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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Cafarsite
Calcite
Calcite with duftite
Demantoid with serpentine
Dyscrasite
Fluorite with quartz
Fluorites
Gypsum with sulphur
Kyanite schist
Ludlockite with smithsonite
Magnetite
Malachite with azurite
Malachite with cuprite, quartz, and azurite
Milarite with chlorite
Orthoclase (var. adularia)
Phosgenite
Pyrope Hair Comb
Quartz (var. smoky quartz)
Quartz Gems
Siderite
Smithsonite
Sulfur
Tennantite
Unusual Gems
Vigarano
Wulfenite
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