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111 samples matching your criteria
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Sample n°12662 : black wolframite coating, yellowish scorodite crustMinerals: SCORODITE WOLFRAMITE QUARTZ TOURMALINEYear: 1971Country: Congo (RDC)
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Sample n°12664 : massive black blockMinerals: WOLFRAMITEYear: 1971Country: Congo (RDC)
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Sample n°12665 : mixed metallic encrustation on iron-rich rockMinerals: WOLFRAMITE MONAZITE RUTILE TOURMALINEYear: 1971Country: Congo (RDC)
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Sample n°12667 : purplish black debris (2 cm)Minerals: WOLFRAMITEYear: 1971Country: Congo (RDC)
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Sample n°12671 : fragmented black tabular wolframite crystals, yellow granular topaz platesMinerals: TOPAZ WOLFRAMITE QUARTZYear: 1972Country: Congo (RDC)
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Sample n°12672 : massive black wolframite in quartzMinerals: WOLFRAMITEYear: 1971Country: Congo (RDC)
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Sample n°12675 : concentrate (2-20 mm)Minerals: WOLFRAMITEYear: 1971Country: Congo (RDC)
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Sample n°12681 : aggregate of bright plates (7 cm)Minerals: WOLFRAMITEYear: 1971Country: Congo (RDC)
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Sample n°12689 : massive black wolframite on quartzMinerals: WOLFRAMITEYear: 1971Country: Congo (RDC)
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Sample n°12695 : purplish black vesicular block (5 cm)Minerals: WOLFRAMITEYear: 1972Country: Congo (RDC)