Rhodochrosite, is a manganese carbonate mineral. Red rose coloured, but can be pink to pale brown. It is Greek rhodon for rose and chrosis for colour. Also called Rosa del Inca, Inca Rose or Rosinca. Rhodochrosite is formed by the oxidation of manganese ore, and is found in South Africa, China, and the Americas. Rhodochrosite is Argentina's "national gemstone". Colorado officially named rhodochrosite as its state mineral in 2002. It was first described in 1813 in referenc