新疆富蕴县希勒阔腊金矿矿床地质特征及控矿因素

新疆富蕴县希勒阔腊金矿位于扎河坝-阿尔曼台金、铜、铬、铁等多金属成矿带中段, 金矿体赋存于北西向构造蚀变带中, 成矿地质条件非常有利, 但找矿成果欠佳。通过对矿床区域地质背景、矿床地质特征、矿化蚀变特征及地球化学异常特征等的分析, 总结了矿床的控矿因素, 并与新疆青河县顿巴斯套外围金矿的控矿因素做了对比, 认为希勒阔腊金矿成因类型为受构造、地层及中酸性岩脉综合控制的构造蚀变岩型金矿, 下泥盆统托让格库都克组凝灰质碎屑岩是主要矿源层, 成矿作用同多期动力热液活动有关, 发育于闪长玢岩与围岩的内外接触带为重要的赋矿部位。在扎河坝-阿尔曼台断裂带两侧的韧脆性剪切带中, 对于有利的地层及岩脉发育部位所圈定的1:10万和1:5万金化探异常进行查证, 有望找到小到中型金矿。

Geological Characteristics and Ore-Controlling Factors of Xilekuola Gold Deposit in Fuyun County,Xinjiang

The Xilekuola goldmine of Fuyun County is located in the middle of the metallogenic belt consisted of Zhaheba-Aermantai gold, copper, chromium, iron and other metals. Gold ore bodies occur in the northwest trending structural alteration zone, where the mineralization geological conditions are very favorable, but prospecting results are poor. Through analyzing the regional geological setting, geological characteristics, mineralized alteration and geochemistry characteristics, ore-controlling factors of the deposit were summed up and compared with the Dunbasitao external gold deposit of Xinjiang Qinghe County. It is believed that the Xilekuola goldmine is a tectonic altered rock type gold deposit controlled by structure, strata and medium-acid dyke. Lower Devonian Tuoranggekuduke group tuffaceous rocks are the main ore source layers and the mineralization is related with multi-stage dynamic hydrothermal activity, which developed from inner and outer contact zone of the diorite porphyrite. On both sides of ductile-brittle shear zone in the Zhaheba-aermantai fault, investigations conducted on favorable layer and development of dike area delineated by 1:100 000 and 1:50 000 geochemical anomalies are expected to find a small or medium-sized gold mines.