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Smithsonian National Museum of Natural History
GeoGallery
Breadcrumb
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GeoGallery
Arkose
Augen gneiss block
Banded iron formation
Basaltic cinder
Fluorites
Hemimorphite
Johnstown
Manganoan calcite
Microcline
Microcline (var. amazonite)
Migmatite
Olivine-gabbro
Paragould
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Smithsonites
Success meteorite
Yellow diamond crystal
Zircon (var. cyrtolite)
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