山东国土资源
山東國土資源
산동국토자원
LAND AND RESOURCES IN SHANGDONG PROVINCE
2015年
4期
22-27
,共6页
鞍山式铁矿%成因类型%找矿方向%沂源下沟
鞍山式鐵礦%成因類型%找礦方嚮%沂源下溝
안산식철광%성인류형%조광방향%기원하구
Anshan type iron deposit%genetic type%ore prospecting direction%Xiagou in Yiyuan count y
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0．27 km2，走向长225～1240 m，最大控制斜深422 m，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。
下溝鐵礦位于中朝準地檯魯西斷隆東部邊緣，沂沭斷裂帶西側，為一中型鞍山式鐵礦床。礦體賦存于泰山巖群雁翎關巖組變質巖繫中，該組為一套基性超基性海底火山噴髮沉積建造。礦體分佈麵積0．27 km2，走嚮長225～1240 m，最大控製斜深422 m，TFe 平均品位35．49％，品位變化均勻，礦體由多箇帶狀礦層組成，後期巖體侵入分割成3箇礦段。礦石自然類型為細粒條帶狀磁鐵石英角閃巖型，礦石鐵品位較高，具有較大的經濟價值和科研價值。
하구철광위우중조준지태로서단륭동부변연，기술단렬대서측，위일중형안산식철광상。광체부존우태산암군안령관암조변질암계중，해조위일투기성초기성해저화산분발침적건조。광체분포면적0．27 km2，주향장225～1240 m，최대공제사심422 m，TFe 평균품위35．49％，품위변화균균，광체유다개대상광층조성，후기암체침입분할성3개광단。광석자연류형위세립조대상자철석영각섬암형，광석철품위교고，구유교대적경제개치화과연개치。
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.
