The ore-hosting Yaojia Formation is composed of a set of braided stream medium-fine grained sediments.
姚家组为一套中细粒辫状河流沉积。
Statistical results show that medium and fine-grained sandstones are the most favorable rock types for uranium mineralization.
统计结果表明，中、细粒砂岩是铀矿化最有利的岩石类型。
Theearly stage comprises fine grain adamellite and medium coarse grained porphyritic adamellite, while the late stage, it consists of medium grain adamellite with huge phenocryst.
晚期由斑状中粗粒二长花岗岩、巨斑状中粒二长花岗岩构成。
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