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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
African Gems
Arkose
Augen gneiss block
Basalt drill core
Basalt drill core
Basalt drill core
Basaltic cinder
Calcite
Elbaite
Elbaite
Estherville meteorite
Freedom Diamond
Grossular (var. tsavorite)
Grossular (var. tsavorite) and Elbaite
Hemimorphite
Homestead
Johnstown
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Olivine-basalt drill core
Peridotite xenoliths in basalt
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Smithsonite
Smithsonites
Zircon (var. cyrtolite)
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