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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Bismuth
Bismuthinite
Calcite in betekhtinite
Cornetite
Creedite with pyrite
Ethiopian Opals
Georgina Emerald
Malachite
Malachite slab
Metatorbernite
Paravauxite
Vivianite with pyrite
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