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Geoscience ›› 2022, Vol. 36 ›› Issue (06): 1513-1524.DOI: 10.19657/j.geoscience.1000-8527.2022.06.07

• Geochemistry • Previous Articles     Next Articles

Geochemical Characteristics and Prospecting on Stream Sediment Survey in Qianhongquan Area of Beishan in Gansu Province, China

CHEN Shiming(), YANG Zhenxi(), LEI Ziqiang, KANG Weiliang, ZHANG Jing, ZHAO Qinghu   

  1. Fourth Institute of Geological and Mineral Exploration of Gansu Provincial Bureau of Geology and Mineral Resources, Jiuquan, Gansu 735000, China
  • Received:2021-04-25 Revised:2022-06-30 Online:2022-12-10 Published:2023-01-11
  • Contact: YANG Zhenxi

Abstract:

After the regional geochemical survey and natural heavy mineral survey with the scale of 1∶200 000, a detailed geochemical survey with the scale of 1∶50 000 was implemented in Qianhongquan area of Beishan in Gansu Province, China. The sampling media in this detailed survey is stream sediments sieved between 4 and 20 meshes and 17 elements (W, Sn, Mo, Bi,Cu,Pb,Zn, Cd,Au,Ag, As, Sb, Hg, Co,Ni,Cr, Nb) were analyzed. The geochemical characteristics such as the statistical parameters of elemental concentrations, elemental assemblages based on correlation analysis and R-type cluster analysis were reported and the geochemical anomalies were determined and assessed. Based on these results of geochemical survey, four metallic prospecting areas are recognized which are Wansuishan Au metallic prospecting area controlled by the fracture zone, Heishantou Au-polymetallic prospecting area controlled by the ductile shear zone, Zhangfangshan Cu-Co-Ni polymetallic prospecting area controlled by the basic rocks, and Hongliugeda W metallic prospecting area controlled by tectonic fractures formed in acidic intrusive rocks. Furthermore, four detailed metallic targets are delineated in these prospecting areas for the future exploration works.

Key words: stream sediments, geochemical characteristics, metallic prospecting area, metallic exploration target, Beishan in Gansu

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