Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Rossmanite: [ ]LiAl2Al6(Si6O18)(BO3)3(OH)4
Comments: Pale pink to tan translucent prismatic rossmanite crystals. Location: Near Rozna, Western Moravia, Jihomoravsky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Roweite: Ca2Mn++2B4O7(OH)6
Comments: Pinkish nodular massive roweite. Location: Solongo, Republic of Buryatia, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rozenite: Fe++SO4·4(H2O) Ferrinatrite: Na3Fe+++(SO4)3·3(H2O) Copiapite: Fe++Fe+++4(SO4)6(OH)2·20(H2O)
Comments: White powdery rozenite coating with yellow ferrinatrite on purple copiapite. Location: Le Cetine Mine, Siena, Tuscany, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rusakovite: (Fe+++,Al)5(VO4,PO4)2(OH)9·3(H2O)
Comments: Orange-brown rusakovite coatings on dark brown sandstone. Location: Long Park, Montrose County, Colorado, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rustumite: Ca10(Si2O7)2(SiO4)Cl2(OH)2 Dellaite: Ca6Si3O11(OH)2
Comments: White grains of dellaite, intermixed with rustumite. Location: Queretaro, Zacatecas, Mexico. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Ruthenium: (Ru,Ir,Os) Isoferroplatinum: (Pt,Pd)3(Fe,Cu)
Comments: Scanning electron micrograph of polished section of ruthenium nugget with isoferroplatinum inclusions. Location: Miass River, Chelyabinsk District, Southern Urals, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rynersonite: Ca(Ta,Nb)2O6
Comments: Off-white fibrous rynersonite. Location: Brown Derby No. 1 Mine, Gunnison County, Colorado, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rynersonite: Ca(Ta,Nb)2O6 Schiavinatoite: (Nb,Ta)BO4
Comments: Brown, columnar schiavinatoite with minor white rynersonite sticks on quartz. Location: Ampanodiana Sud, Tetezantsio, Mahaiza, Antananarivo, Madagascar. Scale: See Image. © Jeff Weissman / Photographic Guide to Mineral Species
Sabelliite: Cu2Zn(As,Sb)O4(OH)3
Comments: Green crystalline sabelliite on matrix. Location: West Schrofen, Brixlegg, Tirol, Austria. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sabugalite: HAl(UO2)4(PO4)4·16(H2O)
Comments: Platy sabugalite crystals. Location: Margnac, Haute-Vienne, France. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sacrofanite: (Na,Ca,K)9Si6Al6O24[(OH),(SO4),(CO3),Cl)]4·n(H2O)
Comments: Translucent crystalline sacrofanite on diopside. Location: Sacrofano Quarry, Rome, Lazio, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Samarskite-(Y): (Y,Fe+++,U)(Nb,Ta)5O4 Uranpyrochlore: (U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Comments: Deep greenish-brown resinous crystalline massive uranpyrochlore with black samarskite-(Y). Location: Beryl Hill, near Yinnietharra Station, Western Australia, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sanbornite: BaSi2O5 Muirite: Ba10Ca2Mn++TiSi10O30(OH,Cl,F)10
Comments: Translucent orange crystalline muirite in sanbornite. Location: Big Creek, Fresno County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sanbornite: BaSi2O5
Comments: Micaceous sanbornite. Location: Esquire No. 1 Mine, Big Creek, Fresno County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sanbornite: BaSi2O5 Traskite: (Ba,Ca)9(Fe++,Mn)2Ti2(SiO3)12(OH,Cl,F)6·6(H2O)
Comments: Orange translucent crystalline traskite in white sanbornite. Location: Rush Creek, Fresno County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sanjuanite: Al2(PO4)(SO4)(OH)·9(H2O)
Comments: Silky sanjuanite mass. Location: Chica del Zonda, San Juan, Argentina. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Santafeite: (Mn,Fe,Al,Mg)2(Mn++++,Mn++)2(Ca,Sr,Na)3(VO4,AsO4)4(OH)3·2(H2O)
Comments: Brownish-black silky santafeite in rusty quartz. Location: Monument Valley, Navajo County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sarcopside: (Fe++,Mn,Mg)3(PO4)2
Comments: Brown massive sarcopside. Location: Bull Moose Mine, Custer County, South Dakota, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sarmientite: Fe+++2(AsO4)(SO4)(OH)·5(H2O)
Comments: Pale olive-green chalky massive sarmientite. Location: Kotzebue, Alaska, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sasaite: (Al,Fe+++)14(PO4)11(SO4)(OH)7·84(H2O)
Comments: Whitish sasaite coatings on altering serpentinite rock. Location: Breitenau, Steiermark, Austria. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species