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1829 book - An introduction to the study of mineralogy ; or, student's pocket companion (IA AnIntroductionToTheStudyOfMineralogy) (page 2 crop).jpg....
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com/photos/jsjgeology/32412591730/ operator: Flickr URL: https://live.staticflickr.com/2217/32412591730_a4673c23e1_o.jpg determination method: SHA-1...
com/photos/jsjgeology/32792518995/ operator: Flickr URL: https://live.staticflickr.com/2152/32792518995_798e5f0d67_o.jpg determination method: SHA-1...
DescriptionAmethyst (Uruguay) 3 (32639224652).jpg Amethyst (= purple quartz) from Uruguay. (public display, Carnegie Museum of Natural History, Pittsburgh...
DescriptionAmethyst (Brazil) 5 (32669603961).jpg Amethyst (= purple quartz) from Brazil. (public display, Carnegie Museum of Natural History, Pittsburgh...
DescriptionAmethyst (Brazil) 8 (32669603001).jpg Amethyst (= purple quartz) from Brazil. (public display, Carnegie Museum of Natural History, Pittsburgh...
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