Mineral Specimen Images (D)

Dravite: NaMg3Al6(BO3)3Si6O18(OH)4

Comments: Greenish-brown chrome-rich dravite tourmaline crystals up to 13 mm long with complex terminations. Fluoresces mildly under UV illumination.
Location: Shako Ranch, Mwatate Kabanga, Voi, Taita-Taveta district, Coast Province, Kenya. Scale: 14x13x10 mm.
© John Betts - Fine Minerals

Dravite: NaMg3Al6(BO3)3Si6O18(OH)4

Comments: Greenish-brown chrome-rich dravite tourmaline crystals up to 13 mm long with complex terminations. Fluoresces mildly under UV illumination.
Location: Shako Ranch, Mwatate Kabanga, Voi, Taita-Taveta district, Coast Province, Kenya. Scale: 14x13x10 mm.
© John Betts - Fine Minerals

Dresserite: BaAl2(CO3)2(OH)4·(H2O)

Comments: White divergent sprays of fibrous crystals dresserite crystals.
Location: Francon quarry, Montréal, Jacques Cartier Co., Québec, Canada. Scale: Crystal size 5mm.
© Tom Loomis / Dakota Matrix

Dresserite: BaAl2(CO3)2(OH)4·(H2O)

Comments: White divergent sprays of fibrous crystals dresserite crystals.
Location: Francon quarry, Montréal, Jacques Cartier Co., Québec, Canada. Scale: Crystal size 5mm.
© Tom Loomis / Dakota Matrix

Dresserite: BaAl2(CO3)2(OH)4·(H2O)

Comments: Radiating spheres of dresserite on matrix.
Location: Francon Quarry, Montreal, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Dresserite: BaAl2(CO3)2(OH)4·(H2O)

Comments: Radiating spheres of dresserite on matrix.
Location: Francon Quarry, Montreal, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Drugmanite: Pb2(Fe+++,Al)H(PO4)2(OH)2

Comments: SEM view of a typical drugrnanite crystal.
Location: Found in silicified karst deposits, Richelle, 15 km north of Liege, Belgium. Scale: Picture Size 9 µm.
© Mineralogical Magazine

Drugmanite: Pb2(Fe+++,Al)H(PO4)2(OH)2

Comments: SEM view of a typical drugrnanite crystal.
Location: Found in silicified karst deposits, Richelle, 15 km north of Liege, Belgium. Scale: Picture Size 9 µm.
© Mineralogical Magazine

Drysdallite: Mo(Se,S)2

Comments: Metallic, black, submillimeter crystals of drysdallite approximatly 0.1 mm.
Location: Western Province, Zambia. Scale: Picthure Size 5 mm.
© Sandro Maggia/Minernet.it

Drysdallite: Mo(Se,S)2

Comments: Metallic, black, submillimeter crystals of drysdallite approximatly 0.1 mm.
Location: Western Province, Zambia. Scale: Picthure Size 5 mm.
© Sandro Maggia/Minernet.it

Dufrenite: Fe++Fe+++4(PO4)3(OH)5·2(H2O)

Comments: Dark olive-greenish crystal of dufrenite on matrix.
Location: Rengersdorf, Görlitz, Oberlausitz, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Dufrenite: Fe++Fe+++4(PO4)3(OH)5·2(H2O)

Comments: Dark olive-greenish crystal of dufrenite on matrix.
Location: Rengersdorf, Görlitz, Oberlausitz, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Dufrenoysite: Pb2As2S5

Comments: Black prismatic crystal of Dufrenoysite with brassy yellow pyrite on succroidal dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Dufrenoysite: Pb2As2S5

Comments: Single, black dufrénoysite crystal in a vug in white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Crystal size 2.5 mm.
© Walter Gabriel

Dufrenoysite: Pb2As2S5

Comments: Black prismatic crystal of Dufrenoysite with brassy yellow pyrite on succroidal dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Dufrenoysite: Pb2As2S5

Comments: Single, black dufrénoysite crystal in a vug in white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Crystal size 2.5 mm.
© Walter Gabriel

Duftite-alpha: PbCu(AsO4)(OH)  
Mimetite: Pb5(AsO4)3Cl

Comments: Mimetite crystals are replaced by Duftite-alpha on a gossanous matrix.
Location: Mt. Bonnie Mine, Northern Territory, Australia. Scale: Crystal size to 3mm.
© John Veevaert

Duftite-alpha: PbCu(AsO4)(OH)  
Mimetite: Pb5(AsO4)3Cl

Comments: Mimetite crystals are replaced by Duftite-alpha on a gossanous matrix.
Location: Mt. Bonnie Mine, Northern Territory, Australia. Scale: Crystal size to 3mm.
© John Veevaert

Duftite-beta: PbCu(AsO4)(OH)

Comments: Intensely green Duftite-beta on fluorescent calcite.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: .
© Fabre Minerals

Duftite-beta: PbCu(AsO4)(OH)

Comments: Intensely green Duftite-beta on fluorescent calcite.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: .
© Fabre Minerals