摘要
红土型镍矿是超基性岩受风化作用的产物,而矿体内因残留有原超基性岩的副矿物——铬铁矿、钛铬铁矿、钒钛铁矿、钛铁矿等,以及风化作用形成的赤铁矿、褐铁矿、硅酸镍矿、含钴的锂硬锰矿、钾硬锰矿等,使得矿石成为非常特征的富铁、铬、锰、镍、钴、钒“天然合金矿石”。更因其矿床规模巨大,埋藏浅,易于勘探与露天开采,已逐渐被规模化开发利用,成为重要的镍原料开采对象。本文以印尼北科纳威地区的矿床为例,试图对该类矿床的形成机理与找矿勘查方法作一些分析与总结。
The lateritic nickel deposit is the product of the weathering of ultrabasic rocks.In the ore body,there exist relict accessory minerals of the original ultrabasic rocks,such as chromite,titanochromite,vanadic ilmenite,and ilmenite,whereas weathering has formed minerals like hematite,limonite,nickel silicate,Co-bearing lithiophorite,and potash psilomelane.All these minerals have caused the ores to become vary characteristic“natural alloy ores”with abundant Fe,Cr,Ni,Co and V.In addition,as the ore deposits are characterized by large size,shallow burial and easy exploration and opencasting,they have been gradually explored and utilized in large scale and have become the important exploitation objects for nickel materials.Exemplified by nickel deposits in Konawe area of Indonesia,this paper has tentatively made an analysis and summarization of the formation mechanism and prospecting methods for this kind of ore deposits.
作者
高俊
彭留伟
刘传高
GAO Jun;PENG Liu-wei;LIU Chuan-gao(No.308 Geological Party,Yunnan Nonferrous Metals Geological Bureau,Gejiu,Yunnan 661000)
出处
《地球学报》
CAS
CSCD
北大核心
2013年第S01期229-234,共6页
Acta Geoscientica Sinica
关键词
找矿勘探方法
含镍风化壳
红土型镍矿
超基性岩
prospecting and exploration methods
Ni-bearing weathering crust
lateritic nickel deposit
ultrabasic rock
