Metallization regularity and prospecting target area in Panzhihua-Xichang area of Sichuan Province
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摘要: 以牦牛坪稀土矿为代表的攀西地区是我国重要的稀土资源成矿带,攀西稀土矿包括岩浆热液型、伟晶岩型、第四系砂矿型、火山岩型和离子吸附型等类型。重点针对牦牛坪矿床的成矿地质背景、矿化特征及成矿条件等成矿机制进行分析,研究控矿与成矿要素、成矿规律; 完善了岩浆热液型轻稀土矿床成矿模型; 厘清了区域上不同类型矿床的产出特点及各类型矿床的内在成因联系,并科学分析区域稀土资源,圈定稀土找矿靶区,进一步缩小找矿范围。Abstract: The Panzhihua-Xichang area is important rare earth metallogenetic belt in China, represented by the Maoniuping rare earth ore. The rare earths ores in Panzhihua-Xichang include magmatic-hydrothermal type, pegmatitic type, Quaternary placer type, volcanic type and ion-absorption type. The metallogenic mechanisms, such as geological background, mineralization characteristics and metallogenic conditions of the Maoniuping rare earth ore, were discussed and the ore-controlling/forming factors and ore-forming rules were investigated in this paper. Besides, the metallization model for magmatic-hydrothermal light rare earth ores was perfected, and the inherent genetic relationships and production characteristics of various types of rare earth ores have been identified to scientifically analyze the regional rare earth resources and delineates prospecting target, which could further reduce the prospecting scope.
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