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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Afghanite with calcite
Amphibole-rock
Arkose
Augen gneiss block
Basaltic cinder
Bastnäsite with quartz
Corundum (var. ruby)
Elbaites
Fluorite
Garnetiferous schist
Granite
Granite block
Havey Tourmaline
Hemimorphite
Johnstown
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Pegmatite
Picasso Kunzite Necklace
Pollucite
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Staurolite schist
Zircon (var. cyrtolite)
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