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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Baryte with berthierite
Basaltic cinder
Beryl (var. aquamarine)
Cronstedtite
Fluorite
Fluorite
Hemimorphite
Johnstown
Lafayette
Lafayette
Manganoan calcite
Marcasite
Mezö-Madaras
Microcline
Microcline (var. amazonite)
Migmatite
Pearl and Peridot Haircomb
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Spinels
Sylvanite
Zircon (var. cyrtolite)
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