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.
Rancieite: (Ca,Mn++)Mn++++4O9·3(H2O)
Comments: Brown resinous rancieite veinlets in limonite / wad rock. Location: Montmirat, Lozere, France. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Rankamaite: (Na,K,Pb,Li)3(Ta,Nb,Al)11(O,OH)30
Comments: White, massive-fibrous rankamaite. Location: Mumba, Kivu, Congo (Zaïre). Scale: Picture size 2 mm. © Thomas Witzke / Abraxas-Verlag
Ransomite: CuFe+++2(SO4)4·6(H2O)
Comments: Pale bluish-green powdery ransomite. Location: United Verde Mine, Jerome, Black Hills, Verde District, Yavapai Co., Arizona, USA. Scale: Picture size 4.5 mm. © Thomas Witzke / Abraxas-Verlag
Ranunculite: HAl(UO2)(PO4)(OH)3·4(H2O)
Comments: SEM image of nodular ranunculite showing the aggregates of lamellar crystals. (MinMag v43:327). Location: Uranium-rich portions of a pegmatite mainly worked for beryl and columbite at Kobokobo, Kivu, Zaire. Scale: Picture Size 300 x. © Mineralogical Magazine
Rapidcreekite: Ca2(SO4)(CO3)·4(H2O)
Comments: Colorless, radial-acicular crystals of rapidcreekite on matrix. Location: Jeremias Glück Mine (Fairy Grotto), Garnsdorf, Saalfeld, Thuringia, Germany. Scale: Picture size 8 mm. © Thomas Witzke / Abraxas-Verlag
Rappoldite: Pb(Co,Ni,Zn,)2(AsO4)2·2(H2O)
Comments: Small brown crystals of rappoldite. Location: Rappold, Schneeberg, Erzgebirge, Germany. Scale: Box Size 1.25 x 1.25 inches. © Sonke Stolze / Systematic Minerals
Raslakite: Na15Ca3Fe3(Na,Zr)3Zr3(Si,Nb)(Si25O73)(OH,H2O)3(Cl,OH)
Comments: Orange-red raslakite grain in nepheline-syenite. Part of cotype specimen. Location: Karnasurt Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: FOV is 12x10 mm. © Pavel M. Kartashov
Raspite: PbWO4
Comments: Brown, tabular crystal of raspite on matrix. Location: Broken Hill, New South Wales, Australia. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Rastsvetaevite: Na27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2
Comments: Pinkish rastsvetaevite specimen in 1 cm plastic box. Location: Mt. Rasvumchorr, Chibiny, Kola, Russia. Scale: See Fingers. © Diederik Visser
Rasvumite: KFe2S3
Comments: Opaque dull orange fibrous rasvumite masses. Location: Coyote Peak, Humboldt County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species