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Rhodochrosite: MnCO3 Helvite: Mn4Be3(SiO4)3S
Comments: Yellow crystals of helvite on quartz and pink rhodochrosite. Location: Galerie Elisabeth, Cavnic, Maramures, Romaina. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Rhodochrosite: MnCO3
Comments: Cherry red rhodochrosite with quartz, tetrahedrite, chalcopyrite and fluorite matrix. Location: Rivas Pocket, Fluorite Raise, Sweet Home mine, Alma, Colorado, USA. Scale: 8 x 8cm.. © Fabre Minerals