Mineral Specimen Images (Z)

Zincowoodwardite: [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n]

Comments: Botryoidal zincowoodwardite. The bluish-green color is due to a copper content.
Location: Christiana Mine, Agios Konstantinos, Lavrion District, Attikí Prefecture, Greece. Scale: Picture size 10 mm.
© Thomas Witzke / Abraxas-Verlag

Zincowoodwardite-1T: [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)], x = 0.33, n . 0.96  
Zincowoodwardite-3R: [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)], 0.32 < x < 0.50, n = 0.59

Comments: Zincowoodwardite-1T and zincowoodwardite-3R spherical aggregates. Holotype specimen for both species.
Location: Kamariza mine, Hilarion Mine, Lavrion, Attikí Prefecture, Greece. Scale: Capsule length 3 cm.
© German Type Specimen Catalogue

Zincowoodwardite-3R: [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)], 0.32 < x < 0.50, n = 0.59  
Zincowoodwardite-1T: [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)], x = 0.33, n . 0.96

Comments: Zincowoodwardite-1T and zincowoodwardite-3R spherical aggregates. Holotype specimen for both species.
Location: Kamariza mine, Hilarion Mine, Lavrion, Attikí Prefecture, Greece. Scale: Capsule length 3 cm.
© German Type Specimen Catalogue

Zincrosasite: (Zn,Cu)2(CO3)(OH)2

Comments: Spherical zincrosasite aggregates on limonite.
Location: Kali Kafi Mine, Anarak District, Great Salt Desert, Esfahan, Iran. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Zincsilite: Zn3Si4O10(OH)2·4(H2O) (?)

Comments: Chalky massive zincsilite.
Location: Horado Mine, Horado Cho, Mugi Gun, Gifu, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Zinkenite: Pb9Sb22S42

Comments: Jackstraw zinkenite crystals. Individual crystals reach up to 2 cm in length.
Location: Monserrat Mine, Antequera, Oruro, Bolivia. Scale: 4.5 x 3.2 cm.
© John Veevaert

Zinkenite: Pb9Sb22S42  
Stannite: Cu2FeSnS4

Comments: Acicular crystals of zinkenite perched on a twinned, crystal of stannite.
Location: Mina San José, Oruro, Bolivia. Scale: 4 x 2.3 x 1.7 cm.
© Fabre Minerals

Zinnwaldite: KLiFe++Al(AlSi3)O10(F,OH)2

Comments: Zinnwaldite crystal section.
Location: Wig-Wam Creek, Jefferson County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Zippeite: K4(UO2)6(SO4)3(OH)10·4(H2O)

Comments: Sandstone with a 1.5 cm vein of black uraninite bisected with a 2mm vein of bright yellow zippeite.
Location: Jackpot Mine, Laguna Mining District, Cibole City, New Mexico. Scale: 4.8 cm high.
© Paul M. Schumacher

Zippeite: K4(UO2)6(SO4)3(OH)10·4(H2O)  
Uranopilite: [(UO2)6(SO4)O2(OH)6(H2O)6]·8(H2O)

Comments: Bright yellow uranopilite and reddish brown zippeite encrustations on uranium ore.
Location: Happy Jack Mine, White Canyon, Utah. Scale: 3 cm.
© John Veevaert

Zircon: ZrSiO4

Comments: Clear, crystalline zircon prism with pyramidal termination.
Location: Laacher See, Rhineland-Palatinate, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Zircon: ZrSiO4  
Perrierite-(Ce): (Ce,La,Ca)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22  
Pyrochlore: (Na,Ca)2Nb2O6(OH,F)  
Loparite-(Ce): (Ce,Na,Ca)2(Ti,Nb)2O6

Comments: Reddish black perrierite crystal, with orange-brown pyrochlore crystal, yellow-brown zircon, and grayish-black loparite.
Location: Buer, Bjorkedalen, Langesundfjord, Telemark, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Zircon: ZrSiO4

Comments: Deep red-wine colored, lustrous, internally bright zircon crystals in matrix.
Location: Thorfjord, Seiland, Alta, Norway. Scale: 13 x 10.5 x 9 cm.
© Rob Lavinsky

Zircon: ZrSiO4

Comments: Cathodoluminescence image of earth's oldest-known mineral (zircon grain - W74/2-36) with inset concordia plot showing the 4,404 billion year old region. Note the oscillatory zoning in the outer rim. Image by John W. Valley.
Location: Interlayered red quartzites and metaconglomerates, Jack Hills, Western Australia. Scale: See Image.
© University of Wisconsin

Zirconolite-2M: CaZrTi2O7

Comments: Brown needles of zirconolite-2M in quartz.
Location: In den Dellen, Mendig, Laacher See, Eifel, Germany. Scale: Not given.
© Diederik Visser

Zirconolite-3O: (Ca,Fe,Y,Th)2Fe(Ti,Nb)3Zr2O7

Comments: Brown needles of zirconolite-3O in quartz matrix.
Location: In den Dellen, Mendig, Laacher See, Eifel, Germany. Scale: Specimen Size < 1x1 cm.
© Diederik Visser

Zirconolite-3T: CaZrTi2O7

Comments: Dark brown platy hexagonal zirconolite=3Tcrystals on sanidine.
Location: Castellaccio di Petrignano near Vetrella, Lazio,Viterbo, Italy. Scale: Specimen Size 3x4 cm.
© Diederik Visser

Zircophyllite: K2(Na,Ca)(Mn,Fe++)7(Zr,Nb)2Si8O26(OH)4F

Comments: Brown fragment of zircophyllite showing lamellar habit.
Location: Desourdy Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Scale: See Image.
© Rruff Database

Zircosulfate: Zr(SO4)2·4(H2O)

Comments: Powdery zircosulfate aggregate.
Location: Korgeredaba Massif, Republic of Tuva, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Zirkelite: (Ca,Th,Ce)Zr(Ti,Nb)2O7

Comments: Sub-metallic zirkelite crystal aggregate.
Location: Jacupiranga Mine, Sao Paulo, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species