's Image Gallery

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

Direnzoite: NaK6MgCa2(Al13Si47O120)·36H2O

Comments: SEM micrograph of direnzoite showing the internal radial fiberous structure of the nodule. (AmMin, v93:97.
Location: Massif Central (France). Scale: See Image.
© American Mineralogist

Dissakisite-(Ce): Ca(Ce,REE)(Mg,Fe++)(Al,Fe+++)2Si3O12(OH)  
Dolomite: CaMg(CO3)2

Comments: Small, prisimatic, acicular crystals of tan-colored dissakisite-(Ce) scatterd on white crystalline dolomite.
Location: Trimouns mine, Luzenac, Ariège France. Scale: Picture size 5 cm.
© Fabre Minerals

Dissakisite-(La): (Ca,Fe++,Th, La)(La,REE,Ca)(Al,Cr,Ti)2(Mg,Fe,Al)Si3O12(OH,F) with La > Ce

Comments: B&W macrophotograph of dissakisite-(La) from the as matrix constituents and Cr-rich spinel in a peridotite matrix. AmMin, v90 p 1178.
Location: Ulten zone, Eastern Alps, Italy. Scale: See Image.
© American Mineralogist

Dissakisite-(La): (Ca,Fe++,Th, La)(La,REE,Ca)(Al,Cr,Ti)2(Mg,Fe,Al)Si3O12(OH,F) with La > Ce

Comments: B&W thin section image showing radial cracks from dissakisite-(La) (dik) propagating into the surrounding olivine (ol). AmMin, v90 p 1178.
Location: Ulten zone, Eastern Alps, Italy. Scale: See image.
© American Mineralogist

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

Diversilite-(Ce): Na2(Ba,K)6Ce2Fe++Ti3Si12O36(OH)3(OH,H2O)9

Comments: Crude platy brown diversilite-(Ce) in matrix.
Location: Mt. Yukspor, Chibiny, Kola, Russia. Scale: Not Given.
© Diederik Visser

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