| 付治国,靳拥护,吴飞,周明.东秦岭—大别山5个特大型钼矿床的成矿母岩地质特征分析[J].地质找矿论丛,2007,(4):277-281 |
| 东秦岭—大别山5个特大型钼矿床的成矿母岩地质特征分析 |
| GEOLOGICAL CHARACTERISTICS OF HOST ROCKS OF 5 MEGA Mo DEPOSITS IN EAST QINLING-DABIE |
| 投稿时间：2006-07-31 修订日期：2007-06-06 |
| DOI：10.6053/j.issn.1001-1412.2007.4. 007 |
| 中文关键词: 东秦岭—大别山钼成矿带:特大型钼矿床 成矿母岩 地质特征 |
| 英文关键词:the east Qinling-Dabie Mo ore belt Mega Mo deposit host rock of Mo ore geological characteristics |
| 基金项目: |
| 作者 | 单位 | | 付治国 | 河南省地质矿产勘查开发局, 第二地质勘查院, 河南, 许昌, 461000 | | 靳拥护 | 河南省地质矿产勘查开发局, 第二地质勘查院, 河南, 许昌, 461000 | | 吴飞 | 河南省地质矿产勘查开发局, 第二地质勘查院, 河南, 许昌, 461000 | | 周明 | 河南省地质矿产勘查开发局, 第二地质勘查院, 河南, 许昌, 461000 |
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| 中文摘要: |
| 对东秦岭—大别山5个特大型钼矿床成矿母岩地质特征研究认为:①钼矿床成矿母岩为钾长花岗斑岩,岩石中钾长石、石英斑晶均为高温矿物,斜长石以更长石为主;②钼矿床受成矿母岩严格控制,而成矿母岩体则受花岗岩基的控制,三者在空间上关系密切,成矿母岩限制在花岗岩基外接触带10 km范围内;③岩体为复式小岩体,出露面积均小于0.12 km2;④成矿母岩均为强酸性岩石,全部为高酸、高钾、高碱及低镁铝的钙碱性系列的超浅成侵入岩,岩体侵位深度<3 km;⑤成矿母岩微量元素中主成矿元素Mo>10×10-6时易成矿,Mo>50×10-6时易形成大-特大型钼矿床;⑥岩体成岩时代90~165 Ma。 |
| 英文摘要: |
| By analyzing the geological characteristics of the 5 world class Mo deposits in the east Qinling ore belt conclusions are drawn as follows:①Hos't rocks of the 5 deposits are all K-feldspar granoporphyre whose K-feldspar and quartz phenocrystal are high temperature mineral and most plagioclase is oligoclase;②Mo deposits are strictly controlled b the host rock that is controlled by huge granobathdith and the deposit,the host rock and the batholith are spatially,closely related,and the host rock is restricted in the outer contact zone(10 km) of the batholith;③the ore-bearing rock bodies are small in composite and multi-times intrusions with outcroped area<0.12 km2;④the host rocks are all high acidity,hihg alkalinity,high potasium,low Mg,Al Ca alkali series super-shallow intrusive rock with emplacement depth<3 km;⑤where Mo>10×10-6 the host rock tends to host ore and Mo>50×10-6 Large-mega Mo deposit;⑥the rock-forming age of the intrusions are 90-165 Ma. |
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