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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
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
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