辽宁本溪大台沟铁矿地质特征

Geological characteristics of the Dataigou iron deposit in Benxi,Liaoning Province

本溪大台沟铁矿床位于本溪市桥头镇,是近年来发现的最大的鞍山式铁矿床。该矿床为隐伏的超大型铁矿床,埋深1100～1200m,已控制矿体延长2000m,最大延深840m,最宽处1100m。矿体总体为近直立的厚板状体,夹石很少,为单一矿体。矿石类型为磁铁石英岩(磁铁矿石)、赤铁石英岩(赤铁矿石)及其过渡类型的磁铁赤铁石英岩(混合矿石)。矿石品位较均匀,矿床有害杂质含量低。初步估算333+332类资源量约34亿t。

Located in Shiqiao of Benxi City,the Dataigou iron deposit is the largest Anshan-type iron deposit discovered in recent years.The ore deposit is a concealed superlarge iron ore deposit 1100-1200 m in depth.The ore body extends for 2000 m,the maximum deep extension is 840 m,and the lateral width can reach 1100 m.The ore body is a nearly vertical singular tabular body,with very few horse intercalations.Ore types include magnetite-quartzite ore（magnetite）,hematite quartzite（red iron ore） and transitional type magnet hematite quartzite（mixed ore）.Ore grade is uniform,with low content of harmful impurities.The resource kind 333 ＋ 332 is preliminarily estimated to be about 3 billion tons.