Manganoan calcite or manganocalcite is a variety of calcite rich in manganese, which gives the mineral a pink color.[1] Its chemical formula is (Ca,Mn)CO3. It was first reported from the Banská Štiavnica Mining District, Slovak Republic,[1] but is widely distributed around the world, notably in the Cave of Swords at Naica, Chihuahua, Mexico as well as in Bulgaria.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/7/78/Calcite-60733.jpg/220px-Calcite-60733.jpg)
Manganoan calcite is sometimes confused with rhodochrosite. The amount of manganese in manganoan calcite varies at different localities, and the mineral forms a solid solution series between calcite and rhodochrosite, with the color becoming redder with a higher proportion of manganese.
See also
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edit- ^ a b Manganoan Calcite at Mindat
External links
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