广西珊瑚钨锡矿田的原生分带及矿化富集规律

为指导深部、边部生产勘探及开采工作,对珊瑚钨锡矿田的原生分带及矿化富集规律进行了研究,发现:珊瑚钨锡矿田产出有钨锡石英脉、钨锑萤石石英脉和含钨石英角砾脉3种矿化类型,这3类矿化在水平上以长营岭隐伏花岗岩为中心,从东向西形成了单侧分带;钨锡石英脉矿床在垂向上呈"五层楼"形态分带模式;原生矿物组合分带呈亲氧和挥发性元素在上,亲硫元素在下的"逆向"分带,即上部富锡,中部富钨,下部Cu、Zn、Ag增加的规律;矿化富集同围岩的岩性、矿脉脉辐、矿脉产状形态等多种因素有关,造成了矿化分布极不均匀。根据矿床的原生分带特征和矿化富集规律,推测在矿床的深部仍然具有较大的找矿潜力。

Original Ore Zoning and Regularity of Mineralization Enrichment for Shanhu W-Sn Deposit, Guangxi Province

Original ore zoning and regularity of mineralization enrichment is studied for guiding exploration and exploit in deep and edge areas in the Shanhu W-Sn deposit, Guangxi province. There are three kinds of ores in this deposit： W-Sn quartz vein, W-Sb fluorite quartz veins and W-quartz brecciaed veins, these three kinds of ores in the horizontal with the Changyingling hidden granites as the center, forming a unilateral zoning from east to west; patterns of W-Sn quartz vein ores in the vertical direction are conformed to ＂five-story＂ mode, the law of primary mineral assemblage is of ＂reverse＂ zoning with oxophilic and volatile elements in upper space and chalcophile elements in the lower layers, such as the upper part is Sn-rich, central is rich in W, the lower part is Cu-Zn-Ag enriched; ore grade is closely related to the wall rock lithology, veins pulse width, veins occurrences, and ete, which caused the ores are extremely uneven distribution. It proposed that the deposit have giant prospecting potential in the deep on the basis of original zoning rules of mineralization enrichment.