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Hydrothermal monazite, coprecipitated with skarn gold, was identified at Beiya. • In situ SIMS Th-Pb dating on monazite yielded a robust age of 36.0 ± 0.5 Ma. • The quartz monzonite porphyry accounts for the skarn gold mineralization. • Skarn gold deposition was
Of the aforementioned deposits, the Beiya porphyry-skarn (>450 t of Au at 2.4 g/t Au; 0.6 Mt. of Cu at 0.48 wt% Cu) is the largest Au deposit in the Tibetan-Sanjiang orogenic belt (He et al., 2015).The ore field covers ∼18 km 2 and comprises four ore segments named Wangdongshan, Hongnitang, Bijiashan and Jingouba segments (Fig. 2 a).
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The Beiya Au deposit in the Sanjiang metallogenic belt, SW China, is a porphyry-skarn deposit that formed in an intracontinental setting. Three stages of hydrothermal veins, namely quartz veins (Stage 1), quartz-pyrite veins (Stage 2), and Au-rich sulfide-quartz ...
The Beiya gold-polymetallic deposit, which is located in the middle of this belt, is the largest gold deposit in the region (reserve: N300 t gold), as well as significant amounts of Fe, Cu, Ag, Pb ...
The Geological Characteristics and Genesis of Beiya Gold-polymetallic Deposit, Yunnan Province, China Guangfu ZOU, Corresponding Author Guangfu ZOU Chengdu Institute …
Based on comprehensive petrological, geochronological, and geochemical studies, this study analyzed the relationships between the Beiya gold-polymetallic skarn deposit and …
Many granite porphyries of ~36 Ma were exposed in the Beiya deposit, including ... Geochemical and mineralogical contrasts between economic and uneconomic granite porphyries in the Beiya giant Au deposit, southwest China: Implications for petrogenesis and Cu–Au mineralization - Bao - 2023 - Geological Journal - Wiley Online Library
Semantic Scholar extracted view of "Geochemistry and geochronology of Beiya giant Au polymetallic deposit: Implications for multistage ore-fluid pulses in a skarn system" by Rui-Rui Zhang et al. DOI: 10.1016/j.oregeorev.2023.105818 Corpus ID: 266216060 ...
Based on comprehensive petrological, geochronological, and geochemical studies, this study analyzed the relationships between the Beiya gold‐polymetallic skarn deposit and quartz syenite porphyries, and discussed the source(s) and evolution of magmas. Our results suggest that syenite porphyries (i.e. the Wandongshan, the Dashadi, and the …
Paper Number: 2259 Geochronology of the giant Beiya gold–polymetallic deposit in Yunnan Province, Southwest China and its relationship with the petrogenesis of alkaline porphyry Fu, Y.1, Sun, X.M.1,2,3*, Lin, H.1 and Zhou H.Y.2 1 School of Marine Sciences, Sun Yat-sen University, Guangzhou 510006, China ...
on the Different Skarn Metallogenesis between the Giant Beiya Au and Machangqing Cu ... yields a lower-intercept age of 1829 ± 23 Ma on the Tera-Wasserburg plot and a ²⁰⁸Pb/²³²Th weighted ...
Many granite porphyries of ~36 Ma were exposed in the Beiya deposit, including the Wandongshan (WDS) and Hongnitang monzogranite porphyries (HNT–MPs) with …
The Beiya porphyry-skarn Au deposit is one of the largest gold deposits in China, temporally and spatially associated with Eocene intrusions in a post-collisional setting in western …
The results yielded a lower intercept 206 Pb/ 238 U age of 35.3 ± 1.8 Ma (MSWD = 0.68, n = 23). The calculated oxygen isotopic compositions of hydrothermal fluids in equilibrium with two types of garnets range from 6.46 ‰ to 8.56 ‰ (average 7.89 ‰), which are within the range of values for magmatic fluids.
Abstract The Beiya porphyry-skarn Au deposit is one of the largest gold deposits in China, ... (35.8 ± 0.6 Ma), while the biotite-monzonite porphyry (34.3 ± 0.5 Ma) represents a post-mineralization intrusion crosscutting the main orebodies and the quartz Both ...
