Mineral Specimen Images (R)

Retgersite: NiSO4·6(H2O)

Comments: Pale blue powdery retgersite on rock.
Location: Mina La Motte, near Frederocktown, Madison County, Missouri, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Retzian-(Nd): Mn2(Nd,Ce,La)(AsO4)(OH)4

Comments: Small crystal fragment of brown-orange retzian-(Nd), mounted on paper.
Location: Sterling Mine, Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA. Scale: Not Given.
© Jeff Weissman / Photographic Guide to Mineral Species

Revdite: Na2Si2O5·5(H2O)

Comments: Transparent crystal fragment of revdite photographed through a capsule.
Location: Mt. Alluaiv, Lovozero, Kola, Russia. Scale: Not Given.
© Diederik Visser

Reyerite: (Na,K)4Ca14Si22Al2O58(OH)8·6(H2O)

Comments: Micaceous white plates of reyerite in cavity in basalt.
Location: Drynoch near Carbost, Isle of Skye, Scotland. Scale: Specimen Size 1.5x2 cm.
© Diederik Visser

Rhabdophane-(Ce): (Ce,La)PO4·(H2O)

Comments: White acicular crystals rhabdophane-(Ce) on matrix.
Location: Reinersreuth Quarry (Köhlerloch), Großer Waldstein, Weißenstadt, Fichtelgebirge, Bavaria, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Rhabdophane-(La): (La,Ce)PO4·(H2O)

Comments: Analcime crystal covered with rhabdophane-(La) crystals with black aegirine.
Location: Demix Quarry, Mont St Hilaire, Quebec, Canada. Scale: Crystal Size to 2cm.
© Adam Larson

Rheniite: ReS2

Comments: Specimen covered with rheniite as micro crystals to .25 mm across.
Location: Kudryaviy Volcano, Iturup Island, Kurilian Chain, Russia. Scale: 4.7 x 3 cm.
© John Veevaert

Rhenium: Re

Comments: Dark gray metallic rhenium flakes.
Location: Transbaikalia Region, Chita District, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rhodarsenide: (Rh,Pd)2As

Comments: BSE image of dark gray metallic inclusion of rhodarsenide in sperrylite and Os,Ir,Ru matrix. Inset images show detail BSE and epoxy grain mount.
Location: Miass River, Urals, Russia. Scale: See Image.
© Rruff Database

Rhodesite: KHCa2Si8O19·5(H2O)  
Magadiite: NaSi7O13(OH)3·4(H2O)

Comments: Earth pale tan massive magadiite with dark yellow crystalline rhodesite.
Location: East Fork, Trinity River, Trinity County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rhodesite: KHCa2Si8O19·5(H2O)

Comments: Pearly white to tan rhodesite crusts.
Location: Quarter-mile east of Trinity River, Trinity County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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

Rhodizite: (K,Cs)Al4Be4(B,Be)12O28

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  
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

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

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  
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

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