摘要
下沟铁矿位于中朝准地台鲁西断隆东部边缘,沂沭断裂带西侧,为一中型鞍山式铁矿床。矿体赋存于泰山岩群雁翎关岩组变质岩系中,该组为一套基性-超基性海底火山喷发沉积建造。矿体分布面积0.27km2,走向长225-1 240m,最大控制斜深422m,TFe平均品位35.49%,品位变化均匀,矿体由多个带状矿层组成,后期岩体侵入分割成3个矿段。矿石自然类型为细粒条带状磁铁石英角闪岩型,矿石铁品位较高,具有较大的经济价值和科研价值。
Xiagou iron deposit is located in eastern edge of Sino Korean paraplatform in Luxi uplift,and west part of Yishu fault zone.It is a medium sized Anshan type iron deposit.The ore bodies occurred in metamorphic rocks of Yanlingguan formation in Taishan group.It is a set of basic ultrabasic submarine volcano sedimentary formation.Distribution square of ore bodies is 0.27km2 ,the length is 225 -1240m, the maximum oblique depth is 422m,average grade of TFe is 35.49%,and grade changes uniformly.Ore bodies are composed of some banded layers.Intrusive rocks in late period can be divided into 3 ore sec-tions.Natural types of ore bodies are fine banded magnetite quartz amphibolite type.Ore grade is rather high with great economic value and scientific research value.
出处
《山东国土资源》
2015年第4期22-27,共6页
Shandong Land and Resources
关键词
鞍山式铁矿
成因类型
找矿方向
沂源下沟
Anshan type iron deposit
genetic type
ore prospecting direction
Xiagou in Yiyuan count y
