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铀矿物主要为沥青铀矿，形成于早元古代。 Uranium mineral is pitchblende which was formed in Lower Proterozoic. | ||
铀矿、铝矾土、锰矿储量居世界第三位。 Uranium ore, bauxite, manganese ore reserves, ranks third in the world. | ||
华南是中国最重要的铀矿产区之一。 South China is one of the most important uranium producing areas in China. | ||
尼日尔拥有铀矿，同时还是潜在的石油输出大国。 Niger has uranium and is a potential big oil exporter as well. | ||
提出该岩体晶质铀矿复成因的证据。 Evidence shows that the uraninite is of polygenesis. | ||
文章研究了鄂尔多斯盆地东胜地区砂岩型铀矿成矿年代学特征。 This paper studied the geochronology of sandstone-type uranium deposit in the Dongsheng area of Ordos Basin. | ||
迭部铀矿田；成矿条件； 控矿要素；铀资源量扩大方向； Diebu orefield; geological conditions; ore-forming factors; orientation for expanding uranium resources; | ||
本文阐述珠光岩体中晶质铀矿的物理化学特征、产出位置和共生组合。 Described in this paper are the physicochemical characteristics, occurrence, locality and paragenesis of uraninite in the Zhuguang mass. | ||
比如，含75％氧化铀的某种沥青铀矿物质的放射性是铀氧化物放射性的4倍。 Thus, certain pitchblendes containing 75% of uranium oxide are about four times as radioactive as this oxide. | ||
该文研究了桂东北地区三种不同类型铀矿床中沥青铀矿及其围岩的稀土元素分布模式。 The distribution patterns of rare earth elements of pitchblende and surrounding rocks in three types of uranium deposits have been studied. | ||
