南宁球粘土地质特征及矿床成因  

GEOLOGICAL CHARACTERISTICS AND GENESIS OF BALL CLAY, NANNING, GUANGXI PROVINCE IN CHINA

作　　者：刘长龄[1] 李生才 刘钦甫[3] 

机构地区：[1]天津地质研究院,天津300061 [2]广西扶绥昌平建材原料厂,广西扶绥532100 [3]中国矿业大学北京校区资源开发工程系,北京100083

出　　处：《地质找矿论丛》2002年第4期246-251,共6页Contributions to Geology and Mineral Resources Research

基　　金：国家自然科学基金项目(批准号:49802010);教育部高等学校优秀青年教师教学科研奖励基金联合资助。

摘　　要：　广西南宁市郊区维罗矿区的球粘土产于新生代第四纪的更新统(Q3),曾由广西第四地质队详查证实为一大型矿床(探明储量数千万吨),被定为高岭土矿床或耐火粘土矿床,或为其变种。认为其质量好而规模大且便于露天开采。球粘土主要由无序高岭石组成,其矿床成因系由火山岩经风化残积及部分热液而成的原生高岭土再经受水流冲刷剥蚀长距离搬运磨蚀而沉积于维罗等湖沼中。其中相当一部分高岭石在透射电镜下呈六角片状外形,系自生的胶体化学沉积,属于生物成矿的结果;而整体成因应属于碎屑-胶体混合沉积的球粘土矿床。Weiluo ball clay deposit at the suburbs of Nanning municipality occurs in Pleistocene Series of Quaternary (Q3) System . Detail exploration by Guangxi No.4 Geological team proved it a large size deposit. According to the preSoviet Union specification it was defined as a high quality kaolinite or refractory clay deposit, or their variant suitable to open mining. In recent years the authors carried researches on the deposit. The ore mainly consists of disordered kaolinite.Genetically, weathering of volcanics formed residual deposit that was exposed to hydrothermal fluid and the primary kaolinte occurred. Then the residual deposit was eroded and the kaolinte was transported with water and abraded in long distance to Weiluo basin and deposited in the lake basin bogs. Under electronic transmission microscope a great deal kaolinite are in hexagonal form that is characteristic of biotic colloidal precipitation. Generally, it is a clasticcolloidal sedimentary ball clay deposit.

关 键 词：南宁球粘土 地质特征 矿床成因 广西 

分 类 号：P611[天文地球—矿床学] P619.23[天文地球—地质学]