Abstract
The age of alkali-rich porphyries in the western margin of Yangtze Platform is 30–50 Ma; the minerals mainly are orthoclase, quartz, plagioclase; the chemical composition is alkali-rich [(K2O+Na2O)>8%], highpotash[(K2O+Na2O)=5.09%−8.30%]; the content of ΣREE is relatively low, LREE is concentrated, without anomaly of europium; the average initial ratio of 87Sr/86Sr is 0.7073; the value of δ34S similar to that of the meteoritic sulfur; the ratio of Pb isotope corresponds to that of upper mantle; metallogenic types belong to Cu, Mo, Au, Ag, Pb, Zn polymetal mineralization and rare, rare-earth metal mineralization.
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References
Tu Guangzhi. The preliminary study of two alkali-rich intrusive bodies in Southern China (in Chinese). Tu Guangzhi ed. Collection of Papers of Nanjing Symposium for the Origin of International Granite. Beijing: Science Press, 1984. 1–8
Zhang Yunan, Tu Guangzhi. The preliminary study of the relation between alkali-rich intrusive body in Ailaoshan-Jinshajiang and rift valley structure. Lithological Journal (in Chinese), 1987, 5(1):17
Hu Xiangzhao. The origin of alkali-rich granite porphyry in Western Yunan Province. Journal of Chinese Nonferrous Metal (in Chinese), 1995, 4(1):1
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Project supported by the Key Program of the 8th Five-year Plan of China
Synopsis of the first author Hu Xiangzhao, associate professor, born in Dec. 1949, majoring in Petrology and Geochemistry.
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Hu, X. Property and metallogenic characteristics of alkali-rich porphyry in western margin of Yangtze Platform. J Cent. South Univ. Technol. 5, 130–133 (1998). https://doi.org/10.1007/s11771-998-0054-3
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DOI: https://doi.org/10.1007/s11771-998-0054-3