宾川小龙潭斑岩铜钼矿找矿新思路的讨论及前景分析

The Discussion and Prospective Analysis of the Ore-searching New Train of Thought for the Xiaolongtan Poyphyry Cu-Mo Deposit in Binchuan

本文结合矿区最新勘查成果,从成矿背景、物质来源、矿化特征等方面揭示了矿区具有较好的成矿地质条件和矿化信息。笔者通过疏理决定矿区找矿方向的关键环节,提出矿区斑岩体的侵入方向与区域NE向构造-岩浆带一致,主导矿区富碱斑岩带总体呈NE向展布并由NW向SE侵入的认识,进一步调整了找矿思路。并分析展现了矿区具有寻找大型-超大型斑岩铜钼矿床的前景,对区域喜山期富碱斑岩带的地质找矿工作具有一定的启示作用。

In combination with the newest exploration achievements,this paper deals with the Xiaolongtan poyphyry Cu-Mo ore district in the aspects of ore-forming background,material sources and mineralization characteristics and,on such a basis,points out that there exist fairly favorable geological conditions and mineralization information in the ore district.Based on organizing various kinds of metallogenic information,the authors determined the key link for ore-prospecting work in the ore district,and pointed out that there exists the consistency between the invading direction of the porphyry body in the ore district and the NE-trending tectonic-magmatic belt,and that the major alkali-rich porphyry belt in the ore district assumes NE-trending distribution and invaded from northwest to southeast,thus readjusting the train of thought for ore-prospecting.The authors also indicate through analysis that there exists the possibility of finding large-superlarge porphyry Cu-Mo deposits in the ore district.The results obtained by the authors play some instructive role in search for mineral deposits in regional Himalayan period alkali-rich porphyry belt.