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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Basalt drill core
Basalt drill core
Basalt drill core
Hubnerite with quartz
Olivine-basalt drill core
Opal
Peridotite xenoliths in basalt
Pitts
Rhodochrosite with quartz
Rhodonite
Tetrahedrite
Unusual Gems
Vanadinite with romanechite
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