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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:

2007年第04期

Page:

351-355

Research Field:

基础地质与矿产地质

Publishing date:

Info

Title:

Fluid Inclusions Characteristics and Physicochemical Condition of Tuolugou Cobalt Deposit,Qinghai

Author(s):

ZHU Hua-ping¹; SUN Feng-yue²; LI Bi-le²; WANG Li²

1. Chengdu Institute of Geology and Mineral Resources, Chengdu 610082, Sichuan, China; 2. School of Earth Sciences, Jilin University, Changchun 130061, Jilin, China

Keywords:

fluid inclusions;  physicochemical condition;  ore-forming fluid;  cobalt deposit;  Tuolugou

PACS:

P618.4

DOI:

-

Abstract:

The fluid inclusions of Tuolugou cobalt deposit are studied by Homogenization Method and Laser Raman Method. The systematical study shows that the type of fluid inclusions is multiplicity, mainly including two types: two phase liquid-vapor inclusions and abundant CO2inclusions. The homogenization temperatures of fluid inclusions ranges from 220℃ to 300℃(frequent 275℃), which indicates that the ore-forming fluids were formed under low-middle temperature condition. According to calculating other thermodynamic parameters, the ore-forming fluids in ores are characteristic of low-middle salinity, low density and weak deoxidize-deoxidize. Finally, based on the analysis of liquid-vapor phase compositions of inclusions, the compositions are similar to submarine hydrothermal, and it puts forward the new proof about the metallogeny of submarine sedimentary exhalation of ore deposit.

References:

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