Abstract
Following the study of inclusions in tin deposits of Gejiu, an investigation was made into the shape, salinity, composition as well as formation temperature and pressure of the inclusions in various magmatic rocks, which reveals the existence of obvious similarity and inheritance between inclusions in different deposits and those in various granite rocks. The boiling inclusions in granite are closely related to tin mineralization. Both pneumato-hydrothermal deposits and cassiterite sulphide deposits are derived from the Laoka granite body, subjected mainly to gas-phase boiling, while only the cassiterite sulphide deposits are produced from the Masong rock body which underwent liquid-phase boiling. As for the rock bodies poorly related to tin mineralization, boiling is observed merely in their vicinities or on both sides of fractures. This characteristic can serve as one of the indicators for ore prospecting.
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References
Chen Yinhan, 1981. Geochemistry of Inclusions in Minerals. Hebei College of Geology (in Chinese).
Huang Fusheng, Mu Zhiguo, Chen Cheng and Wang Zhifen, 1983. The Study of isotopic composition of oxygen, hydrogen and carbon in granites of tin deposits, Gejiu. Acta Petrologica Mineralogica Et Analytica, Vol. 2, No. 4, 241–247 (in Chinese).
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Wang Zhifen, Yin Chengyu, 1982. Evolutionary rule and minerogenetic relation of the tin granite in Gejiu. Proceedings of International Symposium on Geology of Granites and Their Metallogenetic relation, 55–56 (Abstracts in English).
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© 1988 United Nations New York
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Zhifen, W., Quin, Z. (1988). The Relationship Between the Fluid Inclusions in Minerals from Magmatic Rocks and the Mineralization of the Tin Polymetallic Deposit in Gejiu, Yunnan, China. In: Hutchison, C.S. (eds) Geology of Tin Deposits in Asia and the Pacific. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-72765-8_37
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DOI: https://doi.org/10.1007/978-3-642-72765-8_37
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-72767-2
Online ISBN: 978-3-642-72765-8
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