This is one of the world's largest copper deposits, stretching from Zambia to the Democratic Republic of the Congo in southern Africa, approximately 500 km long and 80 km wide. The copper produced here has made the two countries major copper producers, alongside Canada, after the United States, Russia, and Chile, and it is estimated that they contain 12% of the world's onshore copper resources. Cobalt, which is recovered as a by-product, is also important, and the two countries produce nearly 70% of the world's cobalt. The deposits are layered deposits in sandstone and shale from the late Proterozoic era, and the copper content is usually 3-5%, sometimes reaching 15% or more. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
アフリカ南部のザンビアからコンゴ民主共和国にかけて連続する,長さ約500km,幅約80kmの世界有数の銅鉱床地帯。ここから生産される銅により,両国はアメリカ,ロシア,チリに次ぎ,カナダと並ぶ主要産銅国となっており,世界の陸上銅資源の12%を埋蔵していると推定されている。副産物として回収されるコバルトも重要で,両国で世界の70%近くのコバルトを生産している。鉱床は原生代後期の砂岩やケツ岩中の層状の鉱床で,銅品位はふつう3~5%,時に15%以上に達する。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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