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Smithsonian National Museum of Natural History
GeoGallery
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Basalt drill core
Basalt drill core
Basalt drill core
Cafarsite
Calcite
Fluorite with quartz
Fluorites
Kyanite schist
Magnetite
Marble with wollastonite
Milarite with chlorite
Millerite
Millerite with hematite and quartz
Olivine-basalt drill core
Orthoclase (var. adularia)
Peekskill
Peridotite xenoliths in basalt
Quartz (var. smoky quartz)
Quartz Gems
Siderite
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