Mineral Specimen Images (D)

Diaspore: AlO(OH)

Comments: Crystals of deep violet-colored diaspore exposed from numerous vugs.
Location: Saga Quarry, Oslo Region Norway. Scale: Crystal size 1 cm.
© John Veevaert

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  
Ankerite: Ca(Fe++,Mg,Mn)(CO3)2  
Sphalerite: (Zn,Fe)S

Comments: White, rhombohedral crystals of ankerite and dark gray, metallic sphalerite on beige dickite.
Location: Prego mine, Kladno, Czech Rebublic. Scale: Picture size 2 cm.
© Dave Barthelmy

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: Yellowish white, prismatic crystals of dickthomssenite on matrix.
Location: Firefly-Pigmay Mine, La Sal Quadrangle, San Juan Co., Utah, USA. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Dickthomssenite: Mg(V+++++2O6)·7(H2O)

Comments: Yellowish prismatic-looking, radial aggregates of dickthomssenite forming "balls" to 2mm on matrix.
Location: Firefly-Pigmy mine, San Juan Co., Utah, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

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

Dienerite: Ni3As  
Nickelskutterudite: (Ni,Co)As3-x

Comments: Aggregate of silver-gray nickelskutterudite cubes, some tarnished to a brassy color. Dienerite is now considered to be nickelskutterudite.
Location: Hasserode, Harz, Germany. Scale: See Image.
© Rruff Database

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

Digenite: Cu9S5

Comments: Bluish trigonal crystal of Digenite.
Location: Butte, Silver Bow County, Montana, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Dilithium: Li2Te

Comments: Reaction chamber image at warp-factor-2 showng synthetic dilithium (Di) crystal converting matter-antimatter streams to high energy plasma.
Location: Engine room, U.S.S. Enterprise NCC-1701-D, classified location in the gamma quadrant. Scale: Cyastal size 5 x 2 x 6 cm.
© LeVar Burton

Dimorphite: As4S3

Comments: Orange to yellow-orange crystals of dimorphite on matrix.
Location: Solfatara di Pozzuoli, Vesuvius, Naples, Naples province, Campania, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Diopside: CaMgSi2O6  
Grossular: Ca3Al2(SiO4)3

Comments: Pale blue prismatic crystal of diopside with orange-brown grossular.
Location: Val d'Aosta, Italy. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Diopside: CaMgSi2O6  
Magnesioferrite: MgFe+++2O4

Comments: Very dark brown Magnesioferrite Pleonaste (Iron-Magnesium spinel) with cream colored Calcite and gray green diopside.
Location: Aldan, Gon River, Russia. Scale: 6 x 4.5 cm.
© Fabre Minerals

Dioptase: CuSiO2(OH)2

Comments: Dark-blue-green crystals of dioptase on matrix. The color of dioptase does not photograph well and must be seen in person to appreciate.
Location: Altyn-tyube, Kasakhstan. Scale: Crystal size 5 mm.
© Dave Barthelmy

Dioptase: CuSiO2(OH)2

Comments: Emerald green lustrous crystals of dioptase to 14 mm in size and doubly terminated, set upon a limestone and massive calcite matrix.
Location: Altyn-Tyube, South Kazakhstan Oblast', Kazakhstan. Scale: 3.5 x 4.5 x 2 cm.
© Dan Weinrich

Dioptase: CuSiO2(OH)2  
Minrecordite: CaZn(CO3)2

Comments: Blue-green dioptase covered with minute, rhombic crystals of transparent minrecordite one mm or less in size.
Location: Tsumeb Mine, Tsumeb, Namibia. Scale: Picture size 1 cm.
© John Veevaert

Dioptase: CuSiO2(OH)2  
Kinoite: Ca2Cu2Si3O8(OH)4

Comments: Fibrous crystals of blue-green dioptase to 0.75mm on clear apophyllite associated with dark blue kinoite.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Pictures size 6 mm.
© Tom Loomis / Dakota Matrix

Direnzoite: NaK6MgCa2(Al13Si47O120)·36H2O

Comments: A fragment of the original piece of xenolith that containes direnzoite specimen. AmMin v93:96.
Location: Massif Central (France). Scale: Sample size 4 cm.
© American Mineralogist