Abstract
The Dajiangping pyrite deposit is hosted in a carbonate-clastic rock series which is characterized by a bioreef-chert suite in its middle part. Conformable lenses of various sizes constitute the orebodies which often branch transitionally into the surroundings. Syngenetic deformation fabrics can be observed in orebody No. 3. Orebody No. 4 is composed almost entirely of massive pyrite, with conspicuous hydrothermal sedimentation and bacterium-alga features. The hydrothermal sedimentation origin is also reflected by simple chemistry of the ore (predominated by quartz and pyrite), the presence of U and Th, and the REE compositions of pyrite and ankerite. The ores are rich in organic matter and the difference in organic content between the banded ores and the massive ores is mainly owing to the difference in the clastic components they contain rather than to the subsequent processes of reworking. Go/Ni ratios in the ore may reflect the temperature pattern during hydrothermal sedimentation.
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References
Bostrom, P.A., 1983, Genesis of ferromanganes deposit—diagnostic criteria for recent and old deposits, in Rona, P. A. et al., eds., Hydrothermal processes at seafloor spreading centers: New York, Plenum Press, p. 473–489.
Chen Zhuqi, Wang Henian, and Li Hongyan, 1992, The discovery of algal fossils from the Dajiangping pyrite deposit, western Guangdong, and its geological implications: Journal of Nanjing University (Geoscience edition), v. 4, n. 1, p. 82–85 (in Chinese with English abstract).
Chen Xianpei, Chen Duofu, Dong Weiquan et al., 1993, Genesis, lead isochron and tectonic environment of the magnetite bearing quartzite, Longquan, Zhejiang, in Li Jiliang, ed., The structure and evolution of the continental lithosphere in Southeast China: Beijing, Metallurgical Industry Press, p. 149–157 (in Chinese).
Fleet, A.J., 1983, Hydrothermal and hydrogenous ferromanganes deposits: do they form a continuum? The rare earth element evidence, in Rona, P. A. et al., eds., Hydrothermal processes at seafloor spreading centers: New York, Plenum Press, p. 535–555.
Michard, A., F. Albarede, D. Michard et al., 1983, Rare earth elements and uranium in high-temperature solutions from East Pacific rise hydrothermal vent field (13°): Nature, v. 303, p. 797.
Qiu Yuanxi, Peng Shaomei, Zhang Boyou et al., 1996, Geological Characters and Evolution of the Yunkai Metamorphic Block: Guangzhou, the Editorial Board of Zhongshan University, p. 1–62 (in Chinese).
Tang Jiafu, Fu Heqing, and Yu Zhiqing, 1987, Stratigraphy, type and formation condition of the Late Precambrian silica-iron formations in South China: Mineral Deposits, v. 6, n. 1, p. 1–10 (in Chinese with English abstract).
Tu Guangzhi, Wang Xiuzhang, Chen Xianpei et al., 1993, Evolution and Mineralization in the South China Proterozoic Basement: Beijing, Science Press, p. 1–194 (in Chinese).
Tu Guangzhi, Wang Xiuzhang, Chen Xianpei et al., 1988, Geochemistry of Strata-bound Deposits in China (Volume III): Beijing, Science Press, p. 152–168 (in Chinese).
Zhang Baogui, Zhang Qian, Pan Jiayong et al., 1994, Trace element characteristics and their implications, Dajiangping pyrite deposit, western Guangdong: Geology and Prospecting, v. 30, n. 334, p. 66–71 (in Chinese with English abstract).
Zhang Baogui, Zhang Qian, Cao Yibo et al., 1990, Geochemistry of the ultra-large pyrite deposit, Dajiangping, in Li Chaoyang and Zhu Xiangkun, eds., Yearbook of the Open Laboratory, Institute of Geochemistry, Chinese Academy of Sciences: Guiyang, Guizhou Scientific and Technological Publishing House, p. 91–104 (in Chinese).
Zhang Renjie, Ma Guogan, Feng Shaonan et al., 1992, Sm-Nd ages of the Shilu iron deposit and implications, Hainan: Geoscience, v. 27, n. 1, p. 38–43 (in Chinese with English abstract).
Zhang Qian, Zhang Baogui, Cao Yibo et al., 1993, Sulphur and lead isotopes of the Dajiangping pyrite deposit, western Guangdong: Acta Geologica Sinica, v. 67, n. 3, p. 232–242 (in Chinese with English abstract).
Zhang Qian, Zhang Baogui, Pan Jiayong et al., 1992, Characters and REE patterns of the hydrothermally deposited siliceous rocks, Dajiangping pyrite deposit, western Guangdong: Chinese Science Bulletin, v. 37, n. 17, p. 1588–1592 (in Chinese).
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This project was financially supported by the National Natural Science Foundation of China (No.49572114) and the key project B of the Chinese Academy of Sciences (KZ 952-S1-435).
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Duofu, C., Guangqian, C., Jingming, P. et al. Hydrothermal sedimentation characteristics of the Dajiangping superlarge pyrite deposit, Yunfu, Guangdong. Chin. J. Geochem. 17, 331–337 (1998). https://doi.org/10.1007/BF02837984
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DOI: https://doi.org/10.1007/BF02837984