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中生代侏罗纪末至白垩纪,部分至于始新世这一地质时代的地层中,在摩洛哥中央部分达西部大西洋海岸的地区,分布着大量的磷矿层。具有代表性的矿床有卡萨布兰卡东南方的格里布卡,在其南方的优素菲尔·本·古利尔,再向南的希希阿瓦,还有萨哈拉西部的博克等四个地区。据报道,这些磷矿床中含U达70~230ppm。据法国Uranium PUK技术工作者的报告,摩洛哥磷矿
In the Mesozoic Jurassic to Cretaceous, and partly in the geological formations of the Eocene, a large number of phosphate rock formations are distributed in the central part of Morocco on the western Atlantic coast. The representative deposits are the four southern deposits of the Karibuka in the south-east of Casablanca, the Yusuf bin Ben Gurlir in the south, the Xishwais in the south and the Hakkas in the west of Sahara area. It is reported that these phosphate deposits contain up to 70 ~ 230ppm U. According to a report by the French Uranium PUK technologist, the phosphate rock in Morocco