The Beiya ore deposit is located in the northwestern Yangtze Block, to the southeast of the Tibetan Plateau, SW China. ... 1998), and (c) Nb/Zr vs. Th/Zr for lamprophyre dikes associated with the Beiya ore deposit. (c) is modified from Ma et al. (2014) (1986) ...
The Beiya gold–polymetallic deposit, located at the junction of the "Sanjiang" Tethys–Himalaya orogenic belt and the Yangtze craton in southwestern China, is the …
The giant Beiya Au skarn deposit (over 300 tonnes Au metal reserve) is located in the middle part of the Jinshajiang-Ailaoshan alkaline porphyry metallogenic belt. The deposit is the largest Au skarn deposit and third …
The Beiya polymetallic Au orefield, a representative example of these ore types, is located close to the Triassic Ailaoshan–Songma suture to the east and formed during …
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Revealing the mechanism of metal enrichment in upper crust is important for understanding the formation of giant porphyry Cusbnd Au system. Whereas, it remains unclear when and how this enrichment process operated in a collisional setting. In this study, abundant Neoproterozoic biotitite xenoliths, entrained by Eocene monzogranite porphyries, are …
Abstract. The Beiya gold polymetallic ore deposit is one of the largest gold deposit in the world. Previous studies have suggested the formation of the Beiya deposit is closely …
1. Introduction The giant Beiya gold–polymetallic deposit lies in the middle of the Jinshajiang-Ailaoshan alkaline porphyry metallogenic belt and is the largest skarn gold deposit in China with estimated reserves of 130.8 million tonnes (Mt) of Au (average grade: 2.47 g/t), 170 Mt of Fe (average grade: 33.3 wt%), 125 Mt of Cu (average grade: 0.52 …
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Beiya gold-polymetallic ore district found in northeastern Yunnan province in the last few years,located in the middle- southern section of the eastern Xizang-Jinsha River - Ailao Mountain alkali-rich porphyry metallogenetic belt,is one of the typical gold-polymetallic metallogenesis system related to alkali-rich intrusion during the Himalayan epoch.Based …
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It was proposed that the Beiya porphyries are related to magmas derived from juvenile lower crust which is enriched in metals and formed at ca. 840 Ma (Deng et al., 2015; He et al., 2017). These evolved magmas are expected to be enriched in volatiles, sulfur, and sulfide-compatible elements such as Cu and Au and thus move upward (Richards, 2003 ).
Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) U-Pb zircon dating of Beiya quartz syenite porphyry yielded an age of 36.5 ± 0.3 Ma, which was consistent with the Re-Os ...
Field investigation, petrography, microthermometry and composition analysis of the fluid inclusion and H-O-S isotopes were implemented in this study with aims to identify a new …
Semantic Scholar extracted view of "Geology and genesis of the giant Beiya porphyry–skarn gold deposit, northwestern Yangtze Block, China" by Jun Deng et al. DOI: 10.1016/J.OREGEOREV.2015.02.015 Corpus ID: 128688347 Geology and genesis of …
Skarn is the main mineralization type in the Beiya deposit (Fig. 3, Fig. 4).KT52 occurring around the Wandongshan porphyry is the largest skarn ore body (Fig. 3) in the ore field and its proven reserves are 87.2 Mt of gold ore with a mean grade of 2.35 g/t, along with 90.27 Mt of iron ore with an average grade of 34% Fe, 111.8 Mt of copper ore with an average …
The large volume of massive magnetite in Beiya ores are of hydrothermal origins from skarn deposit and distinct from the magmatic accessory magnetite in the ore-related porphyry …
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Our LA-ICP-MS zircon U-Pb age of 36.2 ± 0.4 Ma (Fig. 7b, c) for the quartz syenite porphyry dikes at Luping lies within the age range of alkaline porphyries at Beiya (ca. 38 Ma-31 Ma) He et al ...
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