Geological Characteristics and Genesis of Iron Deposit in Qingliangsi, Baofeng

Shanxi-typed medium-sized high-grade iron deposit is first discovered in Qingliangsi, Baofeng county, Henan province. The deposit is situated in the midpiece of the Mianchi-Queshan collapsed fold fault bundle, southern part of the North China Block. It belongs to the Mianchi-Queshan stratum minor region in the western Henan stratigraphic subregion of north China stratigraphic area. The ore serials are generated from Benxi formation of late Carboniferous. The iron deposit is relatively stable layered or stratum-like, which is from the lower part of Benxi formation. Without mix stone and the non-ore skylight, the deposit is simple in internal structure and thus belongs to a simple orebed type. The ores are naturally hematite, and the ore grade of w(TFe)is generally high between 27.50%-59.75%, with an average of 50.55%, while the samples with w(TFe)value higher than 50% take up 53% in total. The harmful elements containing in the mineral such as S,P are tiny. The major ore for industrial purpose are ironmaking iron ore, accounting for 66% of the resources;Taking up 34% of the whole, the minor iron ore are to be chosen upon necessity. Genesis of the deposit is a Shanxi-typed iron ore in detrital neritic facies chemical sediment. The high peneplaination degree and non-developed karst funnel in this region is beneficial to Shanxi-typed high-grade iron ore bed formation. In contrast, an area with lower peneplaination degree plus a developed karst funnel is in favour of forming the funnel-shaped bauxite deposit.