Manganoan calcite
（重定向自Manganocalcite）
Manganoan calcite or Manganocalcite is a variety of calcite rich in manganese, which gives the mineral a pink color. 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.