滇东的磷矿层(矿体)多赋存于下寒武统渔户村组中,一般有上下两层,间夹水云母粘土页岩,直接顶底板为含磷(砂质、硅质)白云岩。本区磷块岩自沉积以来,经历了漫长的地质历史,特别是中生代以来,多处于亚热带温湿气候条件下,近地表的矿层和露头广泛遭受风化,形成大量的风化矿石。由于风化矿石易于擦洗,较之原生矿石在采选及加工利用上 Phosphorite layers (orebodies) in eastern Yunnan often occur in the Lower Cambrian fishermen group, generally with upper and lower two layers of clayey clayey shale with direct top and bottom plates of phosphorous (sandy, siliceous Dolomites. Since the sedimentation, the phosphorites have undergone a long geological history, especially since the Mesozoic. They are mostly in the subtropical climate of warm and humid climate. The near-surface ore beds and outcrops are widely weathering and a large number of weathered ores are formed. Because weathered ore is easy to scrub, compared with primary ore in the mining and processing and utilization