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在二叠纪晚期,地幔柱作用形成的峨眉山大火成岩省在我国西南扬子克拉通西部及越南等地产有若干钒钛磁铁矿矿床及铜镍硫化物矿床,其中红格钒钛磁铁矿是我国目前最大的钒钛磁铁矿矿床。地球化学主量元素特征显示其富Fe、Ti,贫Si、Al。微量元素及同位素地球化学特征表明深部的岩浆运移过程可能受到了来自地壳物质的混染。岩体的韵律旋回及岩相、岩性特征、矿物结构表明红格钒钛磁铁矿矿床是岩浆多期次补给之后冷却分离结晶的产物。
In the late Permian, the Emeishan Igneous Province formed by the mantle plume has several vanadium-titanium magnetite deposits and Cu-Ni sulfide deposits in the western part of the Yangtze craton in the southwestern China and Vietnam. The Hongge vanadium-titanium magnetite is China’s largest vanadium-titanium magnetite deposit. The main elemental characteristics of geochemistry show that it is rich in Fe, Ti, poor in Si and Al. Trace element and isotopic geochemical characteristics indicate that the magmatic migration in the deep may be contaminated by crustal material. The cavernous rhyolite and lithofacies, lithology and mineralogical structure indicate that the Hongge vanadium-titanomagnetite deposit is the product of cooling and crystallization after multi-stage magmatic supply.