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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Basaltic cinder
Cape York
Ensisheim
Folded anorthosite
Freedom Diamond
Hemimorphite
Johnstown
Juvinas
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Orgueil meteorite
Pitts
Pyromorphite
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Quartz on siderite
Rhodochrosite
Staurolite
Tugtupite
Zircon (var. cyrtolite)
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