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Smithsonian National Museum of Natural History
GeoGallery
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GeoGallery
Chabazite
Hemimorphite
Manganoan calcite
Microcline (var. amazonite)
Millerite
Millerite with hematite and quartz
Prehnite
Quartz (var. agate)
Quartz (var. smoky quartz) with microcline
Rhodochrosite
Zincite
Zincite
Zircon (var. cyrtolite)
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