Fluid regime of gold-bearing rodingites formation: fluid inclusions data
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| RMS-DPI code: |
2008-1-90-0 |
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| Scientific session: |
Fluid regime of hydrothermal ore-forming systems |
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| Author listing: |
Murzin V.V., Shanina S.N., Klyukin Yu.I. |
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| Principal author: |
Murzin Valeri Vasilievich |
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| Language: |
Russian |
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Abstract - Summary
(short description): | |
| We studied gas–liquid inclusions in minerals of gold-bearing rodingite (diopside, garnet, chlorite, and calcite) from the Karabash alpine-type ultrabasic massif, Southern Ural. Thermometric and cryometric studies and gas chromatography showed that the rodingites were formed at T= 420–470°C (homogenization temperatures range of 115–325°C), P= 1-3 kbar and XCO2 = 0.001–0.02, i.e., under conditions typical for rodingites formation. The rodingite-forming fluid was extremely rich in water (XH2O = 0.935–0.983) and contained hydrogen as the major gas component (XH2 = 0.012–0.048); its composition was essentially chloride–magnesium with minor amounts of CaCl2 and FeCl2 and a low salinity of 0.5–8.3 wt % NaCl equiv. It was found that the rodingites were formed under reducing conditions (CO2/(CO2+CO+H2+CH4 <0.35). |
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| Date of presentation: |
22/09/2008 |
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| Presentation Place: |
IGEM RAS, Conference Hall |
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| RMS-DPI code: |
2008-1-90-0 |
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Proceeedings volume
in the RMS catalogue: | Proceedings of XIII International conference on thermobarogeochemistry and IVth APIFIS symposium. Volume 2. |
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| Pages: |
76-79 |
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File of proceedings
(PDF): |
135 K
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| Status: |
printed |
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| Recieved: |
28/03/2008 |
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| Accepted: |
27/06/2008 |
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| Published on-line: |
30/03/2009 |
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| Permanent address of publication: |
http://www.minsoc.ru/2008-1-90-0/ |
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| Contact author(s): |
Murzin, Valeri Vasilievich |
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