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Dellaite: Ca6Si3O11(OH)2 Rustumite: Ca10(Si2O7)2(SiO4)Cl2(OH)2
Comments: White grains of dellaite, intermixed with rustumite. Location: Queretaro, Zacatecas, Mexico. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Delvauxite: CaFe+++4(PO4,SO4)2(OH)8·4-6(H2O) (?)
Comments: Pure botryoidal massive delvauxite. Location: Kutna Hora, Stredocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
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 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
Diaoyudaoite: NaAl11O17
Comments: Dark green crystalline diaoyudaoite. Location: Novosibirsk District, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Dickinsonite: KNa4Ca(Mn++,Fe++)14Al(PO4)12(OH)2
Comments: Salmon-colored, crystalline dickinsonite. Location: Branchville, Fairfield County, Connecticut, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Dickite: Al2Si2O5(OH)4
Comments: Porcelaneous pure white massive dickite. Location: Beaver County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Dickthomssenite: Mg(V+++++2O6)·7(H2O)
Comments: White, translucent balls of fiberous aggregates of dickthomssenite on matrix. Location: Vanadium Queen Mine, Paradox District, La Sal Area, San Juan County, Utah, USA. Scale: See Image. © Jeff Weissman / Photographic Guide to Mineral Species
Dietrichite: (Zn,Fe++,Mn)Al2(SO4)4·22(H2O)
Comments: Pale beige fibrous dietrichite. Location: Baia Sprie, Transylvania, Maramures, Romania. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Dietzeite: Ca2(IO3)2(CrO4)
Comments: Yellow crystalline coating of dietzeite on matrix. Location: Iquique, Tarapaca, Chile. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Dittmarite: (NH4)Mg(PO4)·(H2O) Newberyite: Mg(PO3OH)·3(H2O)
Comments: Translucent crystalline dittmaritewith more opaque newberyite. Location: Skipton Caves, Victoria, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Dixenite: Cu+Mn++14Fe+++(As+++O3)5(SiO4)2(As+++++O4)(OH)6
Comments: Deep red translucent crystalline grains of dixenite. Location: Langban, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Djerfisherite: K6Na(Fe,Cu,Ni)25S26Cl
Comments: Bronze metallic grains of djerfisherite in white feldspar. Location: Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Dmisteinbergite: CaAl2Si2O8 Wairakite: CaAl2Si4O12·2(H2O)
Comments: Pearly platy crystalline dmisteinbergite with dull white wairakite on matrix. Location: Kurumazawa, Katashina, Gumma, Japan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Doloresite: H8V++++6O16
Comments: black radiating doloresite and crystalline doloresite with white calcite. Location: Grants, Valencia County, New Mexico, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Domeykite: Cu3As
Comments: Metallic nugget of domeykite. Location: Cashin Mine, Montrose County, Colorado, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Donathite: (Fe++,Mg)(Cr,Fe+++)2O4
Comments: Black granular donathite on iron. Location: Hestmondo Island, Nordland, Norway. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Donbassite: Al2[Al2.33][Si3AlO10](OH)8
Comments: Translucent white crystalline donbassite. Location: Donetz Basin, Ukraine. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Donpeacorite: (Mn,Mg)MgSi2O6 Braunite-I: Mn++Mn+++6SiO12
Comments: Brown crystalline massive donpeacorite with dark brown black braunite. Location: Zinc Corporation of America Mine #4, Balmat, Saint Lawrence County, New York, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Donpeacorite: (Mn,Mg)MgSi2O6 Turneaureite: Ca5[(As,P)O4]3Cl Parvowinchite: Na(NaMn++)(Mg4Fe+++)Si8O22(OH)2
Comments: Colorless, transparent turneaureite masses with light brown tirodite (parvowinchite) and darker brown donpeacorite. Location: 2500' level of the mine, ZCA Mine No. 4 (St Joe Mine; ZCA No. 4 mine), Balmat, Balmat-Edwards Zinc District, St Lawrence Co., New York, USA. Scale: Picture Size 0.5 cm. © Jeff Weissman / Photographic Guide to Mineral Species