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105 samples matching your criteria
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Sample n°12102 : sample with green-yellow tabular parsonsite crystalsMinerals: PARSONSITE CHALCEDONY (quartz) META-AUTUNITE METATORBERNITEYear: 1969Country: France
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Sample n°12105 : sample with well-developed metatorbernite crystalsMinerals: METATORBERNITE CHALCEDONY (quartz) META-AUTUNITE PYRITEYear: 1969Country: France
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Sample n°12108 : sample with pseudomalachite as green nodules and as small crystals on nodules, white chalcedony (radioactive sample)Minerals: PSEUDOMALACHITE CHALCEDONY (quartz)Year: 1969Country: France
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Sample n°12109 : sample with yellow parsonsite crystals, brown powdery hollandite nodules, green chalcedony, dendritic black oxidesMinerals: HOLLANDITE PARSONSITE CHALCEDONY (quartz) META-AUTUNITEYear: 1969Country: France
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Sample n°12111 : scattered crystals on rock substrateMinerals: META-AUTUNITE CHALCEDONY (quartz) HEMATITE METATORBERNITEYear: 1969Country: France
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Sample n°12112 : uraniferous block with globular white chalcedony coatingMinerals: CHALCEDONY (quartz) META-AUTUNITE METATORBERNITEYear: 1969Country: France
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Sample n°12495 : brown block with conchoidal fractures (8 cm)Minerals: CHALCEDONY (quartz)Year: 1970Country: Rwanda
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Sample n°12546 : banded fragmentsMinerals: CHALCEDONY (quartz)Year: 1921Country: Angola
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Sample n°12597 : banded grey-white and pink-white blocks (8 and 15 cm)Minerals: CHALCEDONY (quartz)Year: 1971Country: Burundi
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Sample n°12901 : reworked materialMinerals: CHALCEDONY (quartz) QUARTZYear: 1972Country: Nigeria