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

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

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

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

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

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

Diaboleite: Pb2CuCl2(OH)4

Comments: Coarsely crystalline, blue diaboleite.
Location: Mammoth Mine, Tiger, Arizona. USA. Scale: 2.8 x 2.5 cm.
© John Veevaert

Diaboleite: Pb2CuCl2(OH)4  
Yedlinite: Pb6CrCl6(O,OH)8

Comments: Minute cranberry-colored rounded yedlinite crystal with blue diaboleite on yellow-brown wulfenite.
Location: Mammoth Mine, Tiger, Pinal County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Diadochite: Fe+++2(PO4)(SO4)(OH)·6(H2O)

Comments: Brown balls of diadochite on matrix.
Location: Union Carbide mine, Garland County, Arkansas, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Diamond: C

Comments: Single octahedral crystal of diamond.
Location: Ghana, Africa. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Diamond: C

Comments: Translucent diamond penetration twin crystals.
Location: Mbuji-Mayi (Miba), Democratic Republic of the Congo (Zaire). Scale: 3.70 carats, 7x7x7 mm.
© John Betts - Fine Minerals

Diamond: C

Comments: Photomicrographs (PPL) of numerous microdiamonds in Kumdy-Kol caboniferous dolomite marble (Elements v1, no 2).
Location: Kokchetav Massif, Kumdy-Kol ultra high pressure facies area, northern Kazakhstan. Scale: See Image.
© Elements Magazine

Diamond: C  
Yimengite: K(Cr,Ti,Fe,Mg)12O19

Comments: Birefringence image of diamond displaying the location of yimengite inclusions (1, 2 , 3, 4, and 5) along the different octahedral growth zones. (Lithos, v77:181).
Location: Sese kimberlite (50 km) south of Masvingo, Zimbabwe. Scale: See Image.
© Lithos

Diaoyudaoite: NaAl11O17

Comments: Dark green crystalline diaoyudaoite.
Location: Novosibirsk District, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Diaphorite: Pb2Ag3Sb3S8

Comments: Prismatic, striated, metallic diaphorite crystal on quartz.
Location: Morey, Nye County, Nevada, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals