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南华砷铊矿床位于云南省南华县城东南 ,距县城 55km。矿床主要产于上侏罗统江边组雄黄厂段 (J13 c) ,以砷和铊元素组合为特征 ,属于典型的低温热液改造矿床。通过矿床地质、碱金属、碱土金属和稀土元素的地球化学研究 ,对矿床成矿作用进行讨论。成矿流体是具有 δCe和δEu负异常的酸性溶液 ,基本保留了矿源层的稀土分布模式。在成矿过程中亲石元素和亲硫元素均不同程度地参与成矿作用。
Nanhua arsenic thallium deposit is located in southeastern Nanhua County, Yunnan Province, 55km from the county seat. The deposit is mainly produced in the Xionghuang Factory Section (J13c) of the Upper Jurassic Riverfront Formation. It is characterized by a combination of arsenic and thallium and is a typical low-temperature hydrothermal alteration deposit. The mineralization of the deposit is discussed through the geochemical study of the geology, alkali metals, alkaline earth metals and rare earth elements in the deposit. The ore-forming fluid is an acidic solution with negative δCe and δEu, which basically retains the rare earth distribution pattern of the source bed. In the mineralization process, lithophile elements and pro-sulfur elements are involved in mineralization to varying degrees.