Valley system soils geochemical characteristics and metallogenic prediction of the Yue'e tin polymetallic mining area in Xieng Khouang Province, Laos
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摘要: 老挝川圹省约俄锡多金属矿区位于老挝川圹—越南长山构造岩浆岩带西部,属长山晚古生代—中生代Cu-Fe-Au等多金属成矿带。通过1:2.5万沟系土壤地球化学测量工作,结合元素变化系数、浓集系数及相关性等特征进行分析,通过异常查证优选出多个靶区及远景区,在重点靶区根据化探异常特征推断矿化体位置,通过槽探及钻探等工程验证,取得了较好的找矿效果,认为该区具备铜、锡、铅、锌、钨、金等多金属找矿潜力,表明该方法在东南亚热带季风气候发育的厚覆盖区及大面积空白研究区,可快速圈定找矿靶区及远景区,为下一步勘查工作提供有效依据。Abstract: The tin-polymetallic mining area of the Yue'e ore district, XiengKhouang Province, Laos, is located in the west of the XiengKhouang Laos-Changshan Vietnam tectonic magmatic belt. Based on the 1:25 000 valley system soil geochemical survey, combined with an analysis of the characteristics of element variation coefficients and concentration coefficients, the correlation of elements, anomaly verification, and gold and other polymetallic ore prospecting potentials, the authors optimized multiple target and prospects areas. The position of the mineralized body was inferred based on geochemical exploration anomalies in key target areas. Through trench verification and drilling engineering verification, good prospecting results were achieved. The area is considered to have copper, tin, lead, zinc, tungsten. It is shown that this method can quickly delineate the prospecting target area and distant scenic area in the thick coverage area and extensive blank research area of Southeast Asian tropical monsoon climate, and can provide an effective basis for the next exploration work.
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