered portion of the ophiolitic section). The studied Kozlovsky chromite deposit is located in the southeastern part of the Klyuchevsky massif and hosted in serpentinized dunite as a series of lenticular bodies and layers up to 7-8 m thick largely composed of disseminated and locally developed massive ore. Melt inclusions have been detected in chromites of both ore types. The heated and then quenched into glass melt inclusions and host minerals were analyzed on a Camebax-Micro microprobe. The glasses of melt inclusions contain up to 1.06 wt % Na2O + K2O and correspond to melts of normal alkalinity. In SiO2 content (49-56 wt %), they fit basalt and basaltic andesite. The melt inclusions are compared with those from chromites of the Nurali massif in the southern Urals and the Karashat massif in southern Tuva. The physicochemical parameters of magmatic systems related to the formation of disseminated and massive chromite ores of the Klyuchevsky massif are different. The former are characterized by a wider temperature interval (1185-1120°C) in comparison with massive chromite ore (1160-1140°C). © Pleiades Publishing, Ltd. 2009.
Ключевые слова:	Eurasia; ultramafic rock; physicochemical property; ore deposit; melt inclusion; chromite; Chromite deposits; Sodium; Silicon compounds; Minerals; Inclusions; Igneous rocks; Glass manufacture; Glass; Urals; Wehrlite; Ultramafic massifs; Temperature intervals; Physico-chemical parameters; Ore types; Micro probes; Melt inclusions; Magmatic systems; Glass melts; Fault zones; Dunite-harzburgite complexes; Chromite ores; Basaltic andesites; Chromite;
Издано:	2009
Физ. характеристика:	с.109-122