Sources of the fluids for metasomatic magnesite of Ismakaevo deposit in the South Ural province (thermokryometry of fluid inclusions)
| Autor: | M. T. Krupenin, A. A. Garaeva |
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| Jazyk: | English<br />Russian |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Литосфера, Vol 0, Iss 2, Pp 133-139 (2015) |
| Druh dokumentu: | article |
| ISSN: | 1681-9004 2500-302X |
| Popis: | Bittern brine nature of fluid inclusions in magnesite of Ismakaevo deposits are confirmed not only by data of Cl-Br ion systematics, but also by methods of microthermometry. The mean value of salinity of inclusions in magnesite is 23.6 wt % NaCl eqiv. (variations 20.7-25.8). In the salt composition of the inclusions, according to the eutectic temperature at microkryometry study (-50.8...-56.2°C), dominate magnesium, sodium and calcium chlorides. Homogenization temperature of two-phase inclusions occurs within the interval 184-279°C (average 224°C). High salinity fluid inclusions (24.1-24.9 wt % NaCl eqiv.) and stable temperature homogenization (216-245°C) are observed also in metasomatic fine-grained (icy) quartz, syngenetic with magnesite. Giant-grained milky-white later quartz has a lower salinity (11.5-17.1 wt %) and homogenization temperature (169-245°C). |
| Databáze: | Directory of Open Access Journals |
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