2024 Gold deposits related to alkaline magmatism

Gold deposits related to alkaline magmatism

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WebMar 16, 2024 · The Spokoininsky ore cluster is a new promising ore target of the Aldan-Stanovoy gold province (ASGP), identified during prospecting in 2024 [].The search for ore targets has been undertaken since the 1970s [] but resulted in only scattered mineralization points with an unclear structural position and mineralogy of ores.The territory of the … 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.

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WebJul 15, 2024 · Alkaline-related epithermal to porphyry gold is one of the most important types of auriferous mineralization types. Some of the … 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. crossbowmagazine.com

(PDF) Late-Hercynian intrusion-related gold deposits: An …

WebNov 1, 2012 · The margin of NE China, a part of the West Pacific metallogenic belt, contains innumerable low-sulphidation mineral deposits. Gold deposits in this region can be classified into three distinct types based on geology and ore mineral paragenesis: (1) low-sulphidation epithermal silver–gold deposits, (2) low-sulphidation tellurium–gold … WebJan 1, 1990 · The mafic, alkaline nature and high f O 2 of the magmas, combined with evidence for extensive fractionation and the evolution of a volatile phase, support theories of a relationship between magmatism and the introduction of gold at Porgera. Parts of the deposit show similarities to other gold occurrences associated with alkaline … WebOct 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. cross-zip

Petrology and geochemistry of alkalic intrusives at the Porgera …

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 … 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... crossbolt tipsWebJan 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 … cross disciplinary vs interdisciplinary

"WebMar 1, 2016 · This large-scale (125.6 million metric tonnes with a mean grade of 2.42 g/t) Au-rich polymetallic deposit is related to alkaline porphyry intrusions. " - Gold deposits related to alkaline magmatism

Gold deposits related to alkaline magmatism

Giant ore deposits formed by optimal alignments and ... - Nature

WebNov 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 … 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 ...

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WebExamples of alkaline- related gold (copper) deposits with a clear relationship to arc magmatism include Ladolam and Porgera in Papua New Guinea, and the Emperor deposit in Fiji (Fig. 2). WebNov 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.

WebFeb 1, 2024 · —The Central Aldan ore district (CAOD) is unique by the abundance of gold deposits associated with Mesozoic alkaline magmatism. Four types of gold deposits are established here: porphyry gold, gold–sulfide, gold–argillizite-K-feldspar–quartz, and … WebGold 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.

WebFeb 23, 2024 · Controversy surrounds the genetic relationship between gold mineralization and magmatism, especially in deposits in granite. Jiaodong Peninsula is the leading gold province in China, and most deposits are in Mesozoic granites; moreover, debate on the genesis persists. In eastern Jiaodong, the Muping–Rushan gold belt produces mainly …

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.

WebJun 1, 2024 · The magmatic contribution in alkaline-related gold deposits is supported by the uncommon abundance of magmatic-derived and semi-volatile elements, such as Bi-Te-Tl, in the Bachelor/O’Brien and Beattie gold deposits. Gold, Te and Tl are typically enriched in arsenian pyrites, locally reaching economic concentrations (Keith et al., 2024). crossbow for sale nova scotiaWebOct 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 ... crosse de saint nicolas maternelleWebThe Jiaodong Peninsula is the most important gold mineralization area in China, and the formation of gold deposits is closely related to granitoids. The isotopic ages of the Early Cretaceous granodiorites in the northwestern Jiaodong Peninsula are concentrated in the range of 111~123 Ma, and are coeval with the formation of the gold deposits in the … crossbar baltimore menuWebThis 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 ... crossbag tascheWebAlkaline 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 … crossbite classificationWebEP Jensen MD Barton (2000) Gold deposits related to alkaline magmatism Rev Econ Geol 13 279–314 Google Scholar ML Jensen (1967) Sulfur isotopes and mineral genesis HL Barnes (Eds) Geochemistry of hydrothermal ore deposits Holt, Reinhart and Winston New York 143–165 Google Scholar crossbarn sonoma coast pinot noir 2019WebNov 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. crosscheck fertilizer