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Review on Research Result for Bophi Vum Chrome Mineralized Zone in Northwestern Myanmar
미얀마 북서부 보피붐 크롬광화대 연구결과 리뷰
Econ. Environ. Geol. 2019 Oct;52(5):499-508
Published online October 31, 2019;  https://doi.org/10.9719/EEG.2019.52.5.499
Copyright © 2019 the Korean society of economic and environmental gelology.

Chul-Ho Heo1,2*, Chung-Ryul Ryoo3 and Gyesoon Park2,4
허철호1,2* · 류충렬3 · 박계순2,4

1Mineral Resources Development Research Center, Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Korea
2Department of Mineral and Groundwater Resources, University of Science and Technology (UST), Daejeon 34113, Korea
3Center for Active Tectonics, Geology Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Korea
4Convergence Research Center for Development of Mineral Resources (DMR), Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon 34132, Korea
1한국지질자원연구원 광물자원연구본부 자원탐사개발연구센터, 2과학기술연합대학원대학교 광물지하수자원학과 3한국지질자원연구원 국토지질연구본부 활성지구조연구단, 4한국지질자원연구원 DMR 융합연구단
Received July 29, 2019; Revised September 2, 2019; Accepted October 4, 2019.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
 Abstract
Based on the preliminary surveys for the occurrences of the Muwellut chrome-nickel mineralized zone (800 km2) in northwestern Myanmar, Bophivum area was selected as the detailed exploration area after considering data source, geological potential, metallogenic province, necessity of resource development on target mineral, exploration activity, grade, ore deposit type, nearby operating mine, infrastructure and exploration prediction effect. From 2013 to 2016, KIGAM and DGSE carried out geological and geochemical survey with 1:1,000 scale, magnetic survey(areal extent, 1.672km2), trench survey(19 trench, total length 392 m), pitting survey(18 pit, total depth 42.6m), exploration drilling(6holes 600m, 2015; 13holes 617.4m). We analyzed Cr and Ni contents of 77 drill cores with specific gravity in Yangon DGSE analytical center. Considering surface geological survey, geochemical exploration, magnetic survey, trench survey and drilling data, we divided Bophivum area into 8 blocks. Resource estimation are divided into measured and indicated resources. Measured resource is about 9,790t and indicated resource is about 12,080t with the average grade of Cr 11.8% and Ni 0.34%. In case of Bophivum area, if we develop by tying up Webula chrome mineralized zone in the south, it will be possible to upgrade the medium-scale mine. Geologically, the ophiolite belt are distributed in the western and eastern part in Myanmar. So, the exploration technology obtained from exploation in Bophivum area will be helpful to discover the hidden chromitite ore body in Myanmar ophiolite belt in the future.
Keywords : exploration, resource estimation, chrome, Bophivum, Myanmar

 

December 2019, 52 (6)