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Evaluating the Geochemical Characteristics, Fluid Evolution and Ore Genesis of Gold and Associated Mineralization at Legyin Gold Deposit, Southern Bamauk, Sagaing Region, Myanmar
https://meral.edu.mm/records/9418
https://meral.edu.mm/records/94180e40ed44-2041-4ca3-9d39-eb2633e4b3bd
9174c076-b97a-4a31-af9e-2ee34264ca41
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4-DrMayThweAye.pdf (1 MB)
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Journal article | ||||||
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Publication | ||||||
Title | ||||||
Title | Evaluating the Geochemical Characteristics, Fluid Evolution and Ore Genesis of Gold and Associated Mineralization at Legyin Gold Deposit, Southern Bamauk, Sagaing Region, Myanmar | |||||
Language | en | |||||
Authors | ||||||
May Thwe Aye | ||||||
Day Wa Aung | ||||||
Wai Yan Lei Aung | ||||||
Kyi Nwe Nwe Aung | ||||||
Description | ||||||
Abstract Several primary gold deposits are found in Sagaing Region, northern Myanmar. Legyin gold deposit is located in Kawlin-Wuntho Block of the Central Magmatic Volcanic Belt (CMVB). The exposed rock units are andesite (Mawgyi Andesite) of Cretaceous age, mudstone and phyllite (Shwedaung Formation, Upper Triassic), sandstone (Wabochaung Formation) of Miocene age and granodiorite of Mesozoic and Paleogene age. The gold mineralization is mainly hosted by Mawgyi andesite. The aim of this study is to evaluate the geochemical characterisitcs, fluid evolution, ore genesis of gold and associated mineralization at Legyin gold deposit. Based on the mineral assemblages and cross-cutting relationship, two types of veins are recognized. Sericite, epidote, calcite and chlorite are the main alteration minerals. Atomic Absorption Spectrum (AAS) results show the potential of gold range from 0.1 to 2.6ppm. Three types of fluids inclusions were identified. The measured fluid inclusions are 185◦C and 28 bars, 170 ◦C and 26 bars, and 150 ◦C and 20 bars with correspondence to the depth of 300 m, 280 m, and 210 m, respectively. Based on the geological investigation, ore mineralogy, the alteration mineral assemblages, the nature of mineralization and the ore forming fluids, the gold and associated mineralization from the Legyin gold deposit can be recommended as epithermal type deposit. Keywords: Epithermal deposit, Mawgyi andesite, fluid inclusion, Legyin |
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Keywords | ||||||
Epithermal deposit, Mawgyi andesite, fluid inclusion, Legyin prospect, Sagaing Region | ||||||
Journal articles | ||||||
2023 | ||||||
Journal of the Asia Research Centre, University of Yangon | ||||||
39-46 | ||||||
Vol.9, No.1 & 2, 2023 |