Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Gjerdingenite-Mn: (K,Na)2(Mn,Fe)(Nb,Ti)4(Si4O12)2(O,OH)4ˇ6(H2O) Elpidite: Na2ZrSi6O15ˇ3(H2O)
Comments: Golden brown crystal of gjerdingenite-Mn, in white elpidite. Location: Gjerdingselva (Gjerdingen), Nordmarka, Lunner, Oppland, Norway. Scale: Crystal Size 0.02 cm. © Jeff Weissman / Photographic Guide to Mineral Species
Glauberite: Na2Ca(SO4)2
Comments: Translucent crystals of glauberite. Location: Superior, Pinal County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Glauberite: Na2Ca(SO4)2 Hydroglauberite: Na4Ca(SO4)3ˇ2(H2O)
Comments: Putty-colored chalky hydroglauberite on glauberite crystals. Location: Camp Verde, Yavapai County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Glaucocerinite: (Zn,Cu)5Al3(SO4)1.5(OH)16ˇ9(H2O)
Comments: Botryoidal crust of blue glaucocerinite. Location: Mina Serpieri, Laurium, Attiki, Greece. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Glaucochroite: CaMnSiO4 Zincite: (Zn,Mn)O Willemite: Zn2SiO4
Comments: Pinkish gray crystalline glaucochroite intermixed with pale green willemite, with dark red zincite and white calcite. Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Glauconite: (K,Na)(Fe+++,Al,Mg)2(Si,Al)4O10(OH)2
Comments: Green glauconite intermixed with quartz. Location: Ightham, Kent, England. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Glaucophane: [ ]Na2(Mg3Al2)Si8O22(OH)2
Comments: Pale violet to gray fibrous massive glaucophane. Location: Lac Malartic, Quebec, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Glaukosphaerite: (Cu,Ni)2(CO3)(OH)2
Comments: Green botryoidal crust of glaukosphaerite. Location: Carr-Boyd Nickel Mine, Western Australia, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Glucine: CaBe4(PO4)2(OH)4ˇ0.5(H2O) Moraesite: Be2(PO4)(OH)ˇ4(H2O)
Comments: Light brown glucine with white moraesite. Location: Boevskoye Mine, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Glushinskite: Mg(C2O4)ˇ2(H2O)
Comments: White coatings of glushinskite on dirty, tan gypsum. Location: San Simon, Cochise County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Gobbinsite: (Na2,Ca)2K2Al6Si10O32ˇ12(H2O)
Comments: White opaque crystalline gobbinsite in vug. Location: Island Magee, County, Antrim, Northern Ireland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Godlevskite: (Ni,Fe)9S8
Comments: Brassy metallic godlevskite grains in quartz.. Location: Moapa, Clark Co., Nevada, USA. Scale: Specimen Size 2 cm. © Jeff Weissman / Photographic Guide to Mineral Species
Goldfieldite: Cu12(Te,Sb,As)4S13
Comments: Back granular goldfieldite in white quartz. Location: Mohawk Mine, Goldfield, Esmeralda County, Nevada, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Goldichite: KFe+++(SO4)2ˇ4(H2O) Coquimbite: Fe+++2(SO4)3ˇ9(H2O) Ferricopiapite: Fe+++2/3Fe+++4(SO4)6(OH)2ˇ20(H2O)
Comments: Prismatic to fibrous crystals of goldichite on white massive coquimbite with yellow ferricopiapite. Location: Dexter No. 7 Mine, Calf Mesa, San Rafael Swell, Emery County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Goldmanite: Ca3(V,Al,Fe+++)2(SiO4)3
Comments: Dark gray granular goldmanite grains in sandstone. Location: Sandy Mine, Laguna, Cibola County, New Mexico, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Gonyerite: Mn++3[Mn++3Fe+++][(Si,Fe+++)4O10](OH,O)8
Comments: Brown massive gonyerite in manganese ore. Location: Harstigen, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Gorceixite: BaAl3(PO4)(PO3OH)(OH)6
Comments: Translucent platy crystals of gorceixite on tan siderite with white aragonite coatings. Location: Rapid Creek, Yukon, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Gorgeyite: K2Ca5(SO4)6ˇ(H2O)
Comments: görgeyite crystal prism. Location: Lake Inder, Atyrau, Kazakhstan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Goslarite: ZnSO4ˇ7(H2O)
Comments: Pale yellow to egg-shell white fibrous goslarite with radiating structure. Location: Rammelsberg, near Goslar, Harz Mountains, Niedersachsen, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Gowerite: CaB6O10ˇ5(H2O)
Comments: Coatings of acicular radiating crystal clusters of gowerite. Location: Furnace Creek, Death Valley, Inyo County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species