| 李恒友.内蒙古大苏计钼矿地质特征及找矿标志[J].矿产勘查,2012,3(3):310-318 |
| 内蒙古大苏计钼矿地质特征及找矿标志 |
| Analysis on geological characteristics and prospecting indicators of Dasuji molybdenum ore,Inner Mongolia |
| 投稿时间：2011-11-29 |
| DOI： |
| 中文关键词: 斑岩型 矿床地质 找矿标志 大苏计钼矿 |
| 英文关键词: porphyry mineral deposits prospecting indicator Dasuji molybdenum |
| 基金项目: |
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| 中文摘要: |
| 大苏计钼矿床产于燕山晚期浅成—超浅成侵入岩体中,钼矿体赋存于斑岩体顶部和接触带,尤以石英斑岩和正长花岗岩体的矿化较为发育,而正长花岗岩为成矿期岩体,近矿围岩具绢云母化,与矿体呈渐变过渡关系。矿化最集中的部位与绢云母化蚀变相吻合,以细脉浸染状钼矿体为主。矿床的形成受区域性深断裂的控制。矿化与浅成—超浅成中酸性岩具有密切关系,成矿过程从岩浆晚期阶段延续到中低温热液阶段,形成硅酸盐蚀变和氢交代蚀变,故认为矿床是壳源斑岩型钼矿床。 |
| 英文摘要: |
| Dasuji molybdenum mineral deposit emerges in hypabyssal-ultrhypabyssal intrusion of late Yanshan Age. The molybdenum ore body exists at the top of porphyry and its contact belt, in which the mineralization of quarts porphyry and syenogranite especially evolves. The syenogranite belongs to metallogenic epoch rock body, and its labor wall rock is of sericitization, having transition relation with ore body. The most concentrative part of the mineralization is in accord with sericitization alteration, giving priority to veinlet dissermination-type molybdenum ore body. The formation of ore body is controlled by the regional deep fracture, and its mineralization is closely related with hypabyssal-ultrhypabyssal acid rock. The metallogenic procedure continues from late period of magma to mesothermal-epithermal period, thus forming the silicate erosion and hydrogen metasomatism erosion. So the molybdenum mineral deposit is thought of as crust-derived porphyry-type molybdenum deposit. |
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