新疆尉犁县蛭石矿床成因及矿床模式探讨  

DISCUSSION ON GENEISS AND PATTERN OF THE PELHAMITE DEPOSIT IN YULI, XINJIANG

作　　者：殷宝祥 

机构地区：[1]新疆维吾尔自治区地质矿产局第三地质大队

出　　处：《新疆地质》1992年第1期6-21,共16页Xinjiang Geology

摘　　要：本文通过新疆尉犁县蛭石矿床的研究指出,与蛭石成矿密切相关的云母岩是碱性超基性岩经同源高温气液多次反复交代所形成之蚀变岩。并证实,在热液阶段,不能直接形成蛭石矿,只有在风化作用阶段,金(黑)云母经水化之后才铲最终成矿。在搞清成矿地质背景、成矿机制、成矿过程的基础上,确定该蛭石矿床成因类型为:与碱性超基性岩有关的气化—高温热液交代—风化壳型蛭石矿床,并初步构想了该蛭石矿床之成矿模式。The study of the pelhamite deposit in Yuli of Xinjiang indicates that the glimmerite associated closely with the formation of pelhamite is formed by primary alkalic ultramafic rocks undergoing repeated syngenetic high-temperatured pneumatolito-hydrothermal metasomatism. It is also proved that the pelhamite deposit cannot be formed during hydrothermal stage, but can only be formed during the weathering stage at which the biotite went through hydration. On the basis of the metallogenic settings , mechanism and processes the pelhamite deposit is determined to be of pneumatolysis-high temperatured hydrothermal metasomatism-weathering crust types. The primary metallogenic pattern of the pelhamite deposit is also formed.

关 键 词：碱性超基性岩 高温气液交代 金(黑)云母化蚀变 风化作用 成矿模式 

分 类 号：P5[天文地球—地质学]