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14 samples matching your criteria
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Sample n°11279 : iridescent material in septaria (10 cm)Minerals: MARCASITEYear: 1967Country: Belgium
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Sample n°11345 : fibro-radial nodules, partly elongated, isolated or in chalk matrixMinerals: MARCASITEYear: 1967Country: France
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Sample n°13693 : thick coarse-crystalline crustMinerals: MARCASITEYear:Country: Spain
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Sample n°19885 : tabular crystalsMinerals: MARCASITEYear: 2022Country: USA