牦牛坪稀土矿床地质构造特征及其控矿意义
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引用本文：.1992.The Geological And Structural Feature Of The Maoniuping Ree Deposit And Its Ore-Controlling Signi Ficance[J].Mineral Deposits,11(4):351~358
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Author NameAffiliation
蒋明全 四川地矿局109地质队 
中文摘要:与碱性花岗岩破碎带有关的碱性伟晶岩、碳酸岩脉型轻稀土矿床，明显受岩性和构造控制。运用地质力学方法，进行区域构造分析，论证了控矿裂隙在矿区呈多字型构造体系，成矿有利的岩性和构造条件。指出两种不同岩性地质体接触带附近，变形大的碱性花岗岩一侧是成矿裂隙发育的有利地段；接触界线突变部位是厚大矿体产出的部位。
中文关键词:构造体系  控矿条件  稀土矿床  牦牛坪
 
The Geological And Structural Feature Of The Maoniuping Ree Deposit And Its Ore-Controlling Signi Ficance
Abstract:The Maoniuping ore district，an alkali pegmatite and carbonate vein type LREE deposit related to the shattered zone of alkali granite，is obviously controlled by lithologic character and structures. With the geomechanical method, the author has conducted a regional tectonic analysis. It is proved that the ore-controlling fissures derived from the north-south clockwise shearing Haha fault make up a xi-type structural system in the ore district. Based on the geological setting of the ore district，the author has investigated the formation mechanism of this ore-controlling structural system and the variation characteristics of ore veins in shape, size, internal texture and structure, mineral association and ore grade at different places of the structural system, indicating lithologic and structural conditions conducive to mineralization. The conclusions have been drawn that places adjacent to the contact zone between two geologic bodies with different lithologic characters and on the side of intensely-deformed alkali granite are favorable for the development of ore-related fissures and that thick and large orebodies are likely to occur at positions where the contact line changes abruptly.
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