Mineral Specimen Images (G)

Glushinskite: Mg(C2O4)·2(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

Glushinskite: Mg(C2O4)·2(H2O)

Comments: SEM photo of two large euhedral glushinskite crystals partially embedded in the dried, rotten saguaro matrix. (AmMin, 88:1883).
Location: Crystals associated with the remains of a saguaro, Carnegiea gigantea from south and west central Arizona. Scale: Scale bar 150 µ-m.
© American Mineralogist

Gmelinite-Ca: (Ca,Na2)Al2Si4O12·6(H2O)

Comments: Tanslucent, salmon-colored gmelinite-Ca crystals.
Location: Sarbaiskoe deposit (Sarbai; Sarbay Mine), Qostaney Oblysy (Kostanai [Kustany] Oblast'), Kazakhstan. Scale: Specimen Size 7.9 x 5.9 x 5.1 cm.
© Rob Lavinsky

Gmelinite-K: (K,Na,Ca)6(Al7Si17O48)·22(H2O)

Comments: Pink to reddish brown gmelinite-K crystals in a cavity in matrix.
Location: Fara Vicentino, Vicenza, Veneto, Italy. Scale: Not Given.
© Diederik Visser

Gmelinite-Na: (Na2,Ca)Al2Si4O12·6(H2O)

Comments: White crystalline aggregate of gmelinite.
Location: Antrim, Northern Ireland. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Gobbinsite: (Na2,Ca)2K2Al6Si10O32·12(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

Godovikovite: (NH4)(Al,Fe+++)(SO4)2

Comments: A porous aggregate of massive yellow godovikovite.
Location: Carola Mine, Freital, Dresden, Saxony, Germany. Scale: Specimen size 4.2 cm.
© Thomas Witzke / Abraxas-Verlag

Goedkenite: (Sr,Ca)2Al(PO4)2(OH)

Comments: Clear, pointed goedkenite crystals epitaxially overgrown on palermoite.
Location: Palermo #1 mine, North Groton, Grafton County, New Hampshire, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Goethite: Fe+++O(OH)

Comments: Stellate crystalline aggregates of acicular goethite crystals.
Location: Pribram, Bohemia, Czech Republic. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Goethite: Fe+++O(OH)  
Laubmannite: Fe++3Fe+++6(PO4)4(OH)12

Comments: Reddish brown goethite hosting radiating sprays of olive green laubmannite to 3 cm across.
Location: Buckeye Mountain, Polk County, Arkansas, USA. Scale: 10.5 x 7.5 cm.
© John Veevaert

Gold: Au  
Silver: Ag

Comments: Very well crystallized Electrum (Silver rich gold) on quartz. The analysis gave 31.47% silver.
Location: Verespatak (now Rosia Montana), Transylvania, Romania. Scale: 2.8 x 3.4 cm.
© Fabre Minerals

Gold: Au

Comments: Well crystallized bright metallic gold specimen.
Location: Red Ledge mine, Nevada Co., California. Scale: 3.5 x 6 cm in size.
© Dan Weinrich

Gold: Au  
Isomertieite: Pd11Sb2As2  
Arsenopalladinite: Pd8(As,Sb)3  
Bornite: Cu5FeS4

Comments: Light grayish grain of intimately intergrown isomertieite and arsenopalladinite (in the center of the picture), with pale yellow gold and brownish to violet bornite. Polished section (from microprobe analysis) in reflected light.
Location: Noril'sk, Putoran Mts, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia. Scale: Picture size 0.1 mm.
© Thomas Witzke / Abraxas-Verlag

Gold: Au  
Petzite: Ag3AuTe2

Comments: Dark, stubby petzite crystals with native gold on quartz.
Location: Rosia Montana (Verespatak), Transylvania, Romania. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Gold: Au

Comments: Two skeletal octahedral crystals of gold. Stereo pair images..
Location: Berezovsk Mine, Russia. Scale: Crystal size 1.1 cm.
© John Veevaert

Gold: Au  
Rucklidgeite: (Bi,Pb)3Te4

Comments: Polished section (PPL) image of sphalerite(sph)-chalcopyrite ore associated with hessite (he), rucklidgeite (rk), pyrite (py) and native gold (Au).
Location: Level 1070 m., Massive sulphide deposits of the Hanson-Flin Flon-Snow Lake, Manitoba, Saskatchewan, Canada. Scale: Picture Size 0,12 mm.
© National Resouces of Canada

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)2·4(H2O)  
Coquimbite: Fe+++2(SO4)3·9(H2O)  
Ferricopiapite: Fe+++2/3Fe+++4(SO4)6(OH)2·20(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