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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Amphibole-rock
Arkose
Augen gneiss block
Basaltic cinder
Beryl
Beryl (var. heliodor)
Bununu
Calcite
Corundum (var. sapphire)
Elbaite
Elbaite
Elbaite
Elbaite (var. rubellite)
Estherville meteorite
Fluorites
Garnetiferous schist
Granite block
Hemimorphite
Homestead
Johnstown
Manganoan calcite
Marble with wollastonite
Microcline
Microcline (var. amazonite)
Migmatite
Millerite
Millerite with hematite and quartz
Nautilus Tourmaline Pendant
Nigerian tourmalines
Peekskill
Pegmatite
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Zagami
Zircon (var. cyrtolite)
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