Minerogenic prospective prognosis of leaching type turquoise on the northwestern margin of Wudang Uplift
Jian ZHANG1,2,3, Xue-Zhong YU3, Yi-Chuan LI3
1. State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China 2. School of Earth Sciences and Resources, China University of Geosciences (Beijing), Beijing 100083, China 3. Aero Geophysical Survey & Remote Sensing Center for Natural and Resources, Beijing 100083, China;
Turquoise, a phosphate mineral assemblage of Cu, Al, is a valuable gem mineral. The western margin of Wudang Uplift in Hubei-Shaanxi border is an important producing area of high quality turquoise. Based on an analysis of geological characteristics and geological conditions of turquoise deposits, the authors hold that turquoise deposits mainly occur in lower Cambrian (carbon-bearing) siliceous rocks and are controlled by fault structures. Combined with the geophysical and geochemical characteristics of the deposits, the authors point out some ore-hunting indicators of turquoise deposits in this area as follows: Cambrian (carbon-bearing) siliceous strata, well-developed fault structures, areas with high Cu content, and areas with high radioactivity (high U content). According to geological, geophysical and geochemical data, the first and second order minerogenic prospective areas of turquoise were delineated.
Jiang Z C, Chen D M, Wang F Y , et al. Thermal properties of Turquoise and its intergrowing minerals in a certain district of China[J]. Acta Mineralogica Sinica, 1983,2(3):198-206,247.
Tu H K . Study of characteristics of the main jade deposits in Qinling region[J]. Contributions to Geology and Mineral Resources Research, 2000,21(1):85-91.
[6]
涂怀奎 . 秦岭东段绿松石成矿特征[J]. 建材地质, 1997,12(3):24-25.
[6]
Tu H K . Metallogenic characteristics of Turquoise in eastern Qinling Mountains[J]. China Nonmetallic Minerals Industry, 1997,12(3):24-25.
Wang P A, Chen Y C, Pei R F , et al. Regional minerogenetic series, tectono-minerogenic cycles and evolution in the Qinling Orogenic Belt, China[M]. Beijing: Geological Publishing House, 1998.
Chen S B, Xie J T, Ding L . Study on metallogenic regularity of Turquoise mineral resources in Zhushan County[J]. Low Carbon Word, 2015,32(16):130-131.
Liu S F . Study on the distribution of basins, faults and igneous rocks by gravity and magnetic data in the South China Sea[D]. Beijing:China University of Geosciences (Beijing), 2018.
Ma Y X . Geological characteristics and economic evaluation of Turquoise deposits in Yunyang area[J]. Geological Science and Technology Information of Hubei, 1989,4(12):14-18.