河南省沁阳行口铁矿地质特征

Geological characteristics of Xingkou iron deposit in Qinyang,Henan province

行口铁矿位于沁阳市北部太行山山脚下，是上世纪80年代发现的一个中型贫磁铁矿床。矿体成群出现，延长900～1200m，宽度变化70～290m，厚度变化5～270m；呈似层状、透镜状，控制延深700m，有用矿物主要为磁铁矿和赤铁矿。矿体的品位在走向上和倾向上基本稳定，矿石化学成分和矿物组成简单，有害物质含量低，矿体群中夹层较多，属于火山沉积变质铁矿床。

Located in the north of Qinyang city and on the foot of Mt. Taihang, Xingkou iron deposit is a middle-scale low-grade magnetite deposit found in 1980s. The ore bodies appear in groups, with length of 900 to 1200 m, width of 70 to 290 m and thickness of 5 to 270 m. The ores are present in the form of stratification or lentoid and their controlled depth is 700 In. The useful minerals are mainly magnetite and hematite. The grade of ores is steady in strike and dip of ore bodies, the chemical composition and mineral assemblage are simple, with few of harmful constituents and high ratio of horse-rocks. All these indicate that the ore deposit belongs to a sedimentary-metamorphic type.