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180 samples matching your criteria
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Sample n°2670 : geode with fibro-radial nodules (1 cm)Minerals: PLANCHEITE CALCITEYear: 1923Country: Congo (RDC)
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Sample n°2671 : fine pale blue and dark blue nodulesMinerals: PLANCHEITE SHATTUCKITEYear: 1923Country: Congo (RDC)
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Sample n°2672 : crystals (1 cm)Minerals: DIOPTASE CALCITEYear: 1923Country: Congo (RDC)
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Sample n°2673 : compact crystals (1 cm)Minerals: DIOPTASE CALCITE CHRYSOCOLLAYear: 1923Country: Congo (RDC)
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Sample n°2674 : twinned crystalsMinerals: DIOPTASE CALCITE CHRYSOCOLLAYear: 1923Country: Congo (RDC)
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Sample n°2675 : crystals (0.5 cm) on iron-rich rockMinerals: DIOPTASEYear: 1923Country: Congo (RDC)
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Sample n°2676 : various types of pseudomorphism after calcite scalenohedraMinerals: DIOPTASE PLANCHEITE SHATTUCKITEYear: 1923Country: Congo (RDC)
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Sample n°2677 : parallel fibresMinerals: AZURITE MALACHITEYear: 1923Country: Congo (RDC)
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Sample n°3145 : broken crystalsMinerals: DIOPTASEYear: 1952Country: Congo (RDC)
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Sample n°3162 : translucent rhombohedral calcite crystal (10 cm)Minerals: CALCITE KATANGITE (plancheite)Year: 1952Country: Congo (RDC)