Gold deposits related to alkaline magmatism

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WebOct 13, 2013 · Jensen, E. P. & Barton, M. D. Gold deposits related to alkaline magmatism. Rev. Econ. Geol. 13, 279–314 (2000). Google Scholar Download references. Acknowledgements. I acknowledge the support of ... WebDec 19, 2024 · Tellurium (Te) is a very rare element that averages only 3 parts per billion in Earth’s upper crust. It shows a close association with gold and may be present in orebodies of most gold deposit types at levels of tens to hundreds of parts per million.

Evidence of gold related to Neoarchean alkaline …

WebAug 5, 2024 · Post-subduction magmatism in the Gangdese belt ranges from ultrapotassic rocks 10, through shoshonites 35 and medium K-calc-alkaline 14 to high-K-calc-alkaline 14, and the ore forming high Sr/Y ... WebThe belt is characterized nesis evolution of ore-bearing intrusions (e.g., Richards et al., 2012; by broadly calc-alkaline magmatism generated in response to con- Shaﬁei et al., 2009; Wang et al., 2014), (2) the composition of tinuous stages of the Neo-Tethys closure during Paleogene and a exsolving hydrothermal ﬂuids and subsequent ﬂuid ... shooting in elmhurst queens

The Archean magmatic-hydrothermal system of Lac Shortt (Au …

WebThis paper is a summary of late Cenozoic magmatism and epithermal gold-silver deposits in the northern Great Basin (north of latitude 37°30'N). The focus is on variations in the composition, tectonic setting, and eruptive style of the ... Subduction-related calc-alkaline magmatism was wide-spread in the northern Great Basin and most intense in ... WebMay 1, 2024 · These features are described here, and compared with descriptions of Phanerozoic porphyry and epithermal gold deposits related to alkaline magmatism (Table 1), and the implications for ore genesis are discussed. WebMar 1, 2016 · Song et al. (2015) provide a new description of the Jinchangyu gold deposit close to the northeastern margin of the NCC. In the paper the authors show that the deposit is related to alkaline magmatism in a structural corridor. The paper describes the alteration geology, fluid inclusion geochemistry, and isotope ratio studies. shooting in ensley al today

Petrology and geochemistry of alkalic intrusives at the Porgera …

Tellurium U.S. Geological Survey

http://www.sciepub.com/reference/259830 WebMar 3, 2024 · A new classification is proposed that includes (1) OGS and OGS-like deposits dominated by metamorphic and magmatic fluids, respectively; (2) porphyry and IRGS that may contain gold remobilized during subsequent deformation episodes; (3) porphyry and IRGS that are overprinted by OGS. shooting in emory txWebNew Mexico Bureau of Geology & Mineral Resources. About Us. Mission. Boards & commissions; Geo-education; Laboratories; Libraries; Mapping shooting in ensley

"WebJan 1, 2024 · This relatively alkalic magmatism related to Farallon plate subduction below the North American continent, for example, can be most directly related to alkalic magmatic-hydrothermal... " - Gold deposits related to alkaline magmatism

Gold deposits related to alkaline magmatism

Gold endowments of porphyry deposits controlled by

WebDec 14, 2024 · PDF Overview of the geology, geochemistry, and origin of, and exploration for epithermal alkaline gold deposits Find, read and cite all the research you need on ResearchGate WebFeb 1, 2002 · Sillitoe (1997) points out that about 20% of the large Au deposits are associated with shoshonitic and alkaline rocks, which are unlikely to exceed 3% by volume of circum-Pacific igneous rocks....

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WebJan 1, 2015 · Recent studies suggest that the formation of the Carlin gold district of Nevada is also related to high potassic magmatism, although the association may be less direct than for the other deposit types. ... Cripple Creek and other alkaline-related gold deposits in the southern Rocky Mountains, USA: influence of regional tectonics. Miner Deposita ... WebJun 1, 2014 · Although these deposits are generally related to alkaline magmatism, our study documents an unusual occurrence of Te-rich low-sulfidation epithermal systems in the North Heilongjiang Belt in northeast China that is spatially and temporally associated with calc-alkaline magmatism and tectonic extension in a continental arc‐setting.

