【摘要】 <正> 锰结核,这一巨大的潜在的矿产资源,广泛分布于世界海洋和湖泊的底部。过去,一般认为富含镍、铜、钴、锰等多金属元素的锰结核只有深海才有。近年来通过大量调查研究,发现多金属结核不仅深海有,浅海有(如南海北部湾),淡水湖泊中也有(如雷州半岛田洋火山口湖、江苏省洪泽湖),而且化学成分、结构、成因各不相同,故对锰结核的概念发生了根本性的转变。国外研究结果(Oceanus,Vol.25,No.3.)与我们所得结论是一致的。早在二千年前瑞典的采矿史上就有人开采“沼铁矿”、“湖铁矿”,其实就是开采湖相锰结更多还原

【Abstract】 Manganese nodules as a mineral resource of worldwide attraction are being studied in many countries.In recent investigation and research,we have found some shallow-sea facies ferromanganese nodules in the Beibu Gulf,and some fresh-water lacustrine facies ones in the Hongze Lake,Jiangsu Province.Their chemical composition,texture and origin are different from those of the deep-sea manganese nodules.This paper first reports the characteristics of the shallow-sea facies ferromanganese nodules of the Beibu Gulf,and discusses their occurrence,shape,texture,mineral composition,chemical composition and origin.更多还原