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海州式磷矿床属沉积变质矿床，中元古代海州群锦屏组、肥东群双山组、宿松群柳坪组和虎踏石组及红安群七角山组等为赋矿岩层。在沉积阶段，磷块岩的沉积严格受岩相吉地理控制。磷块岩沉积在浅海相区台地相边缘的浅滩之中。
The Haizhou-type phosphorite deposit is a sedimentary metamorphic deposit. The Mesoproterozoic Haizhou Group Jinping Formation, Feidong Group Shuangshan Formation, the Susong Group Qunping Formation and Hu Tapa Formation and the Hongan Group Qiajiao Mountain Formation, Rock formation. Phosphorite deposition is strictly controlled by lithofacies during the depositional phase. Phosphorite is deposited in shallows at the margin of the platform of the shallow marine facies.