摘要
热液型铀矿找矿应着眼于寻找中大型矿床,以幔源叠造、深源成矿理论为指导,建立多元复合深源成矿模式。文章指出,热液型铀矿床存在热水循环富集型、岩浆期后热液型、地幔流体富集型等3种不同成因类型及其不同的成矿特点,并常在同一矿化集中区形成一成矿系列。大型铀矿田和富、大铀矿床常与幔源成矿有密切关系,其形成有特定的区域地质背景。文中还初步提出了幔源成矿的识别判据,指出今后找矿应自觉地确立适合于各自地区找矿类型的成矿模式,厘定可操作性强的找矿模式,实现以模式指导找矿。
Prospecting for hydrothermal type uranium deposits should be aimed at medium-to large-sized deposits, and be guided by mantle-sourced, superimposed, deep sourced metallogenic theory and the establishment of a multifactor, composite, deep-sourced metallogenic model. The author suggests that hydrothermal uranium deposits may be classified into three genetic types, i.e. hydrothermal circulation concentration, postmagmatic hydrothermal and mantle fluid concentration. These types of uranium deposits are characterized by their own metallogenic features and are concentrated in the same mineralization-concentrated area forming a metallogenic series. Large-sized uranium ore fields and richlarge uranium deposits are usually closely associated with mantlesourced metallogenesis and the formation of such uranium ore fields and deposits is characterized by specific and unique regional geologic environments. Recognition criteria of mantlesourced metallogenesis are preliminarily proposed in the paper. It is pointed out that prospecting in the future should follow the metallogenic model proper for the specific genetic type, and the establishment of operable prospecting model to realize the model-guided prospecting.
出处
《铀矿地质》
CAS
CSCD
2006年第2期70-75,共6页
Uranium Geology
关键词
热液型铀矿床
深源成矿
深部找矿
找矿模式
hydrothermal type uranium deposit
deep-sourced metallogenesis
deep prospecting
prospecting model
