Continuing our picture gallery of minerals and gemstones in the Smithsonian Museum of Natural History collection, this post features some exceptional carbonate minerals on display in the museum.
Click the pictures below for a larger version pop-up.
![Large Calcite Crystal on Calcite from Shullsberg, Wisconsin](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-01.jpg)
Large
Calcite Crystal on Calcite from Shullsberg, Wisconsin
Calcite with Duftite Inclusions, Resulting in Green Color, From Tsumeb, Namibia
![Pink Manganoan Calcite from the Idarado Mine, Ouray, Colorado, Namibia](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-03.jpg)
Manganoan
Calcite from the Idarado Mine, Ouray, Colorado, Namibia
![Brown Calcite with Goethite Inclusions from Santa Eulalia, Chihuahhua, Mexico](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-04.jpg)
Brown
Calcite with
Goethite Inclusions from Santa Eulalia, Chihuahua, Mexico
![Large Calcite Scalenohedron from Joplin, Missouri](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-05.jpg)
Large
Calcite Scalenohedron from Joplin, Missouri
![Deep Red Rhodochrosite from N'Chwaning Mine, Hotazel, South Africa](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-06.jpg)
Deep Red
Rhodochrosite from N'Chwaning Mine, Hotazel, South Africa
![Large Concentric Rhodochrosite Slab from Catamarca, Argentina](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-07.jpg)
Large
Concentric Rhodochrosite Slab from Catamarca, Argentina
![Huge botryoidal Malachite Blob from Shaba, D.R. Congo](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-08.jpg)
Huge
botryoidal Malachite Blob from Shaba, D.R. Congo
Smithsonite Stalagmites from Tsumeb, Namibia
![Nest-Shaped Malachite Formation from the Copper Queen Mine, Bisbee, Arizona](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-10.jpg)
Nest-Shaped
Malachite Formation from the Copper Queen Mine, Bisbee, Arizona
![Prismatic Azurite Crystal from the Copper Queen Mine, Bisbee, Arizona](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-11.jpg)
Prismatic
Azurite Crystal from the Copper Queen Mine, Bisbee, Arizona
![Giant Calcite Crystal Cluster from the Woodchuck Mine, Cardin, Oklahoma](/image.axd?picture=%2f2015%2f11%2fsmithsonian-museum-mineral-carbonates-s-12.jpg)
Giant
Calcite Crystal Cluster from the Woodchuck Mine, Cardin, Oklahoma