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编者注:本文从汞矿床的大量实例研究角度,说明在汞矿化过程中铀、钍、钾元素的地球化学特性。证实了在汞矿化热液蚀变岩石带中铀、钍、钾元素有不同程度的带出,含量均都降低。其中钾是更活泼的元素,带出更为强烈。这些带出的元素按照各自的地球化学性质,聚集在汞矿带的个别地段内。作者试图以 Th/K,U/K 的比值圈定矿体,指导汞矿的普查勘探工作。但是,这些实例对寻找与汞相伴生的铀矿化也提供了依据:1.汞与铀的地球化学性质不同,铀的富集与汞矿形成,没有成因联系,在汞矿带内铀元素含量降低。2.汞矿化过程使围岩中铀元素带出,这些岩石中分散的铀常选择适宜的地化环境,富集在汞矿带附近的围岩中,有时可构成工业矿化。3.铀元素的富集常被脉状裂隙控制,多与铁锰物质有关,有时进入造岩矿物的品格呈类质同象形式存在。汞矿化过程提供了铀的重新活动,铀比汞成矿期晚并常叠加在相同的构造体系中。上述观点在铀矿普查和成矿理论上,仅供参考。
Note to editors: In this paper, a large number of case studies of mercury deposits illustrate the geochemical characteristics of uranium, thorium, and potassium during mercury mineralization. Confirmed in the mercury mineralization hydrothermal alteration of rock belt uranium, thorium, potassium with different levels of out, the content is reduced. Potassium is a more active element, bringing out more intense. According to their respective geochemical properties, these extracted elements are collected in individual sections of the mercury zone. The author tries to delineate the ore body by the ratio of Th / K and U / K and guide the general survey of mercury mine. However, these examples also provide a basis for finding uranium mineralization associated with mercury: 1. Mercury is not geochemically different from uranium, and its uranium enrichment is not causally related to the formation of mercury deposits. Uranium Reduced content. 2. Mercury mineralization brings out uranium in the surrounding rock. The uranium dispersed in these rocks is often selected to be suitable for geochemical environment and enriched in the surrounding rock near the mercury zone, sometimes forming industrial mineralization. Uranium enrichment is often controlled by vein fractures, mostly related to iron and manganese materials, sometimes into the rock-like minerals in the form of the phenomenon of the existence of the same type of image. Mercury mineralization provides uranium reactivation, which is late and often superimposed on the same tectonic system as the mercury mineralization. The above point of view in uranium census and mineralization theory, for reference purposes only.