【作者】 孟玉明；

【导师】 汤井田；

【作者基本信息】 中南大学 ， 地质工程， 2009， 硕士

【摘要】 内蒙古太仆寺旗金豆子矿床是一个以铅锌为主,伴生银的铅锌多金属矿床。大地构造位置位于华北地台北缘、白云鄂博裂谷带中。本文分析了金豆子矿区矿床地质特征及地球物理特征,研究了矿床成因、成矿规律,并对矿区的找矿前景进行了分析,提出了三个找矿远景区,为下一步的找矿工作提供了理论依据。经研究发现,研究区大面积出露的花岗岩体属燕山早期花岗岩体,区内出露地层主要为为中元古界白云鄂博群(Pt2B)。区内最主要的控矿构造为北东向的F1断裂构造,矿体的产出对围岩没有选择性,矿床成因属中低温热液矿床。与铅锌矿化有密切关系的围岩蚀变主要有硅化、绢云母化、含铁锰碳酸盐化。矿体具有低阻高极化的特征,双频激电方法能很好地反映矿体的矿化信息、定位矿体。已经发现的矿床主要由4个矿带组成,包括12个矿体组成,其中Ⅰ号矿带的Ⅰ号矿体为主矿体,Ⅰ号矿体走向57°,长大于600米,最大延深492米以上,平均厚度5米,其他矿体规模小。通过对矿区的成矿背景、矿床成因、控矿因素和成矿规律等的分析和研究,金豆子矿区具有很好的找矿前景。特别是在矿区的南面,发现三条北东向铅锌矿化断裂破碎带和数条褐铁矿化断裂破碎蚀变带,为本区最重要的找矿远景区。更多还原

【Abstract】 The Jindouzi ores are a lead, zinc and Argentine metallic bed. The deposit are located at the north edge of Huabei Uplift, Baiyunerbo rift valley belt.The paper analysizes the geological features and geophysical characteristics of the Jindouzai deposit, takes studies on the genesis of ore deposit and ore-controlling factors, makes a forecast of the prospecting potential for the mining area, puts forward three prospecting areas, and provides a theoretical basis for the next phase of exploration.The large area of granite exposed in this area id the early Yanshan granite, and the exposed stratain the region are mainly the Bayan Obo group Mesoproterozoic (Pt2B), the output of the rock body is not selective, the most important ore-controlling structure is the north-east of the F1 fault, the genesis of ore deposits belongs to epithermal deposits, the wall-rock alteration closely related to lead-zinc mainly includes silicification, sericite and carbonate content of Mn, the ore body has the characteristics of low resistivity and high polartization, the dual-frequeency IP method can well reflect the mineralization information, body positioning in this mining area.The deposits have been found by the four major ore belt, including 12 bodies, of which No.I body in No.Iore belt is the main ore body. No.I body is towards northwest strike 57°, up to 600 meters, the largest extension isf more than 492 meters deep, with an average thickness of 5 meters, and the other ore body is small-scale.Through analysizing and research on the metallogenic background, genesis of ore deposit, ore-controlling factors and metallogenic rules, the Jindouzi mining area has a good prospecting. Especially in the south of the mining area, three northeast lead-zinc faults and several broken limonite alteration zone in this area are the most important area of prospecting.更多还原