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
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.
Ya-Dong WANG,Si-Chun ZHOU,Xiao-Hui LIU, et al. X-ray fluorescence anomalies in the Chakabeishan exploration area for lithium-beryllium deposits, Qinghai Province:Characteristics and implications for prospecting[J]. Geophysical and Geochemical Exploration,
2023, 47(6): 1635-1642.
Geotectonic and traffic location in the survey area(according to Wang Bingzhang, et al.[1])
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
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
Nb abnormal map of soil X-ray fluorescence measurement in Chakabeishan
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
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)
Wang B Z, Han J, Xie X L, et al. Discovery of the indosinian(beryl-bearing) spodumene pegmatitic dike swarm in the Chakabeishan area in the northeastern margin of the Tibetan Plateau:Implications for Li-Be Mineralization[J] Geotectonica et Metallogenia, 2020, 44(1):69-79.
Pan T, Li S P, Wang T, et al. Metallogenic characteristics and prosppecting potential of lithium deposits in the Qinghai Province[J]. Acta Geologica Sinica, 2022, 96(5):1827-1854.
He L F, Li L, Shen P, et al. Geophysical approaches to the exploration of lithium pegmatites and acase study in Koktohay[J]. Earth Science Frontiers, 2020, 30(5):244-254.
Wei X H, Zhou N N, Zhang S. Detectability of pegmatite lithimu deposits by controled source electromagnetic methods[J]. Earth Science Frontiers, 2023, 30(5):265-274.
Wang B Z, Pan T, Wang Q, et al. Discovery of indosinian highly fractionated granites in the chaqiabeishan area,NE Tibetan Plateau and its prospeting significance[J]. Acta Petrologica sinica, 2023, 39(8):2402-2408.
Lyu S J, Dong G C, Luo Z B, et al. Lithium mineralization characteristics and chronology of spodumene granite pegmatite in the northern Chaka,Mountain Qinghai Province[J]. Acta Petrologica et Mineralogica, 2023, 42(3):350-364.
Zhou S C, Liu X H, Zeng G Q, et al. X fluorescence exploration technology and its application in geological prospecting[M]. Beijing: Science Press, 2022.
Zhou S C, Liu X H, Hu B, et al. Geogas and radioactivity detection technology and experiment of deep mineralization information in key mineral agglomeration area of Nanling[M]. Beijing: China Atomic Energy Press, 2018.
Zang G Y, Zhou S C, Liu X H, et al. The abnormal features and prospecting significance of geogas and X-ray fluorescence in exploration area of uranium deposits in Southeastern Hubei Province[J]. Geological Journal of China Universities, 2014, 20(4):564-569.
Zhao J, Sun Z K, Li M X. Landscape features of Qinghai Province and selection of geochemical exploration methods and techniques[J]. Geophysical and Geochemical Exploration, 2004, 28(3):239-241.
[11]
王予生, 史书乐, 刘守月, 等. 青海土壤[M]. 北京: 中国农业出版社,1997.
[11]
Wang Y S, Shi S L, Liu S Y, et al. Qinghai soil[M]. Beijing: China Agriculture Press,1997.
[12]
朱鹤健, 陈健飞, 陈松林, 等. 土壤地理学[M]. 北京: 高等教育出版社, 2019.
[12]
Zhu H J, Chen J F, Chen S L, et al. Soil geography[M]. Beijing: Higher Education Press, 2019.
