摘要
本文通过归纳索伦山地区菱镁矿矿床地质特征,探讨了索伦山地区菱镁矿矿床成因,在此基础上,分析与评价了在索伦山地区菱镁矿找矿前景。索伦山地区菱镁矿产于索伦山蛇绿岩之地幔橄榄岩内,受岩体内部微小构造控制,矿体贫富受风化程度制约,矿体成因是超基性岩风化淋滤形成菱镁矿,具体来说是水-岩石反应。菱镁矿与超基性岩硅质风化壳在成因上具有耦合关系,上部为风化淋滤残留物-超基性岩硅质风化壳,下部为风化淋滤的产物——菱镁矿。索伦山地区含菱镁矿之地幔橄榄岩岩体巨大,深部矿体众多,与国内西藏巴夏式中型菱镁矿在矿床成因上相一致。所以,索伦山地区具有较好的菱镁矿找矿前景。
In the thesis,sum up of basic geological characteristics of the magnesite deposit from Solonker area,discuss the genesis of the magnesite deposits from Solonker area,on that basis,analysing and evaluating the magnesite-search prospect in the Solonker area.The magnesite from the Solonker area distribute in mantle peridotite of the ophiolites in Solonker area,and are contraled by rock mass leptoclase.Mineralization enrichment was constrained by rock mass weathering intensity.The magnesite orebody genesis is untrabasic rock weathering-infiltration,in general,it is the result of water-rock interaction.There is couple relation on their genesis of the magnesite and untrabasic rock silicic weathering crust,the upper is weathering-infiltration restite,untrabasic rock silicic weathering crust;the under is weathering-infiltration product,the magnesite orebody.The size of magnesite-bearing mantle peridotite rock mass is huge,there are too many orebodys in the rock mass,and deposit genesis of the Solonker magnesite is in accord with the Baxia medium size magnesite.So,there is larger and more favorable magnesite prospecting potential in the Solonker area.
出处
《中国矿业》
北大核心
2017年第S1期261-266,272,共7页
China Mining Magazine
基金
中国地质调查局区域地质矿产调查项目资助(编号:12120113071800)
关键词
菱镁矿
矿床成因
找矿前景
水-岩石反应
风化淋滤
magnesite
deposit genesis
ore-search prospect
water-rock interaction
weathering-infiltratio
