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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Attaway Ametrine
Augen gneiss block
Basaltic cinder
Bismuth
Chabazite
Dyber Ametrine
Fluorite with calcite
Fluorites
Hemimorphite
Johnstown
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Millerite
Paravauxite
Phosphophyllite
Prehnite
Pyrite
Quartz (var. agate)
Quartz (var. ametrine)
Quartz (var. smoky quartz) with microcline
Quartz Gems
Rhodochrosite
Southwest Sunset
Sphalerite
Unusual Gems
Unusual Gems
Unusual Gems
Vivianite with pyrite
Zincite
Zincite
Zircon (var. cyrtolite)
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