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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Aegirine with orthoclase
Basalt drill core
Basalt drill core
Basalt drill core
Corundum (var. sapphire)
Fluorite
Kyanite with biotite
Labradorite (var. rainbow moonstone)
Limestone with chert
Nifontovite
Olivine-basalt drill core
Opal
Opal bone
Pentahydroborite
Peridotite xenoliths in basalt
Quartz (var. amethyst)
Quinn Canyon
Roebling Opal
Sandstone
Stibnite
Topaz Gems
Weston
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