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The Beiya giant porphyry Au deposit is the largest Cenozoic Au deposit in the Jinshajiang Cu–Mo–Au metallogenic belt. Many granite porphyries of ~36 Ma were exposed in the Beiya deposit, including the Wandongshan (WDS) and Hongnitang monzogranite porphyries (HNT–MPs) with economically important Au metal resources, the uneconomic WDS …
The Beiya gold polymetallic deposit is believed to be a typical porphyry-skarn deposit formed closely related to the Ailaoshan-Red River shear …
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carbonate sequences of the Middle Triassic Beiya Formation (He et al., 2013). This study highlights the mineral paragenesis from the Beiya deposit. More than 40 minerals from …
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 …
The Beiya Au-base metal deposit in southwest China is characterised by a huge amount of iron associated with gold mineralization. The formation of the Beiya deposit is generally …
The Beiya deposit is situated to the north of Dali in western Yunnan, China. Geologically, Beiya is located in the southern Sanjiang Tethys tectonic domain and to the east of the Jinshajiang suture (Fig. 1).Sanjiang Tethys is named after the three major rivers (Chi: Jiang) in the region, i.e., Jinshajiang, Lancangjiang, and Nujiang.
The Beiya skarn gold deposit is located in the eastern Tethyan orogenic belt in western Yunnan province, China. It is one of the largest gold deposits in China, with significant amounts of silver and base metals. To the end of 2014, the estimated resources are 125 million tonnes (Mt) of ore, grading 2.42 g/t Au, 0.48 wt % Cu, 25.5 wt % Fe, 38. ...
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 related to the porphyritic alkaline intrusions. Different tectonic models have been proposed by geologists to explain the alkaline intrusions. However, no consensus has been reached and data for …
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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 …
The Beiya gold polymetallic deposit is believed to be a typical porphyry‐skarn deposit formed closely related to the Ailaoshan‐Red River shear zone in an extensional tectonic setting.
The Beiya ore system, however, is different in that it is genetically associated with alkaline intrusions within an intraplate setting, although it too typically shows zoning of ore …
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 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 largest Au deposit in China. In this paper, we present garnet U-Pb ages and trace element geochemical data from two types of skarn-related U …
The Beiya gold deposit (323t of gold @ 2.47 g/t) is located in the centre of the Jinshajiang-Ailaoshan potassium alkaline porphyry Cu-Au metallogenic belt in SW China, which is the largest skarn gold deposit in China. As the dominant ore mineral at Beiya, magnetite ...
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 …
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 …
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1. Introduction Recent exploration conducted by Yunnan Gold & Mineral Group Co., Ltd in the Beiya orefield in western Yunnan province, southwest China, indicates that has proven reserves of more than 370 tonnes (t) Au at an average grade of 2.52 g/t Au, approx. 200 million t Fe at an average grade of 33.92% TFe (total iron), 0.8 million t Cu at an average …
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The Beiya deposit is situated to the north of Dali in western Yunnan, China. Geologically, Beiya is located in the southern Sanjiang Tethys tectonic domain and to the east of the Jinshajiang suture (Fig. 1).Sanjiang Tethys is named after the three major rivers (Chi: Jiang) in the region, i.e., Jinshajiang, Lancangjiang, and Nujiang.Sanjiang Tethys was formed …
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DOI: 10.1016/J.OREGEOREV.2015.03.004 Corpus ID: 128986517 Geochemistry and geochronology of porphyries from the Beiya gold–polymetallic orefield, western Yunnan, China A set of Tertiary alkali-rich porphyries occurs in …
Garnets from the Beiya gold-polymetallic skarn deposit have U-Pb ages of 36.4 ± 1.8, 34.8 ± 0.7 and 33.4 ± 1.0 Ma. • They record the fluid evolution history of the deposit from oxidized and acidic to oxidized and nearly-neutral conditions. • In the proximal skarn, the ...
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 wt%), along with …
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 …
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