CHARACTERISTICS AND SIGNIFICANCE OF THE COPPER-GOLD-ANTIMONY DEPOSITS IN DAGANGOU AREA, EAST KUNLUN
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摘要: 东昆仑地区处于中朝、塔里木-柴达木、扬子和印度板块的拼合部位，元古宙以来经历了多期次的裂解和拼合。该区以Au、Co、Cu、Pb、Zn、Hg、Sb、As元素组合为特征，其中多处已证实为矿致异常，共发现矿床、矿点等198处，初步显示了良好的找矿前景。目前在大干沟一带已发现铜多金属矿化带一条、金锑含矿构造蚀变带一条。矿化特征基本一致，均赋存于中三叠统闹仓坚沟组北西西向脆韧性剪切带内及两侧的灰白-烟灰色方解石石英脉内，且具有南侧金锑矿化、北侧铜多金属矿化的分带特征。Abstract: The East Kunlun area is located at the suture zone of Sino-Korean Plate, Tarim-Qaidam Plate, Yangtze Plate and India Plate. The special tectonic structural location decided its tectonic evolution being very complicated and distinctive. The geochemical anomalies in this area composed by Au-Co-Cu-Pb-Zn-Hg-Sb-As elements and most of them have been confirmed as anomalies related to mineral deposit. 198 ore deposits and ore spots have been found in this area. This showed a favorable ore-searching prospect. Total 6 ore deposits were discovered at Dagangou zone, including a copper multi-metal mineral belt and a gold-antimony ore-bearing structural alteration belt. Their mineralization characteristics are basically same. The ore deposit occurred in the Middle Triassic Naocangjiangou Formation west-northwest brittle-ductile shear zone and ashen-gray calcite quarts vein at the both sides of shear zone.
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图 1 东昆仑区域大地构造位置（据许志琴等，1996，改编）
NCP—华北地台；YZP—扬子地台；TRM—塔里木陆块；ZDM—柴达木陆块；TQ—唐古拉—羌塘地体；LG—拉萨地体；QLS—祁连构造带；QL-DB—秦岭—大别构造带；EKL—东昆仑构造带；WKL—西昆仑构造带；KB—可可西里—巴颜喀拉构造带；ALTF—阿尔金断裂；QNSF—青海南山断裂；WWF—哇洪山—温泉断裂；KNF—昆南断裂；TJF—沱沱河—金沙江断裂；BNF—班公湖—澜沧江断裂；YZF—雅鲁藏布江断裂；Ⅰ—中朝板块；Ⅱ—塔里木—柴达木板块；Ⅲ—华南板块；Ⅳ—印度板块
Figure 1. Tectonic map of East Kunlun Mountain area
图 3 第Ⅰ成矿期含铜石英脉特征
Figure 3. Characteristics of the copper-bearing quartz vein at the first period of mineralization
图 4 第Ⅱ成矿期含铜石英脉特征
Figure 4. Characteristics of the copper-bearing quartz vein at the second period of mineralization
图 5 产于石英方解石脉中辉锑矿特征
Figure 5. Characteristics of the antimonite ore produced in quartz and calcite veins
图 6 产于薄层灰岩中辉锑矿特征
Figure 6. Characteristics of the antimonite ore produced in thin limestone
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