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3 samples matching your criteria
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Sample n°11016 : black oreMinerals: MANGANESE OXIDESYear: 1966Country: South Africa
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Sample n°11017 : black oreMinerals: MANGANESE OXIDESYear: 1966Country: South Africa
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Sample n°18472 : massive oreMinerals: MANGANESE OXIDESYear: 2017Country: South Africa