非洲铬铁矿资源分布与找矿潜力

    Distribution and prospecting potential of chromite resource in Africa

    • 摘要: 铬是我国确定的战略性矿产,同时也是我国大宗紧缺矿种之一,对外依存度极高。全球超过一半的铬铁矿资源分布在非洲,南非、津巴布韦和马达加斯加是非洲最重要的铬铁矿资源国。非洲铬铁矿床主要有层状型和豆荚状型两种类型,前者集中分布在布什维尔德层状基性-超基性杂岩体和津巴布韦大岩墙内,后者在非洲南部和中北部的绿岩带内都有产出。本文综合成矿地质条件、资源分布特点、勘查开发现状等因素,划分出4个铬铁矿资源潜力区,并进行了初步的找矿潜力分析。

       

      Abstract: Chromium is a strategic mineral and one of major shortage minerals identified in China, its dependence on foreign countries is extremely high.More than half of the world's chromite resources are distributed in Africa, most of which are located in South Africa, Zimbabwe and Madagascar.The chromite deposits in Africa are mainly composed of two types, namely layered and podiform deposits.The former is concentrated in the Bushveld layered basic-ultrabasic complex in South Africa and the Great Dyke in Zimbabwe, and the latter is output in the greenstone belt in southern and north-central Africa.In this paper, according the factors such as metallogenic geological conditions,deposits distribution characteristics and situation of exploration, the authors identify four chromite resource prospecting potential areas in Africa.

       

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