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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Aegirine with orthoclase
Arkose
Augen gneiss block
Aurichalcite with hemimorphite
Basaltic cinder
Beryl
Calcite
Corundum (var. sapphire)
Hemimorphite
Johnstown
Labradorite (var. rainbow moonstone)
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Sandstone
Zircon (var. cyrtolite)
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