油柑窝组油页岩与煤层伴生，分布在煤层顶部，是最主要的含矿层位，形成于半深湖相沉积环境。
The Youganwo Formation is the main mining horizon where the oil shale lies on the top of coal beds. The sedimentary environment of the oil shale belongs to a moderate deep lake system.
含矿层位的富铀沉积砂体及蚀源区富铀的岩体、石炭系碎屑岩以及火山碎屑岩等，构成铀成矿铀源。
Uraniferous sandstone accumulated during the deposition and the uranium leached from the source area rocks by weathering are main sources for uranium mineralization.
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