土壤铁锰氧化物结合态元素提取技术在内蒙古新巴尔虎右旗头道井铜金矿地球化学勘查中的应用试验

doi:10.11720/wtyht.2019.0013

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Abstract

The ore-prospecting effect of the stream sediment survey and the soil geochemistry survey is not ideal in the covered areas of the hilly grassland landscape where the water system is not developed whereas the aeolian sand is very developed. Therefore, it is imperative to carry out some new ore-prospecting experiment for prospecting breakthrough. In this study, the experiment was carried out by using the Fe-Mn oxides bound in the soil samples in a selected experimental site. The Toudaojing Cu-Au deposit in Xin Barag Right Banner of Inner Mongolia was selected as the experimental site. Soil samples were collected in the ore area and its periphery. Element concentrations in the Fe-Mn oxides bound in soil samples were determined by matched analysis of scheme including plasma mass spectrometry, atomic fluorescence spectroscopy and flameless atomic absorption spectrometry. Areal test for this geochemical ore-prospecting technique was carried out for delineating geochemical anomaly. Geochemical anomaly was verified by drilling, and new concealed gold orebodies were found. The results show that accuracy and precision tests of the analytical method could satisfy the requirements of geochemical ore-prospecting. The Fe-Mn oxides bound in soil samples can effectively delineate the prospecting target area and find concealed gold deposits in the Toudaojing Cu-Au deposit in Xin Barag Right Banner of Inner Mongolia. Therefore, it is a successful case of geochemical ore-prospecting in the covered area.

Key words： covered area geochemical prospecting Fe-Mn oxides bound gold mine concealed orebody

Received: 07 January 2019 Published: 15 August 2019

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Corresponding Authors: Hang-Xin CHENG E-mail: hangxin@vip.sina.com

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	Articles by authors
	Fan YANG
	Zhi-Hong HAO
	Su-Rong ZHANG
	Jin-Li XU
	Jing-Bin WANG
	Hang-Xin CHENG
	Rui-Zhong HU
	Shun-Yao ZHANG

Cite this article:

Fan YANG,Zhi-Hong HAO,Su-Rong ZHANG, et al. A geochemical ore-prospecting experiment by extracting Fe-Mn oxides bound in soil samples in the Toudaojing Cu-Au deposit in Xin Barag Right Banner, Inner Mongolia[J]. Geophysical and Geochemical Exploration, 2019, 43(4): 692-701.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2019.0013 OR https://www.wutanyuhuatan.com/EN/Y2019/V43/I4/692

Schematic map of traffic location and regional structure in the Toudaojing Cu-Au deposit

Geological map of the Toudaojing Cu-Au deposit

Accuracy and precision tests of the method

Relative error of repeated sample tests%

Characteristic values of elements in Fe-Mn oxides bound

Au and comprehensive geochemical anomaly map of the test area

Sb geochemical anomaly map of the test area

As geochemical anomaly map of the test area

Comprehensive anomaly analysis map of geophysical and geochemical exploration in the test area

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