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Smithsonian National Museum of Natural History
GeoGallery
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Calcite with duftite
Fluorite
Ludlockite with smithsonite
Malachite with azurite
Malachite with cuprite, quartz, and azurite
Nifontovite
Pentahydroborite
Smithsonite
Stibnite
Tennantite
Topaz Gems
Wulfenite
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