FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4311462078> ?p ?o ?g. }

• W4311462078 endingPage "105231" @default.
• W4311462078 startingPage "105231" @default.
• W4311462078 abstract "Carbonaceous material (CM) is widely distributed at the Bangbu orogenic gold deposit in vein-hosted and disseminated ores, as well as wall rocks. Despite being closely ore-related, the CM nature and genesis, as well as its possible role in gold metallogeny, remain unclear. Hence, we investigate the role of five ore-related CM types (CM1-4 and methane, which coexist with three pyrite generations of Py1-Py3) by integrating petrographic observation, Raman spectroscopy, LA-ICP-MS, fluid inclusion microthermometry, and thermodynamic modeling. CM1 only occurs in disseminated ores and is overprinted by large euhedral Py1 with median 5.28 ppm Au. Raman spectroscopy analysis shows that CM1 has undergone high-temperature regional metamorphism (∼510 °C). Geochemical modeling shows that Au precipitation in Py1 can be attributed to the fluid-rock interactions of CM1 and Au-bearing ore fluids, which future leads to the host rock alteration and CM1 consumption. CM2 occurs with large subhedral Py2 and hydrothermal sericite in quartz veins, and gold exists as native gold and as Au+ in pyrite. Py2 consists of Py2a with median 0.44 ppm Au and Py2b with median 49.80 ppm Au. Raman spectroscopy of CM2 experienced a temperature of ∼455 °C, much higher than the main ore stage fluid inclusion homogenization temperature (167–247 °C). Meanwhile, methane is commonly found in CO2-bearing fluid inclusions in the quartz closely associated with Py2 and CM2. Geochemical modeling shows that methane can be a more efficient reductant than CM2 and is capable of reducing Au-bisulfide to native gold. CM3 intergrows with fine Au-poor subhedral Py3 (median 1.00 ppm Au) in randomly-oriented “black sinuous” veins within vein-type ores. The CM3 formation temperature is calculated as ∼290 °C. During the sulfidation processes, H2S and CO2 from the ore fluids may have reacted with Fe-bearing minerals, precipitating CM3 and Py3. The loss of aqueous H2S would destabilize Au-bisulfide complexes, which is the secondary gold precipitation mechanism proposed for this deposit. CM4 occurs in the wall rocks and have similar structural features with structure-bound semi-graphite observed by petrology, indicating that the formation process is different from that of other CM types. This is supported by the Raman geothermometric results of CM4 (formation temperature ∼388 °C). Additionally, no spatial association was observed between CM4, auriferous sulfides, and native gold. In conclusion, our study proposed the most likely roles of CM in gold precipitation in this deposit, which bears important implications for better understanding of the processes that lead to the formation of high-grade ores." @default.
• W4311462078 created "2022-12-26" @default.
• W4311462078 creator A5016082098 @default.
• W4311462078 creator A5025582376 @default.
• W4311462078 creator A5031128531 @default.
• W4311462078 creator A5038000202 @default.
• W4311462078 creator A5046435773 @default.
• W4311462078 creator A5048224258 @default.
• W4311462078 creator A5052692775 @default.
• W4311462078 creator A5059553859 @default.
• W4311462078 creator A5086704782 @default.
• W4311462078 date "2023-01-01" @default.
• W4311462078 modified "2023-10-13" @default.
• W4311462078 title "Role of carbonaceous material in gold precipitation for orogenic gold deposits: A case study of the Bangbu gold deposit in southern Tibet, China" @default.
• W4311462078 cites W11107958 @default.
• W4311462078 cites W1176290915 @default.
• W4311462078 cites W141969543 @default.
• W4311462078 cites W1551215360 @default.
• W4311462078 cites W1727598645 @default.
• W4311462078 cites W1751465852 @default.
• W4311462078 cites W1797283169 @default.
• W4311462078 cites W1844654844 @default.
• W4311462078 cites W1960465926 @default.
• W4311462078 cites W1964625372 @default.
• W4311462078 cites W1965744338 @default.
• W4311462078 cites W1969446877 @default.
• W4311462078 cites W1969725957 @default.
• W4311462078 cites W1974154460 @default.
• W4311462078 cites W1982952195 @default.
• W4311462078 cites W1988833071 @default.
• W4311462078 cites W1992185651 @default.
• W4311462078 cites W1993304547 @default.
• W4311462078 cites W2001393367 @default.
• W4311462078 cites W2005925547 @default.
• W4311462078 cites W2017182649 @default.
• W4311462078 cites W2018093298 @default.
• W4311462078 cites W2025674268 @default.
• W4311462078 cites W2035877353 @default.
• W4311462078 cites W2036183472 @default.
• W4311462078 cites W2036419966 @default.
• W4311462078 cites W2044342397 @default.
• W4311462078 cites W2045856462 @default.
• W4311462078 cites W2046223350 @default.
• W4311462078 cites W2049913504 @default.
• W4311462078 cites W2050487135 @default.
• W4311462078 cites W2052991661 @default.
• W4311462078 cites W2053749207 @default.
• W4311462078 cites W2053874351 @default.
• W4311462078 cites W2053944321 @default.
• W4311462078 cites W2053986704 @default.
• W4311462078 cites W2059058479 @default.
• W4311462078 cites W2064858408 @default.
• W4311462078 cites W2069123191 @default.
• W4311462078 cites W2069207572 @default.
• W4311462078 cites W2077266669 @default.
• W4311462078 cites W2082613013 @default.
• W4311462078 cites W2086986957 @default.
• W4311462078 cites W2087778168 @default.
• W4311462078 cites W2091743083 @default.
• W4311462078 cites W2091789773 @default.
• W4311462078 cites W2093068924 @default.
• W4311462078 cites W2097804664 @default.
• W4311462078 cites W2099678707 @default.
• W4311462078 cites W2107248935 @default.
• W4311462078 cites W2110609253 @default.
• W4311462078 cites W2111375088 @default.
• W4311462078 cites W2115518283 @default.
• W4311462078 cites W2116131231 @default.
• W4311462078 cites W2123826066 @default.
• W4311462078 cites W2126092097 @default.
• W4311462078 cites W2129772095 @default.
• W4311462078 cites W2130337482 @default.
• W4311462078 cites W2133042542 @default.
• W4311462078 cites W2150169228 @default.
• W4311462078 cites W2153952174 @default.
• W4311462078 cites W2154454846 @default.
• W4311462078 cites W2163520432 @default.
• W4311462078 cites W2187967180 @default.
• W4311462078 cites W2227505540 @default.
• W4311462078 cites W2279469126 @default.
• W4311462078 cites W2291509715 @default.
• W4311462078 cites W2295746308 @default.
• W4311462078 cites W2312664269 @default.
• W4311462078 cites W2314503413 @default.
• W4311462078 cites W2338474358 @default.
• W4311462078 cites W2344382649 @default.
• W4311462078 cites W2344739419 @default.
• W4311462078 cites W2396499624 @default.
• W4311462078 cites W2510265784 @default.
• W4311462078 cites W2512533986 @default.
• W4311462078 cites W2551400655 @default.
• W4311462078 cites W2560967915 @default.
• W4311462078 cites W2731024322 @default.
• W4311462078 cites W2731612812 @default.
• W4311462078 cites W2739412796 @default.
• W4311462078 cites W2763497750 @default.
• W4311462078 cites W2767399395 @default.
• W4311462078 cites W2771883053 @default.

• next