Mineral Specimen Images (D)

Denisovite: (K,Na)Ca2Si3O8(F,OH)

Comments: Grayish-white fibrous denisovite.
Location: Eveslogchorr Mt , Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Denisovite: (K,Na)Ca2Si3O8(F,OH)

Comments: Grayish-white fibrous denisovite.
Location: Eveslogchorr Mt , Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Denningite: (Mn,Zn)Te2O5  
Tellurite: TeO2

Comments: Vitreous colorless to very pale yellowish elongated crystals denningite with yellow tellurite.
Location: Bambolla Mine, Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Denningite: (Mn,Zn)Te2O5  
Tellurite: TeO2

Comments: Vitreous colorless to very pale yellowish elongated crystals denningite with yellow tellurite.
Location: Bambolla Mine, Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Derbylite: (Fe+++,Fe++,Ti)7Sb+++O13(OH)

Comments: Small black crystals of derbylite in matrix.
Location: Buca della Vena Mine, Stazzema (Ponte Stazzemese), Versilia, Apuan Alps, Lucca Province, Tuscany, Italy. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Derbylite: (Fe+++,Fe++,Ti)7Sb+++O13(OH)

Comments: Small black crystals of derbylite in matrix.
Location: Buca della Vena Mine, Stazzema (Ponte Stazzemese), Versilia, Apuan Alps, Lucca Province, Tuscany, Italy. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Derriksite: Cu4(UO2)(SeO3)2(OH)6

Comments: Light blue crystalline aggregates of derriksite.
Location: Musonoi mine, Kolwezi, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Derriksite: Cu4(UO2)(SeO3)2(OH)6

Comments: Light blue crystalline aggregates of derriksite.
Location: Musonoi mine, Kolwezi, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Desautelsite: Mg6Mn+++2(CO3)(OH)16·4(H2O)

Comments: Serpentinite with scaly reddish-orange crystals of desautelsite.
Location: Artinite Pit, San Benito County, California, USA. Scale: 3 x 4 cm.
© John Veevaert

Desautelsite: Mg6Mn+++2(CO3)(OH)16·4(H2O)

Comments: Serpentinite with scaly reddish-orange crystals of desautelsite.
Location: Artinite Pit, San Benito County, California, USA. Scale: 3 x 4 cm.
© John Veevaert

Descloizite: PbZn(VO4)(OH)

Comments: Dark reddish brown, crystalline aggregate of descloizite.
Location: Grootfontein. Namibia. Scale: 3 cm.
© Fabre Minerals

Descloizite: PbZn(VO4)(OH)

Comments: Dark reddish brown, crystalline aggregate of descloizite.
Location: Grootfontein. Namibia. Scale: 3 cm.
© Fabre Minerals

Dessauite: (Sr,Pb)(Y,U)(Ti,Fe+++)20O38

Comments: SEM photograph of tabular {001} dessauite crystals on calcite. (AmMin v82:807).
Location: Buca della Vena mine, Tuscany, Italy. Scale: Scale bar: 0 .1mm.
© American Mineralogist

Dessauite: (Sr,Pb)(Y,U)(Ti,Fe+++)20O38

Comments: SEM photograph of tabular {001} dessauite crystals on calcite. (AmMin v82:807).
Location: Buca della Vena mine, Tuscany, Italy. Scale: Scale bar: 0 .1mm.
© American Mineralogist

Devilline: CaCu4(SO4)2(OH)6·3(H2O)

Comments: Laminar crystals of blue devilline on matrix..
Location: Spania Dolina (ex-Herrengrund) Banská Bystrica Slovak Republic. Scale: Specimen size: 6.9 x 3.3 x 5.7 cm.
© Fabre Minerals

Devilline: CaCu4(SO4)2(OH)6·3(H2O)  
Malachite: Cu2(CO3)(OH)2

Comments: Blue crystals of devilline on green, botryoidal malachite.
Location: Spania Dolina (Herrengrund), Slovakia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Devilline: CaCu4(SO4)2(OH)6·3(H2O)

Comments: Laminar crystals of blue devilline on matrix..
Location: Spania Dolina (ex-Herrengrund) Banská Bystrica Slovak Republic. Scale: Specimen size: 6.9 x 3.3 x 5.7 cm.
© Fabre Minerals

Devilline: CaCu4(SO4)2(OH)6·3(H2O)  
Malachite: Cu2(CO3)(OH)2

Comments: Blue crystals of devilline on green, botryoidal malachite.
Location: Spania Dolina (Herrengrund), Slovakia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Dewindtite: Pb3[H(UO2)3O2(PO4)2]2·12(H2O)

Comments: Yellow dewindtite exposed on fracture surface. Schumacher Collection.
Location: Les Bois-Noirs Mine, Loire, Rhône-Alpes, France. Scale: Picture size 5 mm.
© Paul M. Schumacher

Dewindtite: Pb3[H(UO2)3O2(PO4)2]2·12(H2O)  
Kivuite: (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8·7(H2O)

Comments: Pale yellow coatings of kivuite with yellowier dewindtite on pegmatite.
Location: Ruggles Mine, Grafton, Grafton County, New Hampshire, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species