灵乡小包山矿床花斑状矿石特征及其形成机理分析  

THE CHARACTER AND AN ANALYSIS OF THE FORMATION OF THE GRANOPHYRIC ORE IN XIAOBAOSHAN DEPOSIT, LINGXIANG

作　　者：郭大招[1] 林小莹[1] 董建国[2] 

机构地区：[1]中国地质大学研究生院,湖北武汉430074 [2]大庆油田有限责任公司,黑龙江大庆163511

出　　处：《资源环境与工程》2004年第4期17-21,共5页Resources Environment & Engineering

摘　　要：小包山矿床位于灵乡铁矿田中矿带,花斑状矿石在本区非常发育。花斑状矿石可分为两大类,六个亚类,主要由磁铁矿、赤铁矿、菱铁矿、黄铁矿等金属矿物及方解石、白云石等碳酸盐矿物和绿泥石、石英等非金属矿物组成。不同类型的花斑状矿石成因不同。以黄铁矿和磁铁矿为主的花斑状矿石,乃矿浆贯入成因;赤铁矿-碳酸盐-磁铁矿矿石,主要是接触交代成因;呈角砾状的似花斑状矿石,则是由于构造活动,破碎成角砾状,被其他物质胶结而成。小包山矿床的东段和西段分别发育了不同类型的花斑状矿石,反映了矿床东段属矿浆贯入成因,而西段主要属接触交代的成因。The Xiaobaoshan deposit lies on the middle zone of the Lingxiang ore field, and the grannophyric ores are well developed here. The grannophyric ores can be divided into two types, six subtypes, are mainly composed of some metallic minerals (magnetite、 hematite 、 siderite、 pyrite etc) and some nonmetallic minerals (calcite、 dolomite、 chlorite、quartz etc). Different types of grannophyric ores have different origin. The origin of the grannophyric ores which are mostly composed of pyrite and magnetite is mineral injection; the hematite - carbonate - magnetite ore is of contact metasomatic origin; the ataxitic grannophyric - like ores which are broken into breccia are cemented by other materials. Different types of grannophyric ores are developed in east part and west part of Xiaobaoshan deposit , it shows that the east part is of mineral injection origin, while the west part is mainly of contact metasomatic origin.

关 键 词：矿石特征 成因机理 小包山矿床 花斑状矿石 

分 类 号：P611[天文地球—矿床学]