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江西东乡铜矿层间溶蚀残积堆积物的特征及成因
引用本文:闫志为,张俊峰,黄苏锦,王辉镜.江西东乡铜矿层间溶蚀残积堆积物的特征及成因[J].中国岩溶,2007,26(2):126-131.
作者姓名:闫志为  张俊峰  黄苏锦  王辉镜
作者单位:1. 桂林工学院资源与环境工程系,广西,桂林,541004
2. 江西铜业集团公司东同矿业有限责任公司,江西,东乡,331812
摘    要:对存在于赣东北东乡铜矿地层中的一种被当地称为Kcd的金属矿岩溶堆积形态的特征和成因进行了研究。Kcd是一种层间松散堆积物,呈带状分布于金属硫化矿体附近。岩性主要为铁锰质含量高的中、细砂、粉土、粉质粘土等,富含碎石和块石,局部为泥砾、泥砂混合物,性状松散、饱水、色杂。根据岩性、产出形态和现代矿区水文地质条件分析,认为Kcd应是白云岩围岩在硫化矿物氧化带硫酸水作用下产生的白云岩粉(砂)和围岩崩落的碎石、块石,以及由水流携带的粘性土共同堆积而形成的一种沉积形态,并且现在仍在发生和发展中。它是一种金属矿岩溶堆积形态的新类型。Kcd常形成井下突泥,给矿山施工带来极大危害。

关 键 词:东乡铜矿  金属矿岩溶新类型  层间堆积物  特征  成因
文章编号:1001-4810(2007)02-0126-06
收稿时间:2006-11-24
修稿时间:2006-11-24

Character and origin of eluvial deposits between the copper ore layers at Dongxiang mining area
YAN Zhi-wei,ZHANG Jun-feng,HUANG Su-jin and WANG Hui-jing.Character and origin of eluvial deposits between the copper ore layers at Dongxiang mining area[J].Carsologica Sinica,2007,26(2):126-131.
Authors:YAN Zhi-wei  ZHANG Jun-feng  HUANG Su-jin and WANG Hui-jing
Institution:1. Department of Resource and Environmental Engineering, Guilin University of Technology, Guilin , Guangxi 541004, China; 2. Jiangxi Copper Corporation Dongtong Mining Ltd. , Dongxiang, Jiangxi 331812, China
Abstract:The features and origin of a kind of metal ore formed by karst accumulation is studied. This ore, called Kcd by local people, distributes in the copper-contained layers at Dongxiang copper mine in northeast Jiangxi province, China. It is a kind of loose interlayer deposit. The Kcd exists on the periphery of the metal sulfide ore body in banded form. Lithologically, Kcd is a mixture of sand, silt and silty clay with high Fe and Mn components, and contains lots of rock blocks and little mud gravel and mud sand in some part. Loose, water saturated and varicolored are the major features of the Kcd mixture. According to lithology, occurrence and hydrogeological conditions of the mine today it is believed that the Kcd is a deposit formed by dolomite silty sand coming from the surrounding dolomite and rock blocks from the red layer K2n as well as clay from water flow, and the deposition process is still in progress. It is a new kind of metal ore karst depositing shape. The water-saturated Kcd often makes slush-like and threatens mining critically.
Keywords:Dongxiang copper mine  Metal ore new karst type  Interlayer deposition  Character  Origin  
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