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The P deposit is in Lower Cambrian Yuhucun Formation nor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">( nor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">∈1ynor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-font-family: calibri; mso-hansi-theme-font: minor-latin">). The thin, laminated P silt- stone, phosphorite, with intercalation of purple, grey - black muddy sihstone, with flat bedding as a plate. It shows the clear feature of stratabound ore deposit, the evolution from tidal high energy to subtidal energy.