谢通门色药异常区铜找矿前景浅析

Copper exploration prospects in the Seyao area,Xaitongmoin,Xizang

本文在区域地质、水系沉积物测量、土壤测量和高精度磁测等方面对色药异常区的铜找矿前景进行初步分析。利用1∶5万水系沉积物测量编制异常图,发现区内Mo、Cu、Bi、Pb、Zn、Sb、Sn、W、Ag、Hg等元素均有不同规模的异常,且Mo、Cu异常规模较大。通过高精度磁测结果显示区内有3个磁异常,已知铜矿化点均位于磁异常附近。通过土壤测量数据研究元素间的组合关系,推断区内可能的矿床类型与酸性侵入岩有关的斑岩型铜多金属矿。并对区内已发现的1号铜矿化点进行重点研究,表明区内寻找与中酸性侵入岩有关的铜多金属矿具有良好的找矿前景。

The preliminary study of the copper exploration prospect in the Seyao area, Xaitongmoin, Xizang is based on regional geology, stream sediment survey, soil survey and high-precision magnetic survey. The elemental anomalous diagrams based on the stream sediment survey in the Seyao area have disclosed anomalies in the elements such as Mo, Cu, Bi, Pb, Zn, Sb, Sn, W, Ag and Hg, especially in Mo and Cu. Furthermore, some existing copper-mineralized spots occur near the three magnetic anomalous fields, indicated by the magnetic contour diagram based on the 1：50 000 high-precision magnetic survey in the Seyao area. It is inferred, from the elemental associations based on the soil survey in the Seyao area, that the copper deposits in the Seyao area may be acidic intrusive-associated porphyry copper polymetallic ore deposits. It follows that the study area is expected to be prospective area for the copper polymetallic ore deposits associated with the intermediate-acidic intrusive rocks in the Seyao area.