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本文系统研究了相山火山热液型铀矿田磷灰石与富铀矿床形成之间的关系。研究表明：该区富矿石中铀含量与五氧化二磷含量呈正相关关系；电子探针揭示富铀矿体中铀矿物周围有大量磷灰石存在，磷灰石在富铀矿石中以两种形式产出：一种是结晶自纯的晶体磷灰石；另一种是胶体磷灰石，后者与铀矿化关系密切。笔者在调研了磷、铀地球化学性质相似性及磷灰石沉淀的物理化学条件的基础上提出：胶体共沉淀是导致本区富铀矿形成的主要原因。
This paper systematically studies the relationship between the apatite and the uranium rich uranium deposits in the Xiangshan volcanic hydrothermal uranium orefield. The results show that there is a positive correlation between the content of uranium and the content of phosphorus pentoxide in the ore in the area. The electron probe reveals the existence of a large amount of apatite around the uranium ore in the enriched uranium ore body. Forms of output: one is crystalline self-pure crystal apatite; the other is colloidal apatite, which is closely related with uranium mineralization. On the basis of investigating the similarity of geochemical properties of phosphorus and uranium and the physicochemical conditions of apatite precipitation, the author puts forward that colloid co-precipitation is the main reason leading to the formation of uranium rich ore in this area.