Advances in Research of Mineral Chemistry of Magmatic and Hydrothermal Biotites  

作　　者：TANG Pan CHEN Yuchuan TANG Juxing WANG Ying ZHENG Wenbao LENG Qiufeng LIN Bin WU Chunneng 

机构地区：[1]Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China [2]Institute of Mineral Resources,Chinese Academy of Geological Sciences(CAGS),Beijing 100037,China [3]China University of Geosciences,Beijing 100083,China [4]Guangxi Nonferrous Metal Group Resource Exploration Co.,Ltd.,Nanning 530023,China [5]College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China

出　　处：《Acta Geologica Sinica(English Edition)》2019年第6期1947-1966,共20页地质学报（英文版）

基　　金：supported by the National Key R&D Program of China (grant number 2018YFC0604101);the Public Science and Technology Research Funds Projects, Ministry of Land Resources of the People’s Republic of China (project nos. 201511017 and 201511022-05);the Basic Research Fund of the Chinese Academy of Geological Sciences (grant no. YYWF201608);the National Natural Science Foundation of China (grant no. 41402178);the Geological Survey project (grant no. DD20160026)

摘　　要：Biotite is an important hydrated ferromagnesian silicate mineral in igneous rocks and porphyry deposits.The determination of chemical compositions of biotite plays an important role in both igneous petrology and ore forming processes.This paper summarizes research results of magmatic and hydrothermal biotites exemplified by the Lakange porphyry Cu–Mo deposit and the Qulong porphyry Cu deposit in the Gangdese porphyry–skarn metallogenic belt,Tibet.Biotite mineral chemistry can provide critical insights into classification,geothermometer,geothermobarometry,oxygen fugacity,petrogenesis and tectonic setting,evaluating magmatic-hydrothermal process by halogen and halogen fugacity ratios,and distinguishing between barren and mineralized rocks.Biotite provides the latest mineralogical evidence on metallogenic prognosis and prospecting evaluation for porphyry Cu polymetallic deposits or magmatic hydrothermal deposits.Biotite is an important hydrated ferromagnesian silicate mineral in igneous rocks and porphyry deposits. The determination of chemical compositions of biotite plays an important role in both igneous petrology and ore forming processes. This paper summarizes research results of magmatic and hydrothermal biotites exemplified by the Lakange porphyry Cu-Mo deposit and the Qulong porphyry Cu deposit in the Gangdese porphyry-skarn metallogenic belt, Tibet. Biotite mineral chemistry can provide critical insights into classification, geothermometer, geothermobarometry, oxygen fugacity, petrogenesis and tectonic setting, evaluating magmatic-hydrothermal process by halogen and halogen fugacity ratios, and distinguishing between barren and mineralized rocks. Biotite provides the latest mineralogical evidence on metallogenic prognosis and prospecting evaluation for porphyry Cu polymetallic deposits or magmatic hydrothermal deposits.

关 键 词：magmatic biotites hydrothermal biotites mineral chemistry porphyry deposit Lakange QULONG GANGDESE 

分 类 号：P58[天文地球—岩石学]