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敦煌金滩子金矿床系20世纪70年代初,在区调工作中检查古代采矿遗迹时发现,80年代开展过普查,经2014~2015年详查提交的一处中型金矿床。矿区由梭子山、八卦图和金滩子3个矿段组成。金矿化受断裂破碎带控制,加里东晚期石英闪长岩为八卦图和金滩子矿段石英脉型金矿的赋矿岩石,华力西中期二长花岗岩为梭子山矿段蚀变岩型金矿的赋矿岩石。目前控制主矿体长151~320 m、斜深155~350 m、矿体平均品位7.61×10~(-6)~17.94×10~(-6),矿体延伸较稳定,金品位较高。黄铁矿、褐铁矿、石英、方解石为主要载体矿物。据对金滩子金矿各矿段深部矿化特点及走向上控矿因素的分析,认为该矿床具有较好的找矿前景。
At the beginning of the 1970s, the Jintanzi gold deposit in Dunhuang City was examined during the redevelopment of the ancient mining relics. It was found that in the 1980s, a general survey was carried out and a medium-sized gold deposit submitted by the detailed investigation from 2014 to 2015 was found. Mining area by the shuttle mountain, gossip map and Golden Beach 3 mine section. Gold mineralization is controlled by fracture and crustal zones. Late Caledonian quartz diorite is the ore-dressing rock of the Bagua Diagrams and quartz vein type gold deposits in the Jintanzi section, and the Variscan intermediate-stage monzonitic granite is altered rock Type ore gold ore. At present, the main ore body is controlled to be 151-320 m in length and 155-350 m in depth. The average grade of the ore body is 7.61 × 10 -6 -6.94 × 10 -6. The ore body extends more steadily and the gold grade is higher . Pyrite, limonite, quartz, calcite as the main carrier minerals. According to the analysis of the deep mineralization features and ore-controlling factors in the various gold sections of the Jintanzi gold mine, it is believed that the deposit has a good prospecting prospect.