WebJan 14, 2024 · Porphyry deposits are natural suppliers of most copper and significant gold to our society. Whereas the Cu-richest (Au-poor) porphyries are related to Andean-type subduction and typical calc-alkaline magmatism, the Au-richest porphyries are associated with high-K calc-alkaline to alkaline magmatism in late to post-subduction or post … WebNov 1, 2024 · The Cu ± Au endowment of the Cretaceous is consistent with typical subduction-related arc environments and generation of calc-alkaline porphyry to high-sulfidation epithermal systems, whereas Au enrichment related to Cenozoic magmatism appears to be related to high-K calc-alkalic to shoshonitic compositions.

WebAlkaline magmatism, major structures, and gold deposits; implications for greenstone belt gold metallogeny Derek Wyman; Derek Wyman Univ. Sask., Dep. Geol. Sci., Saskatoon, SK, Canada. Search for other works by this author on: GSW. ... Related Book Content. Chapter 3: Gold Deposits of the World-Class Timmins-Porcupine Camp, Abitibi … WebApr 10, 2024 · The geochemical data identify I-type calc-alkaline magmatism with typical continental-arc features. ... to granitic rocks and related dikes indicate that the melt evolution continued from the ...

WebFeb 10, 2024 · The Jinchang gold–copper deposit is located in Eastern Heilongjiang Province, Northeastern China. The orebody comprises primarily hydrothermal breccias, quartz veins, and disseminated ores within granite, diorite, and granodiorite. Three paragenetic stages are identified: early quartz–pyrite–arsenopyrite (Stage 1), …

WebOct 13, 2013 · Jensen, E. P. & Barton, M. D. Gold deposits related to alkaline magmatism. Rev. Econ. Geol. 13, 279–314 (2000). Google Scholar Download references. Acknowledgements. I acknowledge the … shooting in enfield ncWebGold Deposits Tectonic Deformation Alkaline Magmatism Metasedimentary Rocks South Central Vein Formation Northern Alaska Gold Bearing AbstractMesothermal, gold-bearing quartz veins are widespread within allochthonous terranes of Alaska that are composed dominantly of greenschist-facies metasedimentary rocks. shooting in englewood coloradoWebNov 10, 2014 · Trace element and isotopic data from the Lac Shortt (Abitibi, Canada) gold and rare earth element (REE) deposit sheds light on the cogenetic association between alkali magmatism (syenites and lamprophyres), carbonatation (magmatic and carbothermal) and gold – REE mineralization. shooting in ensley todayWebThis type of gold deposit is mostly found in sedimentary and magmatic rock. The temperature of the hydrothermal fluids in magmatic rock are between 200 and 300 degrees Celsius (“epithermal”). Here the gold … shooting in englewood co todayWebOct 18, 2024 · A case of Te-rich low-sulfidation epithermal Au-Ag deposits in a calc-alkaline magmatic arc, NE China. Tellurium-bearing low-sulfidation epithermal Au-Ag deposits are significant producers of gold, silver, and potentially strategic elements if mineral processing methods are optimized for recovery. shooting in enterprise alWebNov 9, 2024 · This relatively alkalic magmatism related to Farallon plate subduction below the North American continent, for example, can be most directly related to alkalic magmatic-hydrothermal deposits such as … shooting in englishWebNov 30, 2024 · Permian magmatism occurred widely in the Tarim basin and adjacent areas of NW China, resulting in the emplacement of numerous carbonatite plutons and alkaline rock intrusions, which are likely to have been derived from mantle sources. In addition, at least one large igneous province (LIP) can be recognized in NW China; namely, the ca. … shooting in enterprise alabama last night