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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Arkose
Augen gneiss block
Banded iron formation
Basalt drill core
Basalt drill core
Basalt drill core
Basaltic cinder
Cape York
Folded anorthosite
Freedom Diamond
Hemimorphite
Johnstown
Manganoan calcite
Microcline (var. amazonite)
Migmatite
Nakhla
Olivine-basalt drill core
Olivine-gabbro
Peridot gemstones
Peridotite xenoliths in basalt
Quartz (var. agate)
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Tugtupite
Zircon (var. cyrtolite)
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