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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Albite (var. moonstone)
Amazonite
Andalusite with quartz, muscovite, and biotite
Apophyllite with prehnite
Arkose
Augen gneiss block
Basaltic cinder
Beryl
Beryl (var. heliodor)
Bununu
Corundum (var. sapphire)
Dolerite
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Estherville meteorite
Hemimorphite
Homestead
Johnstown
Kyanite after andalusite
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Nautilus Tourmaline Pendant
Nigerian tourmalines
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Stalagmite
Staunton
Zagami
Zircon (var. cyrtolite)
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