辽宁于家地区赤铁矿地质特征及找矿方向

Geological Characteristics and Prospecting Direction of Hematite in Yujia Area,Liaoning

通过物化探测量、槽探工程和实验测试等多种手段对于家地区赤铁矿体进行综合研究。在大致查明区内成矿地质条件的基础上,于地表发现了赤铁矿体3条,赋存于南芬组泥灰岩中,严格受层位控制。矿石类型为赤铁矿,矿石结构为粒状板条状结构,矿石构造主要为条带状、块状构造。矿体长度为120~180 m,厚度为0.52~2.82 m,延伸约25 m,矿石品位TFe23.61%~63.92%,矿床成因属于浅海相沉积型赤铁矿。结合地球物理和地球化学异常,指出了找矿方向,对进一步开展区内赤铁矿勘查工作具有一定的参考价值,有望实现区域深、边部找矿突破。

Comprehensive research has been conducted on the hematite ore body in the Yujia district through various methods such as physical and chemical detection,trenching engineering and experimental testing.On the basis of roughly ascertaining the geological conditions of the mineralization in the area,three hematite ore bodies were discovered on the surface,which occurred in the marl of the Nanfen Formation and were strictly controlled by the strata.The type of ore is hematite,which belongs to the granular lath structure,and the structure is mainly strip and block structure.The length of the ore body is 120 to 180 m,the thickness is 0.52 to 2.82 m,and the extension is about 25 m.The ore grade is TFe 23.61%to 63.92%.The genesis of the deposit belongs to neritic sedimentary hematite.Combining the geophysical and geochemical anomalies,the prospecting guideline is pointed out,which has certain reference value for the further development of hematite exploration in the region,and it is expected to achieve a breakthrough in prospecting in the deep and edge of the region.