济宁颜店铁矿地质特征及济宁岩群含矿性研究

Study on Geological Characteristics of Yandian Iron Deposit and Ore-bearing Property of Jining Group 〓in Jining City

摘要:

伏于济宁滋阳山一带千米盖层之下的古元古代济宁岩群是一套低绿片岩相变质含铁岩系，主要岩石组合为千枚岩、板岩、磁铁石英岩等，其原岩为海相含灰质泥岩、砂岩类中酸性火山岩、硅铁岩等，该套岩系最大控制厚度达580m。其中赋存的条带状磁铁石英岩呈层状、似层状埋深在1612.89~1796.54m之间，共有5层铁矿，总厚度85.53m。估算预测的铁矿资源量（334）9.76亿t，mFe平均品位22.37%；低品位矿体预测的资源量（334）2.64亿t，mFe平均品位16.99%。

Abstract:

Paleoproterozoic Jining group which occurred in 1000m underground in Ziyangshan area is a series of low greenschist phase metamorphic iron-bearing rocks. Its major rock combinations are phyllite, slate and metavolcanics. Its country rocks are marine phase lime mudstone, sandstone accompanying with medium-acid volanic rock and ferrocilicon rock. Its controlling depth is 580m. Belt type magnetic granites occurred in cellar and stratoid type with the depth of 1612.89~1796.54m. There are 5 strata iron deposits totally, and total depth is 85.53m. Estamited iron resource amount is 9.76 billion ton(334), average degree of mFe is 22.37%; resource amount with low degree (334) is 2.64 billion ton and average degree of mFe is 16.99%.