Auction Win: Calcite
Pickup available at Crystal Castle
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Details
Locality: Sweetwater Mine, Ellington, Reynolds County, Missouri, USA
Size: Small Cabinet - 6 × 4.5 × 3 cm
The terminations of both light honey colored crystals are excellent, besides the interrupted growth on the right side of larger one, likely where it was attached to the pocket wall. This specimen has a red orange fluorescence, and displays it well. There is a point of contact on the back.
Calcite is a carbonate mineral with formula CaCO3. It was named by Friedrich Mohs in 1822 from the Greek word chalix, meaning lime. It is a major component of limestone, which people use in construction, cement, and lime.
Sweetwater Mine is an American classic locality in the Southeast Missouri Lead District, an area of Mississippi Valley-type sulfide deposits hosted in Paleozoic dolostone and limestone. The mine is notable for lead and zinc mineralization and has produced specimens of galena, sphalerite, calcite, chalcopyrite, pyrite, marcasite, bornite, and millerite. Among collectible material documented from the locality are spinel-law twinned galena crystals and well-crystallized sulfides that make Sweetwater Mine a recognized source for classic Missouri ore minerals today.
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