Advances in Research of Mineral Chemistry of Magmatic and Hydrothermal Biotites

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 hydrother...

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Bibliographic Details
Published in:Acta geologica Sinica (Beijing) 2019-12, Vol.93 (6), p.1947-1966
Main Authors: TANG, Pan, CHEN, Yuchuan, TANG, Juxing, WANG, Ying, ZHENG, Wenbao, LENG, Qiufeng, LIN, Bin, WU, Chunneng
Format: Article
Language:English
Subjects:
Biotite
Chemical composition
Copper
Deposits
Evaluation
Exploration
Fugacity
Gangdese
Halogens
hydrothermal biotites
Hydrothermal deposits
Igneous rocks
Lakange
Lava
Magma
magmatic biotites
mineral chemistry
Organic chemistry
Petrogenesis
Petrology
Porphyry copper
porphyry deposit
Qulong
Ratios
Silicate minerals
Silicates
Tectonics
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Summary: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.
ISSN:1000-9515
1755-6724
DOI:10.1111/1755-6724.14395