综合地气测量在湘南仁里外围稀有金属矿勘查中的应用

doi:10.11720/wtyht.2023.0296

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Abstract

In this study, six survey lines were deployed in the Huangbaishan survey area in the periphery of the Renli mining area in southern Hunan Province. An integrated geogas prospecting was applied to explore granite pegmatite-type rare metal deposits in the study area. Based on the characteristics of soil X-ray fluorescence and geogas anomalies above the known pegmatite veins in the mining area, this study captured five soil X-ray fluorescence anomaly zones aligning with the formation trend, with the (Nb+Ta+Rb) cumulative value obtained from X-ray fluorescence measurements as the primary prospecting indicator. The Nos. 1~4 anomaly zones exhibit consistent spatial positions with the known pegmatite veins. Accordingly, this study inferred the positions, trends, and lengths of possible pegmatite veins, and a possibility of extension for the known veins based on the anomaly length. The No. 5 anomaly zone discovered on the south side of the survey area, with a length exceeding 1 000 m, serves as a new prospecting target. Geogas prospecting was conducted along the No. 11 survey line in the middle of the No. 4 anomaly zone with a length of over 1 500 m, capturing the geogas anomalies of elements Li, Be, and Nb that reflect the deep mineralization information of pegmatite veins. This confirms that pegmatite veins in the survey area have significant extensions towards the deep part.

Key words： soil X-ray fluorescence measurement (Nb+Ta+Rb) constrast cumulative value geogas prospecting deep ore-bearing information granite pegmatite-type rare metal deposit

Received: 25 July 2023 Published: 23 January 2024

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	Articles by authors
	Xue-Jun GAN
	Si-Chun ZHOU
	Xiao-Hui LIU
	Deng-Hong WANG
	Chun-Hua WEN

Cite this article:

Xue-Jun GAN,Si-Chun ZHOU,Xiao-Hui LIU, et al. The application of an integrated geogas prospecting for exploring rare metal deposits in the periphery of the Renli mining area, southern Hunan Province[J]. Geophysical and Geochemical Exploration, 2023, 47(6): 1649-1656.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2023.0296 OR https://www.wutanyuhuatan.com/EN/Y2023/V47/I6/1649

3-4]
a—geotectonic location of Mufushan mining agglomeration area; b—geology and mineral distribution in Mufushan mining agglomeration area
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Simplified map of geology and minerals in Mufushan rare metal mining area^[3-4]
a—geotectonic location of Mufushan mining agglomeration area; b—geology and mineral distribution in Mufushan mining agglomeration area

Geological sketch and engineering deployment map of Renli mining area and peripheral
1—medium-grained porphyry-like biotite monzonitic granite; 2—Lengjiaxi schist; 3—pegmatite vein and number; 4—speculative faults; 5—geological boundaries; 6—X-ray fluorescence measurement area; 7—X-ray survey line and number; 8—geogas survey line and number

X-ray fluorescence measurement elements of Renli mining area and peripheral soil samples in Pingjiang County, Hunan Province

Analysis elements of Renli mining area and peripheral ground gas samples in Pingjiang County, Hunan Province

Main element analysis results of Renli mining area and peripheral geogas samples in Pingjiang County, Hunan Province

Comprehensive profile of soil X-ray fluorescence multi-element measurement of 44 line in Renli mining area

Comprehensive profile of geogas survey of 44 line in Renli mining area

Measurement area (Nb+Ta+Rb)/Zr normalized accumulation ratio plane isometric map in Huangboshan area
1—medium-grained porphyry-like biotite monzonitic granite; 2—Lengjiaxi schist; 3—pegmatite vein and number; 4—speculative faults; 5—geological boundaries; 6—X-ray fluorescence measurement area; 7—survey line and number; 8—the abnormal area defined by the mean value plus 5 times standard deviation; 9—the abnormal area defined by the mean value plus 2 times standard deviation;10—X-ray fluorescence anomaly number

Comprehensive profile of geogas survey of line 11 outside the Renli mining area

Interpretation of the inference of predicted veins in Huangboshan area
1—medium-grained porphyry-like biotite monzonitic granite; 2—Lengjiaxi schist; 3—pegmatite dikes and number; 4—speculative faults; 5—geological boundaries; 6—X-ray fluorescence measurement area; 7—survey line and number; 8—speculative veins

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