新疆若羌坡北地区镁铁-超镁铁质侵入岩含矿特征及找矿方法探讨

A tentative discussion on features of mafic-ultramafic rocks and exploration methods in Pobei area of Ruoqiang,Xinjiang

新疆若羌坡北地区因发现了众多岩浆硫化物型镍矿而受到关注,坡一镍矿为近期发现评价的超大型岩浆硫化物型铜镍矿床。但未发现有规模的高品位富矿体,不能满足矿产开发的条件。文章从坡北镁铁-超镁铁岩带地质特征出发,对坡北地区已经发现的岩浆硫化物矿床含矿特征进行了归纳总结,分析岩体就位成矿有利部位,开展了富矿成矿预测。结合已经总结出的综合地质、物探、遥感、化探等的找矿方法组合,通过地质实践,取得了很好的找矿进展,首次在坡北一带发现了深熔贯入式镍矿床——坡东镍矿。

The Pobei area in Ruoqiang of Xinjiang has drawn much attention among geologists due to numerous magmatic sulfide nickel deposits discovered in this area. The Poyi deposit is a magmatic sulfide copper nickel ore deposit discovered recently. Due to its low grade ore and lack of high grade rich orebodies, it can not meet the requirements of mineral development. Based on geographic features of mafic- ultramafic rocks on the ntorthern slope, the authors summarized the features of magmatic sulfides already discovered, and made an analysis of favorable ore- forming conditions so as to carry out ore metallogenic prediction. In combination with the comprehensive methods for ore exploration which comprise geography, physical exploration, remote sensing and chemical exploration, the authors made a pretty good progress through practice： the anatectic penetration type Podong Ni deposit was discovered for the first time in Pobei area.