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西澳大利亚灰质结砾岩中发现一个大型铀矿床证实,这种矿床类型在经济上有重要意义。灰质结砾岩是一种由近地表的地下水形成的地表石灰岩;铀来源于附近风化的花岗岩,铀呈钒钾铀矿产于灰质结砾岩的孔洞和裂隙中。钒在使铀固定于难溶的钒钾铀矿的过程中起了重要作用,看来钒来源于周围的红土。由于灰质结砾岩明显地是地表和近代成因,铀的形成必然与其类似。这种地表作用对科罗拉多型沉积矿床成因的重要性是显而易见的。此外,脉型沥青铀矿床中铀的地表成因也可以合理地解释矿床与不整合和富铀花岗岩杂岩体之间在空间和时间上的关系。北澳大利亚铀矿区的脉型矿床是说明脉型沥青铀矿床中的铀为地表来源的良好例证。
The discovery of a large uranium deposit in gray-grained conglomerates in Western Australia confirms that this type of deposit is economically significant. Caryophyll conglomerates are surface limestones formed by near-surface groundwater; uranium originates from nearby weathered granites that are found in vugs and fissures of gray-clump conglomerates. Vanadium plays an important role in fixing uranium to poorly soluble vanadium potassium uranium deposits. It appears that vanadium originates from the surrounding red clay. Since the gray-clump conglomerate is obviously the surface and the modern genesis, the uranium formation must be similar to it. The importance of this surface effect on the genesis of the Colorado deposit is evident. In addition, the surface genesis of uranium in pulse-type uranium deposits can also explain the spatial and temporal relationship between ore deposits and unconformity and uranium-rich granite complex. Vein deposits in uranium deposits in North Australia are a good illustration of the uranium in surface-veined uranium deposits as a surface source.