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Gillulyite: Tl2(As,Sb)8S13
Comments: Dark red crystalline gillulyite in white calcite. Location: South Mercur Pit, Barrick Gold Mine, Mercur, Tooele County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Gilmarite: Cu3(AsO4)(OH)3
Comments: Scanning electron image of prismatic gilmarite crystals (Eur. J. Mineral, 11:549). Location: Roua deposit, Guillaumes municipality, about 50 km from Nice, France. Scale: Picture size 80 µm. © Eur. J. Mineral
Giniite: Fe++Fe+++4(PO4)4(OH)2·2(H2O)
Comments: Dark greenish black crystals of giniite on matrix. Location: Sandamab, Usakos, Namibia. Scale: Picture size 1.3 mm. © Thomas Witzke / Abraxas-Verlag
Ginorite: Ca2B14O23·8(H2O) Priceite: Ca2B5O7(OH)5·H2O
Comments: Clear platy crystalline coatings of ginorite on rock with white priceite. Location: Corkscrew Canyon, Death Valley, Inyo County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Giorgiosite: Mg5(CO3)4(OH)2·5(H2O)
Comments: Opaque white nodular giorgiosite. Location: Alphroessa, Santorini (Thira) Island, Notion Aiyalon, Greece. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Giraudite: (Cu,Zn,Ag)12(As,Sb)4(Se,S)13 Hakite: (Cu,Hg)3(Sb,As)(Se,S)3
Comments: Polished Section image of giraudite-hakite (gir-hak) with berzelianite (bzl ) and galena (gln). (CanMin, v40:1161). Location: Niederschlema-Alberoda uranium deposit, Erzgebirge, Germany. Scale: See Image. © Canadian Mineralogist
Girdite: Pb3H2(Te++++O3)(Te++++++O6)
Comments: White chalky crystalline spherical massive girdite in rock. Location: Grand Central Mine, Tombstone, Cochise County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Girvasite: NaCa2Mg3(PO4)2[PO2(OH)2](CO3)(OH)2·4(H2O)
Comments: Translucent aggregate of girvasite. Location: Kovdor Mine, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Gismondine: Ca2Al4Si4O16·9(H2O)
Comments: Clear crystal of gismondine on matrix. Location: Alban Hills, near Rome, Latium, Italy. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Gittinsite: CaZrSi2O7 Eudialyte: Na4(Ca,Ce)2(Fe++,Mn,Y)ZrSi8O22(OH,Cl)2 (?)
Comments: White crystalline gittinsite with red eudialyte. Location: Kipiwa Complex, Villedieu Township, Quebec, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species