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Rhodizite: (K,Cs)Al4Be4(B,Be)12O28
Comments: Two large, blocky, greenish crystals of rhodizite on matrix. Location: Antsogombato, Antsirabe, Madagascar. Scale: 2.6 x 2.5 cm. © Fabre Minerals
Comments: Several yellow, gemmy crystals of rhodizite frozen in a feldspar matrix. Location: Sahanivotry, Sahatany Valley, Madagascar. Scale: 3 x 2.5 x 2 cm. © Isaias Casanova / IC 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
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
Rhodonite: (Mn++,Fe++,Mg,Ca)SiO3 Caryinite: (Na,Pb)(Ca,Na)(Ca,Mn++)(Mn++,Mg)2(AsO4)3
Comments: Yellow crystalline caryinite with pink rhodonite. Location: Langban, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rhodonite: (Mn++,Fe++,Mg,Ca)SiO3 Akatoreite: (Mn++,Fe++)9Al2Si8O24(OH)8
Comments: Brown akatoreite in pink rhodonite. Location: Akatore Creek, Eastern Otago Peninsula, South Island, New Zealand. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rhodonite: (Mn++,Fe++,Mg,Ca)SiO3
Comments: Light red rhodonite and minor quartz. Location: Chiurucu mine, Dos de Mayo, Peru. Scale: 3 x 3.5 cm. © Fabre Minerals
Comments: Deep red blocky prismatic crystals of rhodonite to 3cm. Location: Broken Hill mine, New South Wales, Australia. Scale: 6.5 x 5 x 4cm. © Tom Loomis / Dakota Matrix
Rhodostannite: Cu2FeSn3S8 Hocartite: Ag2FeSnS4
Comments: B&W image of hocartite (hc) and rhodostannite (r) in sphalerite (s) and pyrite (p). (Mineralogical Journal, v15:222). Location: Toyoha mine, SW Sapporo City, Hokkaido, Japan. Scale: Scale Bar 50µm. © Mineralogical Journal
Rhomboclase: (H5O2)+Fe+++(SO4)2·2(H2O)
Comments: Platy crystal rhomboclase spray. Location: Rio Tinto, Andalucia, Spain. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rhonite: Ca2(Mg,Fe++,Fe+++,Ti)6(Si,Al)6O20
Comments: Brown, striated, tabular crystal of rhonite on matrix. Location: Sattleberg, Laacher See, Rhineland-Pal., Germany. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals