Study on establishing a mining group of deposit and an exploration grid pattern for lead - zinc ore in Ban Lim area, Cao Bang province

  • Tác giả: Khang Quang Luong; Hung The Khuong; Tuong Van Nguyen; Thu Thi Le
  • Cơ quan:
    1 Faculty of Geosciences and Geoengineering, Hanoi University of Mining and Geology, Vietnam 2 Dong Bac Geological Division, Cach Mang Thang Tam road, Thai Nguyen City, Thai Nguyen, Vietnam
  • Từ khóa: Ban Lim area,Exploration grid pattern,Lead-zinc ore,Mining group.
  • Nhận bài: 05-02-2020
  • Chấp nhận: 26-05-2020
  • Đăng online: 30-06-2020
Trang: 38 - 50
Lượt xem: 191

Tóm tắt:

Ban Lim area in Cao Bang province has proposed a high potential of lead-zinc resources, which have occurred in different rocks of geological formation. The paper-based on collecting, synthesizing, and geological processing data. In addition, mathematical methods were also applied to recognize studied objects of the exploration process using a quantitative description. The results how that the lead-zinc orebodies in Ban Lim area mainly occurred in lens-shaped and distributed in layered surfaces of the dolomitized limestone of Coc Xo formation. The average lead-zinc content of the orebodies is in a range from 3.27% to 8.33%; its coefficient of variation (Vc) is in a range from 13.71% (evenly) to 137.92% (very unevenly). Generally, the lead-zinc contents of the orebodies in Ban Lim area mainly comply with the standard normal distribution. The average thicknesses of the orebodies are in a range from 0.92 m to 6.48 m, its coefficient of variation (Vm) is in the range from 8.7% (stable) to 132.95% (very unstable). Quantitative calculation results have shown that Ban Lim lead-zinc deposit belongs to group III of deposits. For the exploration of this type of minerals, it is recommended to use a linear grid pattern. Appropriate exploration grid pattern for the 122 category reserve is (60÷80) m × (30÷40) m. These calculated results are well- documented foundations that allow suggesting a mining group of deposit and an exploration grid pattern for lead-zinc ore in Ban Lim area and other lead-zinc deposits occurring in similar geological settings.

Trích dẫn
Khang Quang Luong, Hung The Khuong, Tuong Van Nguyen và Thu Thi Le, 2020. Study on establishing a mining group of deposit and an exploration grid pattern for lead - zinc ore in Ban Lim area, Cao Bang province, Tạp chí Khoa học kỹ thuật Mỏ - Địa chất, số 61, kỳ 3, tr. 38-50.
Tài liệu tham khảo

[1]. Do Quoc Binh (ed.), 2004. Report on the prospective setting of lead-zinc, gold, and accompanying minerals in Phia Da - Na Cang area. Vietnam Institute of Geosciences and Mineral resources (in Vietnamese).

[2]. Kazdan, A.B., 1977. Prospecting and exploration of mineral deposits. Nedra Publishers, Moscow (in Russian).

[3]. Nguyen Van Phu (ed.), 2019. Report on exploration of lead-zinc deposit in Ban Lim area, Thai Hoc village, Bao Lam district and Son Lo village, Bao Lac district, Cao Bang province. Dong Bac Geological Division (in Vietnamese).

[4]. Nguyen Van Tuong, 2018. Research on mining group setting and exploration grid for lead - zinc ore type in Ban Lim area, Cao Bang province. Unpublished master thesis. Hanoi University of Mining and Geology (in Vietnamese).

[5]. Phung Quoc Tri (ed.), 2013. Report on the prospective evaluation of lead-zinc ores in Ban Lim - Phi Dam area, Cao Bang - Bac Kan province. General Department of Geology and Minerals of Vietnam (in Vietnamese).

[6]. Pogrebiski, E.O., 1973. Prospecting and exploration of mineral deposits. Nedra Publishers. Moscow (in Russian).

[7]. Saikia, K., Sarkar, B.C., 2006. Exploration drilling optimization using geostatistics: a case in Jharia Coalfield, India. Applied Earth Science 115(1). 13-25.

[8]. Vietnam Ministry of Natural Resources and Environment, 2006. The decision of Promulgating the Regulation on the classification of solid-mineral deposits and resources (Number: 06/2006/QĐ-BTNMT), Ha Noi, June 07, 2006 (in Vietnamese).

[9]. Wellmer, F.W., 1998. Statistical evaluations in exploration for mineral deposits. Springer - Verlag Berlin Heidelberg. Printed in Germany.