摘要
世界上含金镁夕卡岩矿床十分罕见。本文简单介绍了安徽淮北三铺地区含金多金属镁夕卡岩矿床的成矿基本地质条件、矿床富镁特征和交代矿化蚀变分带模式。重点研究锶、钡元素在矿床中的迁移规律以及锶/钡比值的分带性,在研究大量分析数据的基础上,分析Sr、Ba分别追随Ca、K元素迁移方向,发现Ba元素由内带向外带迁移、Sr元素由外带向内带的逆向迁移规律,首次指出该镁夕卡岩矿床中的Sr/Ba比值的分带性,确定出Sr/Ba比值0.3～3.0为矿(体)化交代蚀变带,可作为镁夕卡岩型矿床重要的地化找矿标志。
Gold-bearing megnesium skarn deposit is very rare in the world. This paper briefly introduced basic ore-forming geological conditions, megnesium-abundance features and metasomatic mineralization alteration zoning model of the gold-bearing polymetallic megnesium skarn deposit in the Sanpu area, Huaibei, Anhui, focused on study of the migration law of Sr and Ba elements and Sr/Ba ratio zoning in the deposit, on the basis of study of a great amount of analytical data, discussed Sr and Ba migrating with Ca and K respectively, discovered Ba migrating from inner zone to outer and Sr in the contrary, firstly pointed out the Sr/Ba ratio zoning of the megnesium skarn deposit, determined Sr/Ba ratio 0.3-3.0 to be mineralizaion metamatic alteration zone, which can be a significant geochemical ore-prospecting indicator for megnesium skarn deposit.
出处
《安徽地质》
2009年第2期103-106,共4页
Geology of Anhui
基金
原地矿部"八五"科研项目<安徽省濉溪县三铺地区铁铜(金)成矿地质条件及找矿方向>的部分成果
