Mineral Specimen Images (W)

Wollastonite-1A: CaSiO3  
Minehillite: (K,Na)2-3Ca28(Zn4Al4Si40)O112(OH)16  
Margarosanite: Pb(Ca,Mn++)2Si3O9

Comments: White pearly crystalline minehillite with white margarosanite and dark gray lead, in pale pink opaque wollastonite (distinguished by blue-white fluorescence).
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Wollastonite-2M: CaSiO3

Comments: Wollastonite-2M crystals.
Location: Monte Somma (Vesuvius), Campania, Italy. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Wolsendorfite: (Pb,Ba,Ca)U2O7·2(H2O)

Comments: Red orange druse of tabular wolsendorfite crystals.
Location: Shinkolobwe mine, Tantara, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Wonesite: (Na,K).5(Mg,Fe,Al)3(Si,Al)4O10(OH,F)2

Comments: Dark greenish black micaceous wonesite flake.
Location: Post Pond Volcanics, Wilmount Mountain, Mount Cube Quadrangle, Orange County, Vermont. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Woodhouseite: CaAl3(PO4)(SO4)(OH)6

Comments: Crystals of woodhouseite to 0.5 cm across on an exposed quartz vein.
Location: Champion Mine, Inyo County, California, USA. Scale: Picture size 2 cm.
© John Veevaert

Woodruffite: (Zn,Mn++)2Mn++++5O12·4(H2O)

Comments: Dull brown massive woodruffite with limonite.
Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Woodwardite: Cu4Al2(SO4)(OH)12·2-4(H2O)

Comments: Greenish-blue botryoidal crust of woodwardite.
Location: Green River Formation, Uintah Co., Utah, USA. Scale: Picture size 1.8 mm.
© Thomas Witzke / Abraxas-Verlag

Wooldridgeite: Na2CaCu++2(P2O7)2·10(H2O)

Comments: SEM image of crystalline aggregates of wooldridgeite showing rhombic dipyramidal forms, (MinMag, v63:13).
Location: Judkins Quarry, Nuneaton, Warwickshire, England. Scale: Scale Bar 100 µm.
© Mineralogical Magazine

Wroewolfeite: Cu4(SO4)(OH)6·2(H2O)

Comments: Blue, lath-shaped crystals of wroewolfeite on matrix.
Location: Lichtenberg Mine, Ronneburg U Deposit, Gera district, Thuringia, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Wulfenite: PbMoO4

Comments: Tabular crystal druse of brownish orange wulfenite on matrix.
Location: Ahumada mine, Los Lamentos, Chihuahua, Mexico. Scale: Crystal size 5-10 mm.
© Dave Barthelmy

Wulfenite: PbMoO4  
Mimetite: Pb5(AsO4)3Cl

Comments: Gemmy, pale yellow mimetite crystal with brownish-orange wulfenite. Former James and Dawn Minette Collection.
Location: Gem Pocket 1971, Tsumeb, Namibia. Scale: 2 x 1 x 1 cm.
© Rob Lavinsky

Wulfingite: Zn(OH)2

Comments: Colorless equant crystal of wülfingite.
Location: Richelsdorf Smelter, Süss, Richelsdorf District, Hesse, Germany. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Wupatkiite: (Co,Mg,Ni)Al2(SO4)4·22(H2O)

Comments: Pinkish yellow opaque wupatkiite microcrystal in sandstone.
Location: Cameroon, Coconino County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Wurtzite: (Zn,Fe)S  
Barite: BaSO4

Comments: Compact, dark, metallic crystals of wurtzite intermixed with galena crystals and white barite blades.
Location: Huanzala, Huanuco Dept., Peru. Scale: 5 x 4 x 2.5 cm.
© Isaias Casanova / IC Minerals

Wustite: FeO

Comments: Orange botryoidal wustite on green calcite.
Location: Zacatecas, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Wyartite: Ca3U++++(UO2)6(CO3)2(OH)18·3-5(H2O)  
Rutherfordine: UO2(CO3)

Comments: Brown, acicular wyartite crystals next to bright yellow rutherfordine tufts.
Location: Shinokolbwe mine, Tantara, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Wycheproofite: NaAlZr(PO4)2(OH)2·(H2O)

Comments: Pearly, orange-white crystal group of wycheproofite. This is the type specimen for the species by the discoverer, Bill Birch..
Location: A granite quarry near Wycheproof, northwestern Victoria, Australia.. Scale: Crystal size 5 mm tall.
© Bill Birch

Wyllieite: (Na,Ca,Mn++)(Mn++,Fe++)(Fe++,Fe+++,Mg)Al(PO4)3

Comments: Dark bluish-black massive wyllieite in pegmatite.
Location: Victory Mine, Custer, Custer County, South Dakota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species