湖南大义山岩体白沙子岭矿区钨锡矿深部找矿探索

发布时间：2018-11-19 18:14

【摘要】：大义山花岗岩体受"大义山式"北西向张扭性断裂构造控制,具多次侵位的特点,与岩体有关的矿产主要为锡多金属矿。本次补勘的白沙子岭锡矿区有云英岩脉型、蚀变岩体型、矽卡岩型等3类锡多金属矿类型。白沙子岭矿段平行排列的矿脉群在平面上整体呈一椭圆形展布,脉群从中间向两侧单脉的长度、厚度、品位逐渐变小,单个脉体从中间向两端厚度、品位逐渐变低。矿脉两端顶底板断层面上见到产状完全相反的擦痕,推断深部存在着一个椭圆形隐伏母岩体,成矿母岩的上部会形成蚀变岩体型矿体。为此本次补勘工作施工了一坑内深钻,上部见到了蚀变岩体型富锡矿体,下部见钨矿,预测深部找矿有较大的找矿前景。
[Abstract]:The Dayishan granite body is controlled by the "Dayishan type" NW trending tensional and torsional fault structure and has the characteristics of multiple emplacement. The ore related to the rock mass is mainly tin polymetallic ore. There are three types of tin polymetallic deposits in Baishailing tin ore area, such as quartz vein type, altered rock type, skarn type, etc. The parallel arrangement of the vein group in Baishailing ore section is an elliptical distribution on the plane. The length, thickness and grade of the single vein group from the middle to the two sides gradually become smaller, and the single vein body becomes thicker from the middle to the two ends, and the grade becomes lower gradually. On the fault plane of the top and bottom plate at both ends of the ore vein, there are completely opposite scratches, and it is inferred that there is an elliptical concealed parent rock body in the deep part, and the upper part of the ore-forming parent rock will form the altered rock type orebody. For this reason, deep drilling in a pit has been carried out in this supplementary exploration work. The altered rock type rich tin ore body is found in the upper part and tungsten ore is seen in the lower part of the project. The prediction of deep ore prospecting has a great prospect.
【作者单位】：湖南省地质矿产勘查开发局;湖南省地质矿产勘查开发局409地质队;湖南省核工业地质局304地质大队;中国五矿湖南桂阳锡业有限公司;
【基金】：湖南省大义山地区锡多金属矿整装勘查(201003005) 五矿桂阳锡业有限公司白沙子岭锡矿补充勘查项目联合资助~~
【分类号】：P618.67;P618.44

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