新世纪以来非洲大陆主要矿产勘查新进展

    The new exploration progress of major mineral resources in Africa Continent since the 21st century

    • 摘要: 非洲大陆成矿地质条件优越,矿产资源丰富,勘查找矿潜力巨大,为我国境外矿业投资的热点地区之一,开展其新世纪以来主要矿产勘查进展研究,对深化该地区基础地质研究和指导中资企业在该地区进行矿业投资均具有重要意义。本文对非洲大陆主要矿产勘查进展的总体形势、勘查新发现重要矿床及其分布特征、勘查增量分布格局、取得勘查进展的主要矿床类型与成矿时代等进行了系统分析。研究结果表明:①新世纪以来非洲大陆金、铜、铁、铀、镍、锂、铝土矿等主要战略性矿产取得了重要勘查进展,尤其是金、铜取得勘查进展的矿床数量最多,勘查进展成效最为突出;②西非克拉通、刚果克拉通、卡拉哈里克拉通等重要多金属成矿带是勘查进展的主要贡献者;③金、铜、铁、铝土矿、铀、镍、锰、铬、锂等矿产取得重要勘查进展的矿床主要形成于前寒武纪;④造山型金矿、砂页岩型铜钴矿、BIF型铁矿、红土型铝土矿、铜镍硫化物型镍矿、伟晶岩型锂矿是对应矿产取得勘查进展的主要矿床类型;⑤与前寒武纪克拉通具有密切成因关系的金、铜、镍、铝土矿、铁等矿产是该地区今后勘查找矿的主攻矿种。未来,中国宜重点与西部非洲和中部非洲加强矿产勘查开发合作,前者以造山型金矿、红土型铝土矿和BIF型铁矿为重点,后者以中非铜钴矿带砂页岩型铜钴矿为重点。

       

      Abstract: The Africa Continent with superior ore-forming geological conditions is abundant in mineral resources and has great prospecting potential. Africa Continent is an important area for Chinese enterprises overseas mining industry investment. The study on the new exploration progress of major mineral in Africa Continent has important significance for deepening the basic geological research and is conducive to Chinese enterprises to carry out mining investment in Africa Continent since the 21st century. Based on the study of the overall situation, distribution characteristics of newly discovered important deposits, the distribution pattern of the increases in reserves and resources and the main deposit types & metallogenic epoch of deposits of the major mineral resources which have made important exploration progress in Africa Continent. The results show that: ①the major strategic mineral resources in Africa Continent, such as gold, copper, iron, uranium, nickel, lithium and bauxite, have made important exploration progress since the 21st century. Gold and copper deposits have made the biggest exploration progress among all kinds of mineral resources in Africa Continent. ②The important polymetallic metallogenic belts such as the West Africa Craton, Congo Craton and Kalahari Craton are the main contributors of exploration progress of major mineral resources in Africa Continent. ③The mineral deposits that have made significant exploration progress in gold, copper, iron, bauxite, uranium, nickel, manganese, chromium, lithium are mainly formed in Precambrian. ④Orogenic-type gold deposit, sandstone-shale-hosted copper ( cobalt ) deposit, BIF-type iron deposit, laterite bauxite deposit, copper-nickel sulfide-type nickel deposit, and pegmatite-type lithium deposit are the main deposits types which have made important exploration progress. ⑤Mineral resources such as gold, copper, nickel, bauxite, and iron, which are closely related to the Precambrian Craton, will be the main focus of exploration and prospecting in the region in the future. In the future, China should strengthen mineral resources exploration and development cooperation with Western Africa and Central Africa. The orogenic-type gold deposits, laterite bauxite deposits and BIF-type iron deposits are the important targets for Chinese enterprises mining investment in Western Africa. The shale-hosted copper (cobalt) deposits in Central African copper-cobalt metallogenic belt are the important targets for Chinese enterprises mining investment in Central Africa.

       

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