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Advances in Research of Mineral Chemistry of Magmatic and Hydrothermal Biotites
Author(s) -
TANG Pan,
CHEN Yuchuan,
TANG Juxing,
WANG Ying,
ZHENG Wenbao,
LENG Qiufeng,
LIN Bin,
WU Chunneng
Publication year - 2019
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.14395
Subject(s) - biotite , geochemistry , geology , mineral redox buffer , igneous rock , hydrothermal circulation , petrogenesis , skarn , porphyry copper deposit , mineral , mantle (geology) , fluid inclusions , chemistry , paleontology , quartz , organic chemistry , seismology
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.