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Ne elezn kovy a jejich slitiny II

2. med (Cu) je kov nacervenal barvyv prrode se nejcasteji vyskytuje vzna na sru, k n m velkou afinitu (chalkopyrit CuFeS2, bornit Cu3FeS3), prpadne na kyslk (napr. kuprit Cu2O). Rudy obsahujc med jsou pomerne chud, obsahuj 1 a 6 % Cu. Ryz med se ve vet mre nachz na Aljace,

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Ne elezn kovy a jejich slitiny II

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