Sources of Matter and Ore-Producing Fluid of the Tamunyer Gold–Sulfide Deposit (Northern Urals): Isotope Results
| Autor: | V. V. Murzin, D. A. Zamyatina |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
geography Mineralization (geology) geography.geographical_feature_category 010504 meteorology & atmospheric sciences Sulfide Andesite Geochemistry 010502 geochemistry & geophysics 01 natural sciences Mantle (geology) Volcanic rock Ore genesis δ34S chemistry Earth and Planetary Sciences (miscellaneous) General Earth and Planetary Sciences Quartz Geology 0105 earth and related environmental sciences |
| Zdroj: | Doklady Earth Sciences. 478:211-213 |
| ISSN: | 1531-8354 1028-334X |
| Popis: | The Tamunyer deposit is a typical example of gold–sulfide mineralization located in the lower lithologic–stratigraphic unit (S2–D1) of the Auerbach volcanic–plutonic belt. The latter comprises island–arc andesitic volcano–sediments, volcanics, and comagmatic intrusive formations. Carbonates have demonstrated intermediate values of δ13C between marine limestone and mantle. The quartz δ18O is in the range of 15.3–17.2‰. The δ34S of sulfides from the beresitized volcano-sedimentary rocks and ores varies widely from –7.5 to 12‰. The calculated isotope compositions of H2O, CO2, and H2S of the ore-bearing fluid imply two major sources of matter contributing to ore genesis: local rocks and foreign fluid. The ore-bearing fluid was formed by interaction and isotope equilibration between a deep magmatic fluid and marine carbonates (W/R ~ 1), with the contribution of sulfur from the volcano-sedimentary rocks. |
| Databáze: | OpenAIRE |
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