Geological Characteristics And The Application Of Comprehensive Exploration Methods In Xiaonanhai Gypsum Deposit

Xiaonaihai area, Anyang is to the south east of prospecting area of limestone and evaporate deposition mineral in Caishang-Xiaonanhai area, which has excellent geological background. According to the petrographic analysis of ancient geography, North China Ordovician repeatedly appear on the tide evaporation environment; it sometimes can be on the intertidal or intertidal zone at other times, so it can form a multilayer depositions which contain gypsum. The No.1, 3, 4, 7 sections brecciated limestone of Majiagou group is salt dissolved Breccia stone. The gypsum pseudomorphic is hosted in brecciated limestone, which is of different sizes, it can be square, round, plate, needle and grid-like. After washout filter, it can form residual structure; below the deep dive surface, there is gypsum mine.After summing up the experience and lessons of gypsum mine exploration in the adjacent mining area, through using geological mapping method, comprehensive geochemical, geological drilling and chemical analysis, we effectively identified the stratigraphy, structure, seam, ore characteristics within the segment. Through the dynamic analysis of halogen element,such as F, Cl, Br and l. We concluded that salt mining basin is in the east and southeast, so in the southern, eastern and northern of the mining area, we circle seven comprehensive exception. After drilling verification, a large gypsum mine appear, the prospecting effect is ideal.Soil profile, rock geochemical profile can guide the exploration of blind orebodies; chemical analysis and geological drilling can validate the geochemical results; Integrated exploration is obvious, of which the results is valid and reliable.