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Reichenbachite: Cu++5(PO4)2(OH)4
Comments: Green crystals of reichenbachite on quartz. Location: Bergen, near Falkenstein, Vogtland, Saxony, Germany. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Reidite: ZrSiO4
Comments: Scanning electron microscope photomicrograph of the surface of an etched shocked zircon with a skeletal crystalline phase that may be reidite. X-ray diffraction data indicate that this zircon contains minor amounts of reidite. (AmMin 87:563). Location: Found in an upper Eocene impact ejecta layer in marine sediments on the upper continental slope off New Jersey and on Barbados. Scale: See Image. © American Mineralogist
Reinerite: Zn3(As+++O3)2
Comments: Sky blue fiberous vein fillings of reinerite in matrix. Location: Tsumeb, Namibia.. Scale: Specimen Size 3.8 cm Tall. © William Pinch
Reinhardbraunsite: Ca5(SiO4)2(OH,F)2 Brownmillerite: Ca2(Al,Fe+++)2O5
Comments: Pink crystalline reinhardbraunsite in brownmillerite. Location: Near Bellerberg, Eifel, Rheinland-Pflaz, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Remondite-(Ce): Na3(Ce,La,Ca,Na,Sr)3(CO3)5
Comments: Flesh-colored, acicular crystals of remondite-(Ce) in matrix. Location: Mt. St. Hilaire, Quebec, Canada. Scale: Box Base 3 x 3 cm. © Sonke Stolze / Systematic Minerals
Renardite: Pb(UO2)4(PO4)2(OH)4·7(H2O)
Comments: Bright yellow, tabular crystals of renardite on matrix. Location: Grury, Saone-et-Loire, France. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Renierite: (Cu,Zn)11(Ge,As)2Fe4S16
Comments: Dull dark orange tarnished renierite with brassy chalcopyrite. Location: Prince Leopold Mine, Kipushi, Shaba, Zaire. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Reppiaite: Mn++5[(V,As)O4]2(OH)4
Comments: Vitreous orange crystals of reppiaite embedded in matrix. Location: Gambatesa mine, Genova, Ligurai, Italy. Scale: Crystal size 0.5mm. © Tom Loomis / Dakota Matrix
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