Manganoan calcite

Manganocalcite

Manganoan calcite or Manganocalcite is a variety of calcite rich in manganese, which gives the mineral a pink color.^[1] Its chemical composition is (Ca,Mn)CO₃. It was first reported from the Banská Štiavnica Mining District, Slovak Republic, but is widely distributed around the world, notably at Naica, Chihuahua, Mexico, in the Cave of Swords and Bulgaria.

Manganoan calcite is sometimes confused with rhodochrosite. The amount of manganese in manganocalcite 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.

References

↑ Manganoan Calcite at Mindat

External links

Simple	Hausmannite Manganite Manganosite Nsutite Pyrolusite

Mixed	Birnessite Bixbyite Ferrocolumbite Ferrotantalite Galaxite Jacobsite Manganotantalite Psilomelane Romanèchite Tantalite Todorokite Umber

Phosphates

Silicates

Sulfides

Other

This article is issued from Wikipedia - version of the 2/4/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.