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ZHANG Wenbing, CAI Minghai, LI Qiang, et al. Fluid Inclusion Study and Genesis of the Youmapo W-Mo Deposit in Guangxi Province[J]. Northwestern Geology, 2017, 50(2): 178-190.
Citation: ZHANG Wenbing, CAI Minghai, LI Qiang, et al. Fluid Inclusion Study and Genesis of the Youmapo W-Mo Deposit in Guangxi Province[J]. Northwestern Geology, 2017, 50(2): 178-190.

Fluid Inclusion Study and Genesis of the Youmapo W-Mo Deposit in Guangxi Province

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  • Received Date: January 15, 2017
  • Revised Date: February 14, 2017
  • Available Online: July 28, 2022
  • Published Date: June 04, 2017
  • Occurred in the Lower Devonian skarn, the Youmapo tungsten-molybdenum deposit is a large-size recently evaluated skarn type deposit in the Bobai-Cenxi W-Mo-Pb-Sn-Au-Ag metallogenic belt, southeast Guangxi.Four stages of skarn-type ores have been distinguished, i.e., Stage Ⅰ-dry skarn stage, Stage Ⅱ-wet skarn stage, Stage Ⅲ-quartz and sulfide stage, and Stage Ⅳ-carbonate and fluorite stage.In addition, the Stage Ⅱ and the Stage Ⅲ are main metallogenic stages.In order to explore the characteristics of ore-forming fluid in mineralization, the microthermometry of fluid inclusions has been used to research the nature of the ore-forming fluids in the main ore-forming stage.Results indicate that the homogenization temperatures of the fluid inclusions in stage Ⅱ and Ⅲ mainly vary from 280 to 340℃ and from 260 to 320℃, whereas their salinities mainly range from 3.33% to 5.94% and from 5.05% to 9.99%, respectively.The ore-forming fluid in this deposit has the characteristics of medium to high homogenization temperatures and low salinity.Boiling and mixing have occurred during the mineralization.The ore deposit is a medium to high magmatic hydrothermal replacement filling type deposit, and the mineralization in the area was related to late Yanshanian Youmapo pluton.
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