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Genetic Relationship between Rhyolite Porphyries and Lead-Zinc Mineralization in Lizikeng Volcanic Basin, Northern Wuyishan
详细信息   
摘要

    

Lizikeng volcanic basin is located in the east section of the Mesozoic Yuefengshan-Lizikeng volcanic rock belt, northern Wuyi Mountains. The known lead-zinc (copper,  silver) ore-bodies or mineralization which are shown as veinlet-disseminated and vein ores are mainly occurred in internal or external contact zones and wall rocks of rhyolite porphyries, where wall-rock alterations such as potassic alteration, chloritization, silicification and epidotization are well developed. The results of geochemical analyses show that the rhyolite porphyries belong to strongly peraluminous calc-alkaline series rocks. The lead-zinc deposit can be genetically divided into subvolcanic porphyry vein type and subvolcanic hydrothermal fracture zone type, belonging to subvolcanic porphyry vein type lead-zinc (copper, silver) metallogenic series.

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