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1974年在阿基坦盆地北部开始进行野外找铀。发现了一些地球化学异常和矿化,特别是在Dronne河北部、纪龙德省利希恩东北15km的一个小城Coutras东北几公里处。开展了野外汽车能谱和地球化学找矿、矿点研究、野外填图等。得出初步结果后,于1976年12月建立了北阿基坦找矿组,开始了控制矿床的工作。 1977年,在波尔多-Tonneins-贝日腊克-夏累四边形范围内进行地表测量和疏散网格的钻探工作。结果表明,Coutras找铀区东南边部的Dronne河和Isle河之间的地区有远景,在这些地区进行系统网格无岩芯钻探、加密用800、400、200、100m网格,并对有利地段靠近地表的矿化点上进行钻探,然后逐渐推向东南部。初期共打900个钻孔,总进尺为
In 1974, the northern part of the Aquitaine began to find uranium in the wild. A number of geochemical anomalies and mineralization were discovered, especially a few kilometers north-east of Coutras, a small town 15 km northeast of Lethin, in the north of Dronne. Field car spectrum and geochemical prospecting, mine research, field mapping and so on. After drawing initial results, the North Aquitaine prospecting group was established in December 1976 and control of the deposit began. In 1977, surface surveys and evacuation grid drilling were carried out within the Bordeaux-Tonneins-Belaki-Tetrapot quadrangle. The results show that Coutras has a long-term view of the area between the Dronne River and the Isle River in the southeastern edge of the uranium area, where systematic gridless core drilling with 800, 400, 200, 100m grids is used for encryption, Drilling near the surface mineralization point, and then gradually pushed to the southeast. The initial total of 900 drilling holes, the total footage