Mineral Specimen Images (D)

Mineral Specimen Images (D)
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Mineral Specimen Images (D) With 272 Images

Delindeite Image

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Delindeite: Ba2(Na,K,[ ])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2

Comments: pale pink acicular crystal sprays of delindeite on matrix.
Location: Diamond Jo Quarry, Hot Spring County, Arkansas, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Delindeite Image

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Delindeite: Ba2(Na,K,[ ])3(Ti,Fe)[Ti2(O,OH)4Si4O14](H2O,OH)2

Comments: pale pink acicular crystal sprays of delindeite on matrix.
Location: Diamond Jo Quarry, Hot Spring County, Arkansas, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Dellaite Image

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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

Dellaite Image

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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

Dellaventuraite Image

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Dellaventuraite: NaNa2(Mg2,Mn+++,Li,Ti)Si8O22O2  
Aegirine-augite: (Ca,Na)(Mg,Fe++,Fe+++)[Si2O6]

Comments: View in plane-polarized light of reddish brown dellaventuraite (OPTK) as an overgrowth on purple-gray aegirine-augite (AE-AG) in a matrix of rounded quartz (QZ) with minor rounded (high relief) apatite grains. (AmMin 90:306).
Location: Kajlidongri manganese mine, Jhabua District, Madhya Pradesh, India. Scale: Picture size 2.5 cm.
© American Mineralogist

Dellaventuraite Image

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Dellaventuraite: NaNa2(Mg2,Mn+++,Li,Ti)Si8O22O2  
Aegirine-augite: (Ca,Na)(Mg,Fe++,Fe+++)[Si2O6]

Comments: View in plane-polarized light of reddish brown dellaventuraite (OPTK) as an overgrowth on purple-gray aegirine-augite (AE-AG) in a matrix of rounded quartz (QZ) with minor rounded (high relief) apatite grains. (AmMin 90:306).
Location: Kajlidongri manganese mine, Jhabua District, Madhya Pradesh, India. Scale: Picture size 2.5 cm.
© American Mineralogist

Deloneite-(Ce) Image

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Deloneite-(Ce): NaCa2SrCe(PO4)3F

Comments: Pale yellow deloneite-(Ce) in matrix.
Location: Koashva Mt., Chibiny, Kola, Russia. Scale: Specimen Size 1.5x2.5 cm.
© Diederik Visser

Deloneite-(Ce) Image

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Deloneite-(Ce): NaCa2SrCe(PO4)3F

Comments: Pale yellow deloneite-(Ce) in matrix.
Location: Koashva Mt., Chibiny, Kola, Russia. Scale: Specimen Size 1.5x2.5 cm.
© Diederik Visser

Delrioite Image

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Delrioite: CaSrV2O6(OH)2·3(H2O)  
Metadelrioite: CaSrV2O6(OH)2·(H2O)

Comments: Yellow metadelrioite and delrioite, with orange rossite/metarossite on a sandstone matrix. See inset image.
Location: Jo Dandy Mine, Montrose CO., USA. Scale: 6 1/4" x 5 1/2".
© Chris Wright / Wrights Rock Shop

Delrioite Image

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Delrioite: CaSrV2O6(OH)2·3(H2O)  
Metadelrioite: CaSrV2O6(OH)2·(H2O)

Comments: Yellow metadelrioite and delrioite, with orange rossite/metarossite on a sandstone matrix. See inset image.
Location: Jo Dandy Mine, Montrose CO., USA. Scale: 6 1/4" x 5 1/2".
© Chris Wright / Wrights Rock Shop

Delvauxite Image

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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

Delvauxite Image

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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

Demartinite Image

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Demartinite: K2[SiF6]

Comments: SEM image of a tapering, hexagonal demartinite crystal. (CanMin, v45:1275).
Location: La Fossa crater, Vulcano, Eolian Islands, Italy.. Scale: See Image.
© Canadian Mineralogist

Demartinite Image

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Demartinite: K2[SiF6]

Comments: SEM image of a tapering, hexagonal demartinite crystal. (CanMin, v45:1275).
Location: La Fossa crater, Vulcano, Eolian Islands, Italy.. Scale: See Image.
© Canadian Mineralogist

Demesmaekerite Image

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Demesmaekerite: Pb2Cu5(UO2)2(SeO3)6(OH)6·2(H2O)  
Malachite: Cu2(CO3)(OH)2

Comments: Pale green crystals of demesmaekerite on dark green malachite.
Location: Musonoi Mine, Katanga, Democratic Republic of the Congo. Scale: Crystal Size 3mm.
© John Veevaert

Demesmaekerite Image

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Demesmaekerite: Pb2Cu5(UO2)2(SeO3)6(OH)6·2(H2O)  
Malachite: Cu2(CO3)(OH)2

Comments: Pale green crystals of demesmaekerite on dark green malachite.
Location: Musonoi Mine, Katanga, Democratic Republic of the Congo. Scale: Crystal Size 3mm.
© John Veevaert

Demesmaekerite Image

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Demesmaekerite: Pb2Cu5(UO2)2(SeO3)6(OH)6·2(H2O)

Comments: Tabular, light green and spear-shaped dark greenish brown demesmaekerite crystals.
Location: Musonoi mine, Kolwezi, Shaba (Katanga), Congo (Zaïre). Scale: Picture size 3 mm.
© Paul M. Schumacher

Demesmaekerite Image

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Demesmaekerite: Pb2Cu5(UO2)2(SeO3)6(OH)6·2(H2O)

Comments: Tabular, light green and spear-shaped dark greenish brown demesmaekerite crystals.
Location: Musonoi mine, Kolwezi, Shaba (Katanga), Congo (Zaïre). Scale: Picture size 3 mm.
© Paul M. Schumacher

Demicheleite-(Br) Image

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Demicheleite-(Br): BiSBr

Comments: (SEM) image (BSE) of demicheleite. (AmMin, v93:1603).
Location: La Fossa crater, Vulcano, Aeolian Islands, Italy. Scale: See Image.
© American Mineralogist

Demicheleite-(Br) Image

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Demicheleite-(Br): BiSBr

Comments: (SEM) image (BSE) of demicheleite. (AmMin, v93:1603).
Location: La Fossa crater, Vulcano, Aeolian Islands, Italy. Scale: See Image.
© American Mineralogist
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