黑龙江省嫩江县三矿沟铁铜矿床矿石特征及意义  

Ore characteristics of the Sankuanggou iron_copper ore deposit in Nenjiang County, Heilongjiang Province, and their significance

作　　者：李运[1,2] 曾辉[1] 乔子鉴 王泽东 赵元艺[2] 符家骏 陈龙[1] 杨波[1] 

机构地区：[1]中国地质大学,北京100083 [2]中国地质科学院矿产资源研究所国土资源部成矿作用和资源评价重点实验室,北京100037 [3]黑龙矿业集团股份有限公司,黑龙江哈尔滨150036

出　　处：《岩石矿物学杂志》2016年第1期97-110,共14页Acta Petrologica et Mineralogica

基　　金：973国家科技计划课题(2013CB429805)"多宝山矿集区成矿潜力评估与战略新区预测"专题;地质调查子项目(12120115066201)~~

摘　　要：三矿沟矿床位于黑龙江省嫩江县多宝山矿集区西北部,为小型矽卡岩型铁铜矿床。在野外地质调查与ICP_MS测试的基础上,通过显微观察、扫描电镜与电镜能谱分析,对三矿沟矿床的矿石特征进行了研究。在矿石中新识别出钨铁矿、白钨矿、锡石、自然铋、碲铋矿、辉铋矿、硫铜铋矿、硫铋铜矿、碲银矿、银金矿、金银矿、自然金,钴黄铁矿、辉砷钴矿、含锌硫砷铜矿等金属矿物。矿石有用金属元素为Cu、Fe、Zn、W、Co、In、Bi,建议对这些元素展开进一步的研究,并在开采时进行综合评价。详细的矿石镜下研究结果显示,矿床形成过程分为内生成矿期与表生期,其中内生成矿期分为干矽卡岩阶段、湿矽卡岩阶段、氧化物阶段(主要的铁矿化阶段)和低热液-硫化物阶段这4个阶段(主要的铜矿化阶段),表生期只包含表生阶段。其中铁矿化形成于高温阶段,铜矿化系中温热液交代形成。Located in the Duobaoshan ore concentration area of Nenjiang County, Heilongjiang Province, the Sankuanggou deposit is a small skarn type iron-copper deposit. On the basis of field geological investigation, ICP-MS test, indoor rock ore appraisal, scanning electron microscopy （SEM） and energy spectrum analysis, the authors studied ore characteristics of the Sankuanggou deposit. Numerous minerals such as empties, ferberite, scheelite, cassiterite, native Bi, tellurobismuthite, wittichite, cobalt-pyrite, hessite, ellurobismuthite, electrum, zinc-bearing enargite, native gold, and kustelite were newly discovered. Useful metals such as copper, iron, zinc, tungsten, cobalt, indium and bismuth should be evaluated so as to understand the characteristics of these elements. In this way, the comprehensive utilization of these elements and the improvement of the economic values can be realized. The formation process of the Sankuanggou deposit can be divided into five stages, in which the endogenous ore-forming period can be divided into four phases, i.e., ① the dry skarn phase, ② the wet skarn phase, ③ the oxide phase, ④ the hydrothermal-sulfide phase, whereas the supergene period only has the supergene phase （phase 5）. The iron mineralization occurred at the high temperature stage, whereas the copper mineralization was produced by hydrothermal metasomatism under the medium temperature condition.

关 键 词：三矿沟铁铜矿床 矽卡岩 矿石特征 成矿阶段 综合利用 

分 类 号：P618.2[天文地球—矿床学]