四川会理河口地区水系沉积物测量异常评价及找矿标志

Anomaly evaluation and prospecting criteria of stream sediment survey in Huili estuary area, Sichuan Province

为进一步探索四川会理入海口区域锡矿找矿突破,已对其进行了1∶5万河系沉积物测定。通过对测试数据特征分析和因子分析等,进一步深入地研究了多种元件的组合特性,结果显示:银-铅-锌、铋-氟-钨-锡、铜-镍3组主成矿元素各自存在着类似的富集规律,而且锡、钨等中高温元件的富集规律性非常突出,且元件反常空间划分叠合性较好。因此采用累积频率法、迭代法综合解析得出了反常下限制值,并在此基础上制定了多种元件的反常图谱,并圈定,并通过分析,目前在钨、铜、铅、钼等多金属矿床中具有良好的找矿前景。

In order to further explore the breakthrough of tin ore prospecting in the Haikou area of Huili,Sichuan,a 1∶50000 fluvial sediment measurement has been carried out.Through the analysis of test data characteristics and factor analysis,the combination characteristics of various elements are further studied.The results show that the main ore-forming elements of silver lead zinc,bismuth fluorine tungsten tin and copper nickel have similar enrichment laws,and the enrichment regularity of tin,tungsten and other medium and high temperature elements is very prominent,and the abnormal spatial division and superposition of elements are good.Therefore,the cumulative frequency method and iterative method are used to comprehensively analyze and obtain the abnormal lower limit value.On this basis,the abnormal maps of various elements are formulated and delineated.Through analysis,it has a good prospecting prospect in tungsten,copper,lead,molybdenum and other polymetallic deposits.