铀矿地质2017，Vol.33Issue(5)：257-265,9.DOI:10.3969/j.issn.1000-0658.2017.05.001
东胜铀矿田的铀石研究
Research on Coffinite in Dongsheng Uranium Field
摘要
Abstract
Dongsheng uranium field is located in the northeast part of Erdose basin.Uranium deposits occurred in the sandstone of lower part of the lower member of Middle Jurassic Zhiluo formation.Uranium minerals are very small in size.The main uranium mineral is found to be coffinite by the electrowmicroprobe analysis.Coffinite occuerrs in the matrix of sandstone,often distributed around the rims of frag ments,pyrite or marcasite,oxidizing illmenite in the sandstone.The crystal form of coffinite is the combination of tetragonal columnar prism and pyramidal face by SEM and often form spherulites of crystalline aggregate.The separated uranium minerals from the ore are confirmed to be coffinite by the X-ray diffraction analysis.关键词
鄂尔多斯盆地东北部/直罗组下段下亚段/砂岩型铀矿床/铀石Key words
the northeast part of the Erdos basen/Zhiluo formation lower member/sandstone type uranium deposit/coffinite分类
天文与地球科学引用本文复制引用
方锡珩,李子颖..东胜铀矿田的铀石研究[J].铀矿地质,2017,33(5):257-265,9.
