摘要
崖湾锑矿矿区所在的大地构造分区为秦岭造山带南秦岭加里东-印支褶皱带,处于秦岭东西向构造带西延部位。矿区所在的成矿带为南秦岭鹿儿坝-崖湾金、锑成矿带。矿区内出露层为中生界三叠系三渡水组岩层,根据区域地质资料该层属于上部三叠系灰岩夹中厚层粉砂岩层。该矿床所有矿体都赋存于层间断裂,矿体上盘为透水性较差的板岩,构成矿液的隔挡层,矿体下盘或围岩则为具有化学性活泼的灰岩,利于矿液交代。通过对研究区的矿体特征分析,对成矿规律进行了总结。
The geotectonic division of Yawan antimony mining area is the Caledonian Indosinian fold belt of the south Qinling orogenic belt,which is located in the west extension of the east-west structural belt of Qinling.The ore-forming belt of the mining area is Lu'erba-Yawan gold and antimony ore-forming belt in south Qinling.The exposed layer in the mining area is the Middle Triassic Sandu formation rock layer.According to the regional geological data,the layer belongs to the upper Triassic limestone intercalated with medium thick silty sand layer.All ore bodies of the deposit are located in interlayer faults.The upper wall of the ore body is slate with poor water permeability,which forms a barrier layer for ore fluid.The lower wall or surrounding rock of the ore body is limestone with chemical activity,which is conducive to ore fluid replacement.Based on the analysis of ore body characteristics in the study area,the metallogenic regularity is summarized.
作者
李爱平
LI Ai-ping(Lanzhou Mineral Exploration,Gansu Nonferrous Metals Geological Exploration Bureau,Lanzhou 730046,China)
出处
《甘肃冶金》
2020年第4期111-115,共5页
Gansu Metallurgy
关键词
崖湾锑矿
地质特征
成矿规律
Yawan antimony deposit
geological characteristics
metallogenic law
