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| X-ray fluorescence anomalies in the Chakabeishan exploration area for lithium-beryllium deposits, Qinghai Province:Characteristics and implications for prospecting |
WANG Ya-Dong1, ZHOU Si-Chun2( ), LIU Xiao-Hui2, HU Bo2, WANG Guang-Xi2, XU Yun-Fu1, CAO Hong-Liang1, FAN Xin-Sheng2, HAN Ruo-Pu2 |
1. Key Laboratory of the Northern Qinghai-Tibet Plateau Geological Processes and Mineral Resources, Qinghai Geological Survey Institute, Xining 810012, China
2. Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province, Chengdu University of Technology, Chengdu 610059, China |
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Abstract The research on exploring pegmatite-type lithium-beryllium deposits through soil X-ray fluorescence measurements was conducted in the Chakabeishan exploration area of Ulan County, Qinghai Province. The results demonstrate that soil secondary halos formed by granite pegmatite-type lithium-beryllium deposits can be accurately captured by measuring two groups of indicator elements, i.e., Ca, Ni, Mn, Fe, and Nb, Ta, Rb, K. The X-ray fluorescence anomalies of the first group of elements indicate the position of the ore-hosting horizon (i.e., granitic pegmatites). Those of the second group of elements are used to determine the location, strike, and planar extension range of the pegmatite veins with mineralization manifestation. As inferred from the captured X-ray fluorescence anomalies, the main ore veins in the exploration area exhibit significant extensions along the northwest and southeast directions. This conclusion provides a reference for further prospecting work.
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Received: 05 July 2023
Published: 23 January 2024
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1])
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Geotectonic and traffic location in the survey area(according to Wang Bingzhang, et al.[1])
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Geological sketch of the Chakabeishan area
1—measured geological boundaries;2—measured faults;3—pegmatite vein;4—X-ray fluorescence line and number;5—pegmatite vein belt;Qb-O3c—Chakabeishan schist formation;C-P2g—Permo-Carboniferous Guokeshan formation;δoO3—Ordovician quartz diorite;C-P2t—Permo-Carboniferous Tu'ergendaban formation;Qhpal—Holocene alluvial deposits
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14 elements comprehensive profile by X-fluorescence measurement in XP3 line
1—tourmaline granite pegmatites;2—quartz diorite;3—dimica quartz schist;4—fault; 5—beryllium ore body;6—beryllium mineralization;7—drilled holes and their numbering;8—X-fluorescence measurement profile
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Nb abnormal map of soil X-ray fluorescence measurement in Chakabeishan
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Fig.5a, the legends is the same as Fig.4;in Fig.5b,the legends is the same as Fig.2
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Nb anomaly at the southeast end of the X-ray fluorescence survey area of Chakabeishan(a) and its inferred interpretation(b)
1—geological boundaries; 2—fault; 3—measured soil X-ray fluorescence profile; 4—X fluorescence anomaly band numbering; 5—pegmatite vein belt; 6—inferring pegmatite dike groups;in Fig.5a, the legends is the same as Fig.4;in Fig.5b,the legends is the same as Fig.2
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Fig.5)
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Nb anomaly at the northwest end of the X-ray fluorescence survey area of Chakabeishan(a) and its inferred interpretation(b)(the legend is the same as Fig.5)
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