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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Basalt drill core
Basalt drill core
Basalt drill core
Cafarsite
Elbaites
Ensisheim
Fluorite with quartz
Fluorites
Granite
Havey Tourmaline
Juvinas
Kyanite schist
Limestone with chert
Magnetite
Milarite with chlorite
Olivine-basalt drill core
Opal
Opal bone
Orgueil meteorite
Orthoclase (var. adularia)
Peridotite xenoliths in basalt
Pyromorphite
Quartz (var. amethyst)
Quartz (var. smoky quartz)
Quartz Gems
Quartz on siderite
Quinn Canyon
Roebling Opal
Sandstone
Siderite
Staurolite
Staurolite schist
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