Characteristics of typical iron ore deposits and their metallogenic series in Qinghai Province

Most of the iron deposits(spots) in Qinghai belongs to the crystallization differentiation type deposit in mafic-super mafic ore forming system; crust-mantle type intermediate to acidic magma ore forming system;skarn type deposit;stratabound deposit in volcanic spout-sediment ore forming system;stratabound transformation type,transformed hydrothermal type,depositional metamorphic type in superimposed transformation ore forming system;stratabound deposit in depositional spout ore forming system;continental and sea facies depositional type in sedimentation ore forming system.It can be seen through the research on typical iron deposits in these ore forming series that many iron-polymetallic deposits(spots) all possess the ore forming geological conditions for large to gigantic ore deposits and mostly associated with copper,lead,zinc,gold and silver polymetallic deposits based on the geological environment analysis of the metallogenic structures.It is believed by the research that the comprehensive assessment of associated components should be paid attention to during the exploration process in future,as it is great significant to enlarge the deposit scale,upgrade the level of mineral resources comprehensive utilization and raise the technique and economic value of the iron deposits.