云南大红山矿区秀水矿床地质特征及找矿前景探析

通过对大红山矿区秀水铁铜矿床地质特征及不同矿化/矿体特征的分析,表明矿床严格受地层岩性因素及断裂构造控制,具明显的层控型,其中凝灰质片岩、钠质凝灰岩及白云石大理岩是区内典型的成矿岩性组合,矿质的富集则与绿泥石、黑云母及钠长石蚀变作用有关。分析认为区内矿化类型复杂,火山岩型铁矿和沉积成岩型铁矿矿体多赋存于肥味河组及曼岗河组。综合分析认为该区找矿前景良好,是大红山矿区进一步找矿的重要靶区。

Discussion of geological characteristics and ore-prospecting of Xiushui deposit in Dahongshan mining area, Yunnan province

According to the study about the geological characteristics and different mineralization/ore body of Xiushui Iron-Copper Deposit in Dahongshan mining area, the result shows that the distribution regularity of the deposit is strictly controlled by formation lithology and fault structure. The ore bodies show obviously stratum-controlling characteristic. In addition, the tuffaceous schist, natriuretic tuff and dolomite marble are the typical mineralize lithologic association in the mining area. The enrichment of the ore minerals are closely related to the chloritization, biotitization and altibization. Based on these analyses, we considered that the mineralization of deposit is complicated, and the ore body of volcanic type iron and sedimentary-diagenetic type are occurred in the Feiweihe formation and Manganghe formation. Besides, these areas have good ore-prospecting vision, some ore-prospecting target directions are pointed out.