Manganoan calcite ormanganocalcite is a variety ofcalcite rich inmanganese, which gives the mineral a pink color.^[1] Its chemical formula is(Ca,Mn)CO₃. It was first reported from theBanská Štiavnica Mining District,Slovak Republic,^[1] but is widely distributed around the world, notably in theCave of Swords atNaica, Chihuahua, Mexico as well as inBulgaria.

Manganoan calcite is sometimes confused withrhodochrosite. The amount of manganese in manganoan calcite varies at different localities, and the mineral forms asolid solution series between calcite and rhodochrosite, with the color becoming redder with a higher proportion of manganese.

• List of minerals

• Photo of Manganoan Calcite at theUniversity of Delaware
• Manganoan Calcite Gallery

• Carbonate minerals
• Calcium minerals
• Manganese(II) minerals
• Carbonate mineral stubs

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