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某花岗岩型铀矿床中铀天然衰变系长寿命核素和类比微量元量，自该矿床５１Ｍａ前生成以来，未向周围花岗岩中发生远距迁移，铀矿体及近矿岩石至今仍处于化学封闭状态。矿石、岩石裂隙处局部出现有核素、元素迁移和沉淀，因裂隙细小且大多充填有粘土矿物等，迁移距离不足２５－３０ｍ，且仅发生在距今１０－１０６ａ及至今时距内。
The natural decay of uranium in a granite-type uranium deposit is due to its long-lived nuclides and analogous trace elements. Since the deposit was formed 51Ma ago, no long-distance migration has taken place to the surrounding granites. Uranium ore bodies and near-ore rocks are still chemically closed status. There are nuclides and elements migrating and precipitating locally in the ores and rock fractures. Because the fractures are small and mostly filled with clay minerals, the migration distance is less than 25-30 m and only occurs within 10-106 a and up to now.