Mineral Specimen Images (R)

Robinsonite: Pb4Sb6S13

Comments: Dark gray, prismatic-acicular crystals of robinsonite on white marble.
Location: Pitone Quarry, Seravezza, Lucca, Italy. Scale: Picture size 2 cm.
© Dave Barthelmy

Robinsonite: Pb4Sb6S13

Comments: Dark gray, prismatic-acicular crystals of robinsonite on white marble.
Location: Pitone Quarry, Seravezza, Lucca, Italy. Scale: Picture size 2 cm.
© Dave Barthelmy

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5  
Lindbergite: Mn(C2O4)·2(H2O)

Comments: Rare organic mineral - lindbergite (Mn dihydrate oxalate) in white patches on rockbridgeite matrix.
Location: Boca Rica mine, Sapucaia do Norte, Gilileia, Minas Gerais, Brazil. Scale: Spot size 1 mm.
© Tom Loomis / Dakota Matrix

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5  
Stewartite: Mn++Fe+++2(PO4)2(OH)2·8(H2O)

Comments: Pointed, brownish yellow stewartite crystals on massive, dark rockbridgeite.
Location: Hagendorf, Bavaria, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5  
Wilhelmvierlingite: CaMn++Fe+++(PO4)2(OH)·2(H2O)

Comments: Yellow brown crystals wilhelmvierlingite with black rockbridgeite.
Location: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Waidhaus, Vohenstrauß, Oberpfalz, Bavaria, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5

Comments: Black cruciform twins of rockbridgeite on siderite.
Location: Big Chief mine, Keystone, Pennington County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5  
Stewartite: Mn++Fe+++2(PO4)2(OH)2·8(H2O)

Comments: Pointed, brownish yellow stewartite crystals on massive, dark rockbridgeite.
Location: Hagendorf, Bavaria, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5  
Tinsleyite: KAl2(PO4)2(OH)·2(H2O)  
Phosphosiderite: Fe+++PO4·2(H2O)

Comments: Violet botryoidal tinsleyite on bluish-purple botryoidal phosphosiderite on dark, massive rockbridgeite.
Location: Bendada, Guarda, Portugal. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5  
Wilhelmvierlingite: CaMn++Fe+++(PO4)2(OH)·2(H2O)

Comments: Yellow brown crystals wilhelmvierlingite with black rockbridgeite.
Location: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Waidhaus, Vohenstrauß, Oberpfalz, Bavaria, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5  
Lindbergite: Mn(C2O4)·2(H2O)

Comments: Rare organic mineral - lindbergite (Mn dihydrate oxalate) in white patches on rockbridgeite matrix.
Location: Boca Rica mine, Sapucaia do Norte, Gilileia, Minas Gerais, Brazil. Scale: Spot size 1 mm.
© Tom Loomis / Dakota Matrix

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5

Comments: Black cruciform twins of rockbridgeite on siderite.
Location: Big Chief mine, Keystone, Pennington County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5  
Tinsleyite: KAl2(PO4)2(OH)·2(H2O)  
Phosphosiderite: Fe+++PO4·2(H2O)

Comments: Violet botryoidal tinsleyite on bluish-purple botryoidal phosphosiderite on dark, massive rockbridgeite.
Location: Bendada, Guarda, Portugal. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rodalquilarite: H3Fe+++2(Te++++O3)4Cl  
Schieffelinite: Pb(Te++++++,S)O4·(H2O)

Comments: Creamy white Schieffelinite with minor green rodalquilarite.
Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Rodalquilarite: H3Fe+++2(Te++++O3)4Cl

Comments: Green crystals of rodalquilarite on matrix.
Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 4 m.
© Thomas Witzke / Abraxas-Verlag

Rodalquilarite: H3Fe+++2(Te++++O3)4Cl

Comments: Green crystals of rodalquilarite on matrix.
Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 4 m.
© Thomas Witzke / Abraxas-Verlag

Rodalquilarite: H3Fe+++2(Te++++O3)4Cl  
Schieffelinite: Pb(Te++++++,S)O4·(H2O)

Comments: Creamy white Schieffelinite with minor green rodalquilarite.
Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Rodolicoite: Fe+++PO4  
Grattarolaite: Fe+++3O3(PO4)

Comments: Brown grattarolaite, intimately intergrown with brown rodolicoite.
Location: Castelnuovo Mine, Santa Barbara lignite district, San Giovanni Valdarno, Valdarno (Val d'Arno), Arezzo Province, Tuscany, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Rodolicoite: Fe+++PO4  
Grattarolaite: Fe+++3O3(PO4)

Comments: Brown grattarolaite, intimately intergrown with brown rodolicoite.
Location: Castelnuovo Mine, Santa Barbara lignite district, San Giovanni Valdarno, Valdarno (Val d'Arno), Arezzo Province, Tuscany, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Roeblingite: Pb2Ca6(Si6O18)(SO4)2(OH)2·4(H2O)

Comments: Pure white opaque porcelaneous roeblingite mass.
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Roeblingite: Pb2Ca6(Si6O18)(SO4)2(OH)2·4(H2O)

Comments: Pure white opaque porcelaneous roeblingite mass.
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species