| 王茵,黄锐华.乌奴格吐山斑岩铜钼矿床地质特征及成矿模式[J].地质找矿论丛,1988,(2):47-58 |
| 乌奴格吐山斑岩铜钼矿床地质特征及成矿模式 |
| GEOLOGICAL FEATURES AND METALLOGENIC PATTERN OF THE PORPHYRY COPPER-MOLYBDENUM DEPOSIT OF THE WULUGETU MOUNTALN, INNER MONGOULIA |
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| DOI：10.6053/j.issn.1001-1412.1988.2. 005 |
| 中文关键词: 乌奴格吐山 斑岩铜钼矿床 二长花岗斑岩 蚀变 |
| 英文关键词: |
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| 中文摘要: |
| 乌奴格吐山斑岩铜钼矿床是燕山晚期中酸性岩浆多次活动的产物。矿床的成矿母岩是同源异期多阶段形成的四个二长花岗斑岩小岩体,岩体的直接围岩是燕山早期黑云母花岗岩。矿床形成于斑岩活动晚期。由于富含成矿元素及挥发组分的中高温气液流体,引起斑岩体及其外接触带普遍遭受蚀变而产生多种蚀变类型,它们以斑岩体为中心呈环状分布。铜钼矿体主要赋存于石英绢云母化带,次为钾长石化带。 |
| 英文摘要: |
| The porphyry copper-molybdenum mineralization in the Wulugetu mountain is a newly-discovered, large and typical, supergene porphyry deposit, located in the south 12 kilometers of Manzouli city. Strata within the area consist of the upper Jurassic continental facies intermediateacid volcanic rock series. The fracturing structure and magmatic activities are frequent, comprising intermediate-acid volcanic lava, biotite granite, granite aplite and diorite of early Yanshan period. Complex activities of ore-bearing porphyry bodies which were controlled by NE and NW striking conjugate fractures occurred in late Yanshan period. After mineralization, explosion breccia occurred along both east and west ring fractures, and also rhyolite and andesite veins intruded the radiating fractures in later stage. There are four cognate host rocks of multistages in the mineralized area, which apparently differ in space and metallogenic regularities. Explosion breccia pipes and stocks of monzonite granite porphyry are the ore-forming host rock. The alteration range is larger than 6 km with several metallogenic centres. Repeated metasomatism and superposition are caused by multi-stage events of porphyry rocks, thus resulting in the Wulugetu deposit. |
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