内蒙古东乌旗索纳嘎银铅锌矿床矿体特征及深部成矿预测
作者：张瀚夫 make sb田艳丽 完美英文丛明磊
来源：《西部资源》2016年第04期
touchpanel 摘要：索纳嘎银铅锌矿床成因类型为中低温热液矿床，矿体赋存于早白垩世斑状细粒花岗岩体与下侏罗统红旗组地层接触带。主矿体1条，即1新东方考研辅导班号矿体。矿体受NEEproblem什么意思走向平行裂隙控制，矿化类型为交代——充填型。矿体切穿红旗组地层和斑状细粒花岗岩体，倾角较陡。矿体呈脉状、透镜状，走向NEE，倾向北西，倾角45°～70°，矿体向南西方向侧伏，侧伏角55°。矿化富集规律为：岩体接触带凹陷部位矿化富集，控矿裂隙延走向凹陷部位矿化富集，控矿裂隙倾角由缓变陡的部位矿化富集。根据矿体产状规律及矿化富集特征推测，矿区西南方向（8线以西）深部（海拔400米以下）是深部找矿的有利地段。
关键词：内蒙古东乌旗；索纳嘎；银铅锌矿床；矿体产状特征；矿化富集规律；成矿预测
Abstract： The Suo Naga Silver-lead-zinc deposit is medium or low temperature hydrothermal deposit. The ore-body occurred in the contact zone of porphyritic fine-grained
granite in early cretaceous and Hongqi Formation of lower Jurassic. No.1 ore-body is the main ore-body. It’s controlled by a parallel crack with NEE55°±strike， and its mineralization type is metasomatic-filled type. The ore-body cut through the stratum of Hongqi Formation and porphyritic fine-grained granite. The dip angle is a little high. The ore-body prents with vein and lenticular mode， NEE strikecbd什么意思>boilerplate， north-west dip，ruu dip angle between 45°and 70°。语种 The ore-body lateral-trend is south-west， and pitch is 55°. There are such places which are mineralized enrichment： the depresd part of contact zone between lithosomes； the depresd part of ore-controlling crack extending the strike；m培训 dip angle of ore-controlling from slight to steep. It can make a conjecture from the attitude of ore-body and the characters of mineralized enrichment. The south-west of mining area（the west of line 8， blow the altitude of 400 meters） is the preferable deep ore-finding area.
