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2002•Journal of Precious Metallic GeologyRequires access

GEOLOGY AND GENESIS OF THE YAO'AN GOLD DEPOSIT RELATED TO ALKALI-RICH MAGMATIC ROCK IN YUNNAN PROVINCE

Liangsheng Ge

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Abstract

Yao'an gold deposit,located in Northwest Yunnan Province,is a typical deposit related to the Himalayan epoch alkali-rich intrusive rocks.The ore-forming process could be div ided into three epoches and five stages.There are several obvious alteration zones in the ore district.The occurrence of o re-bodies or ore-veins are closely r elated to the alkali-rich rock bodies /veins spatially,temporally and genetically.By researches on the gold content,is otopes and REE in different types of rocks,it is con cluded that the origin of the gold and fluid was not from the alkali-rich ro cks,but mainly from the depth of the earth(mantle or the mixing zone of mantle an d lower crust)The relationship between magmatic evolution and gold mineralization is further discussed.

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What this paper is about

Yao'an gold deposit,located in Northwest Yunnan Province,is a typical deposit related to the Himalayan epoch alkali-rich intrusive rocks.The ore-forming process could be div ided into three epoches and five stages.There are several obvious alteration zones in the ore district.The occurrence of o re-bodies or ore-veins are closely r elated to the alkali-rich rock bodies /veins spatially,temporally and genetically.By researches on the gold content,is otopes and REE in different types of rocks,it is con cluded that the origin of the gold and fluid was not from the alkali-rich ro cks,but mainly from the depth of the earth(mantle or the mixing zone of mantle an d lower crust)The relationship between magmatic evolution and gold mineralization is further discussed.

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Available abstract

Yao'an gold deposit,located in Northwest Yunnan Province,is a typical deposit related to the Himalayan epoch alkali-rich intrusive rocks.The ore-forming process could be div ided into three epoches and five stages.There are several obvious alteration zones in the ore district.The occurrence of o re-bodies or ore-veins are closely r elated to the alkali-rich rock bodies /veins spatially,temporally and genetically.By researches on the gold content,is otopes and REE in different types of rocks,it is con cluded that the origin of the gold and fluid was not from the alkali-rich ro cks,but mainly from the depth of the earth(mantle or the mixing zone of mantle an d lower crust)The relationship between magmatic evolution and gold mineralization is further discussed.

Key concepts: Geology, Mineralization (soil science), Geochemistry, Crust, Mantle (geology), Soil water, Soil science

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GEOLOGY AND GENESIS OF THE YAO'AN GOLD DEPOSIT RELATED TO ALKALI-RICH MAGMATIC ROCK IN YUNNAN PROVINCE — Research Paper | ScholarLens