Diederik Visser's Image Gallery

Aksaite: MgB6O7(OH)6·2(H2O)

Comments: Gray-white massive aksaite fragment photographed through a capsule.
Location: Chelkar Salt dome, Ak-Say Valley, Kazakhstan. Scale: Not Given.
© Diederik Visser

Aksaite: MgB6O7(OH)6·2(H2O)

Comments: Gray-white massive aksaite fragment photographed through a capsule.
Location: Chelkar Salt dome, Ak-Say Valley, Kazakhstan. Scale: Not Given.
© Diederik Visser

Alarsite: AlAsO4

Comments: Small thread-like alarsite fragment held to sample peg by a drop of glue.
Location: Tolbachik Volcano, Main Fracture, North Breakthrough, Kamchatka Peninsula, Russia. Scale: Peg Size 2 mm.
© Diederik Visser

Alarsite: AlAsO4

Comments: Small thread-like alarsite fragment held to sample peg by a drop of glue.
Location: Tolbachik Volcano, Main Fracture, North Breakthrough, Kamchatka Peninsula, Russia. Scale: Peg Size 2 mm.
© Diederik Visser

Aleksite: PbBi2Te2S2 (?)

Comments: Gray, metallic aleskite grains in quartz with tellurobismuthite and Pb-bearing tetradymite.
Location: St. David's Mine, Bontddu, Dogellau, Gwynedd, Wales, UK. Scale: Specimen Size 2.5x4.5 cm.
© Diederik Visser

Aleksite: PbBi2Te2S2 (?)

Comments: Gray, metallic aleskite grains in quartz with tellurobismuthite and Pb-bearing tetradymite.
Location: St. David's Mine, Bontddu, Dogellau, Gwynedd, Wales, UK. Scale: Specimen Size 2.5x4.5 cm.
© Diederik Visser

Allanpringite: Fe3(PO4)2(OH)3·5H2O

Comments: Yellow crystals of allanpringite with cacoxenite and beraunite.
Location: Grube Mark, Essershausen, Weilburg, Taunus, Gerrmany. Scale: Picture size 1 cm.
© Diederik Visser

Allanpringite: Fe3(PO4)2(OH)3·5H2O

Comments: Yellow crystals of allanpringite with cacoxenite and beraunite.
Location: Grube Mark, Essershausen, Weilburg, Taunus, Gerrmany. Scale: Picture size 1 cm.
© Diederik Visser

Alum-(K): KAl(SO4)2·12(H2O)

Comments: White encrustations and ballshaped aggregates of potassium alum.
Location: Scholler mine, Libusin, Kladno, Czech Republic. Scale: See Fingers for Scale.
© Diederik Visser

Alum-(K): KAl(SO4)2·12(H2O)

Comments: White encrustations and ballshaped aggregates of potassium alum.
Location: Scholler mine, Libusin, Kladno, Czech Republic. Scale: See Fingers for Scale.
© Diederik Visser

Ancylite-(La): Sr(La,Ce)(CO3)2(OH)·(H2O)

Comments: Pale brown aggregates of ancylite-(La) crystals with some aegirine on matrix.
Location: Mt. Kukisvumchorr, Chibiny, Kola, Russia. Scale: Specimen Size 2.5x3.5 cm.
© Diederik Visser

Ancylite-(La): Sr(La,Ce)(CO3)2(OH)·(H2O)

Comments: Pale brown aggregates of ancylite-(La) crystals with some aegirine on matrix.
Location: Mt. Kukisvumchorr, Chibiny, Kola, Russia. Scale: Specimen Size 2.5x3.5 cm.
© Diederik Visser

Antarcticite: CaCl2·6(H2O)

Comments: White antarcticite crystals in sealed in mineral oil.
Location: Bristol Lake, Mojave Co.,California, USA. Scale: Sample Jar 6 cm.
© Diederik Visser

Antarcticite: CaCl2·6(H2O)

Comments: White antarcticite crystals in sealed in mineral oil.
Location: Bristol Lake, Mojave Co.,California, USA. Scale: Sample Jar 6 cm.
© Diederik Visser

Arsenoflorencite-(La): (La,Sr)Al3(AsO4,SO4,PO4)2(OH)6

Comments: BSE image of four grains of orange-red Arsenoflorencite-(La) from heavy concentrates of gold-bearing sedimentary rocks.
Location: Grubependity Lake, Maldinskii Region, Prepolar Ural, Russia. Scale: See Image.
© Diederik Visser

Arsenoflorencite-(La): (La,Sr)Al3(AsO4,SO4,PO4)2(OH)6

Comments: BSE image of four grains of orange-red Arsenoflorencite-(La) from heavy concentrates of gold-bearing sedimentary rocks.
Location: Grubependity Lake, Maldinskii Region, Prepolar Ural, Russia. Scale: See Image.
© Diederik Visser

Arsenuranospathite: HAl(UO2)4(AsO4)4·40(H2O)

Comments: Yellowgreen to brown arsenuranospathite crust on matrix.
Location: Elias Mine, Jachymov, Bohemia, Czech Republic. Scale: Specimen Size 2.1x2.7 cm.
© Diederik Visser

Arsenuranospathite: HAl(UO2)4(AsO4)4·40(H2O)

Comments: Yellowgreen to brown arsenuranospathite crust on matrix.
Location: Elias Mine, Jachymov, Bohemia, Czech Republic. Scale: Specimen Size 2.1x2.7 cm.
© Diederik Visser

Avdoninite: K2Cu5Cl8(OH)4·H2O

Comments: Aggregates of green avdoninite crystals.
Location: Blyava Cu Mine, Southern Urals, Russia. Scale: Specimen size 1.5 x 2 cm.
© Diederik Visser

Avdoninite: K2Cu5Cl8(OH)4·H2O

Comments: Aggregates of green avdoninite crystals.
Location: Blyava Cu Mine, Southern Urals, Russia. Scale: Specimen size 1.5 x 2 cm.
© Diederik Visser