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Warwickite: Mg(Ti,Fe+++,Al)(BO3)O Chondrodite: (Mg,Fe++)5(SiO4)2(F,OH)2
Comments: Black crystalline warwickite with tan chondrodite in white marble. Location: Amity, near Warwick, Orange County, New York, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Wattersite: Hg+4Hg++Cr++++++O6
Comments: Deep red-black resinous wattersite on quartz. Location: Clear Creek Mine, San Benito County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Wattevilleite: Na2Ca(SO4)2·4(H2O) (?)
Comments: White masses of wattervilleite scattered on lingite matrix. Label gives locality simply as Bischofsheim. Photographed under indirect natural light, hence the deep blue reflections and shadow areas. Location: Einigkeit Mine, Bauersberg Mt., Bischofsheim, Rhön Mts, Franconia, Bavaria, Germany. Scale: Field of view 0.25 cm. © Jeff Weissman / Photographic Guide to Mineral Species
Waylandite: BiAl3(PO4)2(OH)6 Bismite: Bi2O3
Comments: Gray massive stream rounded waylandite with tan bismite crusts. Location: Mumba, Nord-Kivu, Zaire. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Weberite: Na2MgAlF7 Cryolite: Na3AlF6
Comments: Gray weberite masses in white cryolite. Location: Ivigtut, Greenland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Weddellite: Ca(C2O4)·2(H2O)
Comments: Tan prismatic weddellite crystal sprays in vug. Location: Near Biggs, Wasco County, Oregon, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Wegscheiderite: Na5(CO3)(HCO3)3
Comments: Greasy pale pink translucent platy crystalline wegscheiderite in syenite rock. Location: Mount Alluaiv, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Weissite: Cu1.9Te
Comments: Metallic, irregular masses of weissite in quartz, with green malachite. Location: Winston, Sierra Co., New Mexico, USA. Scale: Picture Size 2.5 mm. © Jeff Weissman / Photographic Guide to Mineral Species
Wenkite: Ba4Ca6(Si,Al)20O39(OH)2(SO4)3·n(H2O) (?)
Comments: Translucent nearly colorless wenkite crystal in vug. Location: Garpenberg Mine, Kopparberg, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Westerveldite: (Fe,Ni,Co)As
Comments: Silvery metallic westerveldite grains in syenite rock. Location: Ilimaussaq, Greenland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species