摘要
通过横断山区锡矿化花岗岩研究表明,锡的富集成矿多与复式岩体有关,尤其是中晚期侵入的地质体更有利于锡的成矿。REE组成与锡的富集也是密切相关,如∑LREL<150ppm,∑HREE>50ppm,δEu=0.01—0.14,稀土模式曲线呈对称深“V”形,是锡富集成矿的重要标志。
Studied in this paper are the mode of occurrence, petrology, petrochemistry, Sn abundance and REE geochemistry of Sn-mineralization granitoids in the Mt. Hengduanshan Region. The results show that the concentration of Sn increases with decreasing LREE but increasing HREE in the complex plutons associated with Sn mineralization. Generally, LR.EE< 150ppm, HREE >50 ppm, δ Eu -0.01-0.14 and a symmetrically V-shaped curve representing the REE patterns are the important indices of Sn enrichment and mineralization.
出处
《地球化学》
CAS
CSCD
北大核心
1989年第4期297-303,共7页
Geochimica
基金
国家自然科学基金
