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42 samples matching your criteria
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Sample n°9607 : black tourmalinite block (20 cm) in greisenMinerals: SCHORLYear:Country: Rwanda
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Sample n°9651 : altered black prismatic crystals in saccharoidal quartz (12 cm)Minerals: SCHORL QUARTZYear: 1962Country: Rwanda
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Sample n°9665 : black prismatic crystal (1-3 cm) in quartzMinerals: SCHORL MUSCOVITEYear:Country: Rwanda
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Sample n°9668 : black crystals (2 cm) in quartzMinerals: SCHORL QUARTZYear:Country: Rwanda
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Sample n°9880 : dark blue veined mass (10 cm)Minerals: SCHORLYear:Country: Congo (RDC)
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Sample n°10267 : aggregates of bright black prismatic crystals (4 cm)Minerals: SCHORLYear: 1963Country: Rwanda
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Sample n°10392 : black prismatic crystals (1-3 cm)Minerals: SCHORLYear:Country: Rwanda
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Sample n°10421 : black prismatic crystals (2-4 cm)Minerals: SCHORLYear:Country: Rwanda
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Sample n°10481 : black prismatic crystals (1 and 3 cm)Minerals: SCHORLYear:Country: Rwanda
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Sample n°10686 : tourmalinite fragment (16 cm)Minerals: SCHORLYear:Country: Rwanda