Abstract:On the basis of a systematic analysis, the patterns of rare earth element (REE) of granitic rocks associated with three tungsten ore deposits in South China are reported in this paper, which furnish some special information for the origin and the evolution of granitic rocks in these areas. 1. The REE pattern of the Lianhuashan granitic rocks exhibits a rightward declined curve with a faint negative Eu anomaly. The δEu values are in the range of 0.89-0.48. 2. The REE pattern of the Yangchuling granitic rocks also shows a right-ward declined curve with theδEu values varying from 0.98-0.856. 3. The REE pattern of the Xingluokeng granitic rocks has a V-shaped curve with a strong negativeδEu anomaly. TheδEu values are in the range of 0.37-0.10. With these patterns, one can deal with the origin of granitic rocks related to tungsten mineralization. The granitic rocks in South China often have multiple origins. In Lianhuashan as well as in Yangchuling, all the granitic rocks, having a rightward declined curve, are products of the same magma which mainly came from the mantle and later mixed to some extent with the crustal materials. They areⅠ-type granitic rocks. However, the granitic rocks in Xingluokeng, having a V-shaped REE pattern with strong negative Fu anomaly, belongs to S-type rock system derived mainly from the Earth’s crust. These interpretations agree well with the results acquired from the studies on geology and geochronology.
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满发胜.1985.与华南某些钨矿床有关的花岗岩类的稀土模式特征及其成因问题[J].矿床地质,4(1):47~53.1985.The REE patterns and origin of tungsten- related granitic rocks in South China[J].Mineral Deposits4(1):47~53
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