Mineral Specimen Images (R)

Ramsdellite: MnO2

Comments: Large mass of radiating ramsdellite crystals with terminated crystals.
Location: Lake Valley District, Sierra Co., New Mexico, USA. Scale: 11x10x8 cm.
© John Betts - Fine Minerals

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

Rasvumite: KFe2S3

Comments: Reddish brown micro crystals of rasvumite in vugs to about 0.75mm.
Location: Kirovskiy mine, Khibina massif, Kola Peninsula, Russia. Scale: 3.5 x 2.5 x 2.5cm.
© Tom Loomis / Dakota Matrix

Rathite: Pb8Pb4-x(Tl2As2)x(Ag2As2)As16S40

Comments: Gray metallic foliated rathite, with pyrite in sugary dolomite.
Location: Lengenbach Quarry, Binnental, Valais, Switzerland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rathite: Pb8Pb4-x(Tl2As2)x(Ag2As2)As16S40

Comments: Black prismatic crystal of rathite with glossy surface and red realgar on white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Crystal length 5 mm.
© Walter Gabriel

Rauenthalite: Ca3(AsO4)2·10(H2O)

Comments: Bright white botryoidal to transparent colorless prismatic rauenthalite microcrystals.
Location: Gabe Gottes, Sainte-Marie-aux-Mines, Alsace, Haute-Rhin, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rauvite: Ca(UO2)2V+++++10O28·16(H2O)

Comments: Irregular grains of dark-colored rauvite in matrix.
Location: Monument No. 2 Mine, Monument Valley, Apache County, Arizona, USA. Scale: Picture size 2.5 mm.
© Paul M. Schumacher

Rauvite: Ca(UO2)2V+++++10O28·16(H2O)

Comments: Brownish-yellow scaly rauvite on sandstone.
Location: Monument Valley, Apache County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ravatite: C14H10

Comments: Small crystals of ravatite.
Location: Carola Mine, Freital, near Dresden, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Realgar: AsS  
Duranusite: As4S

Comments: Small black Duranusite in orange-red realgar matrix.
Location: Duranus, Alpes-Maritimes, Provence-Alpes-Côte d'Azur, France. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Realgar: AsS

Comments: Sharp, dark red crystals of realgar to 2 cm on calcite.
Location: Hunan Province, Chin. Scale: Crystal size 2 cm.
© John Attard