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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Attaway Ametrine
Augen gneiss block
Basalt drill core
Basalt drill core
Basalt drill core
Basaltic cinder
Bismuth
Diaspore
Diaspore
Dyber Ametrine
Hemimorphite
Johnstown
Kyanite
Kyanite
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Olivine-basalt drill core
Paravauxite
Peridotite xenoliths in basalt
Phosphophyllite
Quartz (var. agate)
Quartz (var. ametrine)
Quartz (var. smoky quartz) with microcline
Quartz Gems
Rhodochrosite
Southwest Sunset
Vivianite with pyrite
Zircon (var. cyrtolite)
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