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Geological Characteristics of Tongchanggou Superlarge Molybdenum Polymetallic Deposit of Yidun Arc in Sanjiang Region, China
Author(s) -
YU Haijun,
LI Wenchang
Publication year - 2014
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 - 10.1111/1755-6724.12374_67
Subject(s) - geological survey , china , citation , library science , chinese academy of sciences , inner mongolia , history , geology , geography , archaeology , computer science , geophysics
Recently studies showed that Xiuwachu-LuoJi Yanshanian epoch acid magma belt which ranges approximately N-S directions, is developed strong molybdenum polymetallic mineralization (Li et al., 2012, 2013; Yu et al., 2012, 2013). The rock belt is plunge southward, and it is possible to find concealed porphyry molybdenum polymetallic mine t in the south segment. It have made a new breakthrough in prospecting in Tongchanggou in 2010, and explored and control vein molybdenum and copper ore shoot represented by KT1 ore body, and as the medium content, then have drilling work at outcropped granodiorite porphyry apophysis in 2011, and revealed wholly mineralized, the industrial ore body was more than 400m in thickness. It revealed prephyry type molybdenum deposit in many drill holes like ZK0451 in 2012, and the industrial ore body were all more than 300m in thickness. The molybdenum metal resources quantity more than 500, 000 tons in 2014, and as a superlarge molybdenum deposit with huge metallogenic prospective in the region. Tongchanggou molybdenum polymetallic deposit is located one side of Yanyuan-Lijiang depression, western margin of Yangtze Block (Fig. 1 and Fig. 2). Permian Heinisao Formation and Triassic Beiya Formation Strata could be found in mining area, and it also develop faults and folds, they formed folds and faults system, which are mostly in direction from northwest, and secondly from northeast. Mafic-intermediate volcanic rocks and intermediate-acid, alkaline intrusive rocks are widely developed in mining area due to strong magmatic activity.