Qinghai Xitiesan Mine The Middle Of Coal Mine Section Geological Features And Ore Prospects

It mainly detailed researched on the geological characters of ore deposits in the middle ditch area of Xitieshan.And make the deep prospecting target forecast through geological, geochemistry and geophysical anomaly.The paper makes the detailed study on the ore-hosting horizon and ore-hosting construction.It detailed that the ore-hosting horizon mostly occurenced in the middle sedimentary rocks(O3tc) of the middle ditch area.And it hydrothermal sedimentary rocks grow especially well. According to the horizon from the bottom to the top, the paper points the types of hydrothermal sedimentary rocks in the mining area, can generally be divided into:breccia-siliceous rock-pyrite striation siliceous rock and dialogite rock-lamellar and striation sulphide ore. From the view of combination, it lacks of the typical combination of high temperature hydrothermal sediments such as k-feldspar rock, tourmaline rock and so on.As a whole, it belongs to the combination of low medium temperature hydrothermal sediments.And detailed researched on the carbonaceous schist type Pb-Zn ores of middle ditch area.It lie southeast of Xitieshan ditch area horizon and structural belt.And it occurenced in the middle sedimentary rocks(O3tc) of Tanjianshan group. Its horizon higher than the marble type ores.For study about drape character and mineral structure,we found that the inversion hydrothermal Vent-Flowing sedimentary structure in carbonaceous schist ores connect with the ore-bearing strata inversion in the middle ditch area. It composed by the rich and thick ore blet of network-layered. It's structure construction retains a large number of mineralization mark of exhalative hydrothermal sedimentation. So is a typical SEDEX deposit.Through geological, geochemistry features, physical geography features for the middle ditch(7-0351ine) a Comprehensive analysis of the discussion.And point out the I target area was the best prospecting target areas. It stand the middle of the sedimentary billabong,and in favor of hydrothermal venting-flowing and gathering. So,there is of great potential for prospecting.Evidence prospecting criteria ofⅡtarger area.Ⅲtarget area was the stretch direction of the mainly ores.And it worth while to develop much of work. The 07,03 and 1 lines drilling prove the correcting of the target area in the middle ditch area.And it direction for the next prospecting.