Mineral Specimen Images (D)

Dachiardite-Ca: (Ca,Na2,K2)5Al10Si38O96·25(H2O)

Comments: Milky bladed aggregates of dachiardite-Ca with mordenite-Na in cavities in basalt.
Location: Cape Lookout Quarry, Tillamook Co., Oregon, USA. Scale: Specimen Size 2.5x4 cm.
© Diederik Visser

Dachiardite-Ca: (Ca,Na2,K2)5Al10Si38O96·25(H2O)

Comments: Milky bladed aggregates of dachiardite-Ca with mordenite-Na in cavities in basalt.
Location: Cape Lookout Quarry, Tillamook Co., Oregon, USA. Scale: Specimen Size 2.5x4 cm.
© Diederik Visser

Dachiardite-Na: (Na2,Ca,K2)4Al4Si20O48·13(H2O)

Comments: Orange flat radial crystals of dachiardite-Na to 2cm across on matrix.
Location: Alpe di Siusi, Bolzano, Trentino Alto Adige, Italy. Scale: Specimen size: 6x4x3cm.
© Tom Loomis / Dakota Matrix

Dachiardite-Na: (Na2,Ca,K2)4Al4Si20O48·13(H2O)

Comments: Orange flat radial crystals of dachiardite-Na to 2cm across on matrix.
Location: Alpe di Siusi, Bolzano, Trentino Alto Adige, Italy. Scale: Specimen size: 6x4x3cm.
© Tom Loomis / Dakota Matrix

Dadsonite: Pb21Sb23S55Cl

Comments: Gay metallic massive dadsonite.
Location: Wolfsberg, Harzgerode, Sachsen-Anhalt, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Dadsonite: Pb21Sb23S55Cl

Comments: Gay metallic massive dadsonite.
Location: Wolfsberg, Harzgerode, Sachsen-Anhalt, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Dalyite: K2ZrSi6O15  
Janhaugite: (Na,Ca)3(Mn++,Fe++)3(Ti++++,Zr,Nb)2Si4O15(OH,F,O)3

Comments: Tan crystalline dalyite (arrow) with reddish brown janhaugite.
Location: Gjerdingen, Nordmark, north of Oslo, Oslo, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Dalyite: K2ZrSi6O15  
Janhaugite: (Na,Ca)3(Mn++,Fe++)3(Ti++++,Zr,Nb)2Si4O15(OH,F,O)3

Comments: Tan crystalline dalyite (arrow) with reddish brown janhaugite.
Location: Gjerdingen, Nordmark, north of Oslo, Oslo, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Danalite: Fe++4Be3(SiO4)3S

Comments: Orange irregular gemmy danalite in matrix.
Location: Iron Mountain, Winston, New Mexico, USA. Scale: See Image.
© Rruff Database

Danalite: Fe++4Be3(SiO4)3S

Comments: Orange irregular gemmy danalite in matrix.
Location: Iron Mountain, Winston, New Mexico, USA. Scale: See Image.
© Rruff Database

Danburite: CaB2(SiO4)2

Comments: Very-fine, large, single transparent crystal of danburite with minor crystals of colorless calcite all around the base.
Location: Charcas, San Luis Potosi, Mexico. Scale: 4 x 2.5 x 9.5 cm.
© Dan Weinrich

Danburite: CaB2(SiO4)2

Comments: Very-fine, large, single transparent crystal of danburite with minor crystals of colorless calcite all around the base.
Location: Charcas, San Luis Potosi, Mexico. Scale: 4 x 2.5 x 9.5 cm.
© Dan Weinrich

Danielsite: (Cu,Ag)14HgS8

Comments: BSE image showing danielsite (D - light gray) and stromeyerite (S - slightly darker) occupy the center of the triangular area and are surrounded by chalcocite (C - black).The anglesite (A) is white.
Location: Pocket of primary sulfides in a quartz vein near Coppin Pool, Western Australia. (AmMin, v72:401). Scale: See Image.
© American Mineralogist

Danielsite: (Cu,Ag)14HgS8

Comments: BSE image showing danielsite (D - light gray) and stromeyerite (S - slightly darker) occupy the center of the triangular area and are surrounded by chalcocite (C - black).The anglesite (A) is white.
Location: Pocket of primary sulfides in a quartz vein near Coppin Pool, Western Australia. (AmMin, v72:401). Scale: See Image.
© American Mineralogist

Daomanite: CuPtAsS2

Comments: Magnification of the micro-aggregate (shown in inset), which consists of white sperrylite, unnamed Cu2(Ni,Co)Pt3S8 and a single daomanite (Dmn) grain, and displays the chain-like morphology. (CanMin, v42:455).
Location: Chromitite layer of the Mount Bol’shaya Varaka deposit, Imandra layered complex, Kola Peninsula, Russia. Scale: See Image.
© Canadian Mineralogist

Daomanite: CuPtAsS2

Comments: Magnification of the micro-aggregate (shown in inset), which consists of white sperrylite, unnamed Cu2(Ni,Co)Pt3S8 and a single daomanite (Dmn) grain, and displays the chain-like morphology. (CanMin, v42:455).
Location: Chromitite layer of the Mount Bol’shaya Varaka deposit, Imandra layered complex, Kola Peninsula, Russia. Scale: See Image.
© Canadian Mineralogist

Daqingshanite-(Ce): (Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x

Comments: B&W SEM image showing large grains of daqingshanite-(Ce) (light-grey) in carbonate matrix (dark-grey). Associated mineral is monazite-(Ce), which form small very bright grains, partialy replacing daqingshanite-(Ce).
Location: Nkumbwa Hill Carbonatite (Nkombwa Hill Carbonatite), Isoka, Isoka District, Muchinga Mts., Northern Province, Zambia. Scale: Scale Bar 500 µm.
© Pavel M. Kartashov

Daqingshanite-(Ce): (Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x

Comments: B&W SEM image showing large grains of daqingshanite-(Ce) (light-grey) in carbonate matrix (dark-grey). Associated mineral is monazite-(Ce), which form small very bright grains, partialy replacing daqingshanite-(Ce).
Location: Nkumbwa Hill Carbonatite (Nkombwa Hill Carbonatite), Isoka, Isoka District, Muchinga Mts., Northern Province, Zambia. Scale: Scale Bar 500 µm.
© Pavel M. Kartashov

Darapskite: Na3(SO4)(NO3)·(H2O)

Comments: White crystalline granular darapskite.
Location: Iquique, Tarapaca, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Darapskite: Na3(SO4)(NO3)·(H2O)

Comments: White crystalline granular darapskite.
Location: Iquique, Tarapaca, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species