Gallium oxyhydroxide GaOOH
—
—
4
0
IR
Hydroxide, Compound
Gallium phosphide GaP
—
—
Open
GaP wafer, one-side polished, S-doped n-type, sample length ~2 cm, thickness 0.430 mm
©
Photo by Materialscientist, CC BY-SA 4.0
1
0
CL/SEM
Compound, Synthetic
Garnet (FeII ,Mg)3 Al2 (SiO4 )3 , X 3 Z 2 (SiO4 )3 , X =Mg,Ca,Fe,Mn, Z =Al,Fe,Cr,V, Gd3 Ga5 O12 , (Ca,FeII )3 Al2 (SiO4 )3 , (FeII ,Mn,Ca)3 Al2 (SiO4 )3
Nesosilicate Pyrope , Goldmanite , Almandine , Uvarovite , Majorite , Menzerite-(Y) , Morimotoite , Spessartine , Grossular, Fe , Skiagite , Eringaite , Knorringite , Calderite , Momoiite , Andradite-Grossular (series)
Open
Garnet specimen from Idaho, USA
©
Photo by Chip Clark, via Smithsonian National Museum of Natural History
3
7
CL, EDS
Aluminosilicate , Silicate, Group
Gearksutite CaAlF4 (OH)·H2 O
Minerals containing H2O , Minerals containing OH —
Open
Gearksutite (white) on creedite (orange), from Navidad Mine, Abasolo, Rodeo, Municipio de Rodeo, Durango, Mexico
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
4
0
PL, PL/XL
Hydroxide , Mineral, Hydrated
Gehlenite Ca2 Al(SiAl)O7
Åkermanite-Gehlenite (series) —
Open
Sharp crystals of gehlenite to 6mm, from Monzoni Mts, Fassa Valley, Trento Province, Trentino-Alto Adige, Italy
©
Photo by Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
1
0
IR
Mineral, Aluminosilicate
Geikielite MgTiO3
—
—
Open
Geikielite from Maxwell quarry, Chelsea, Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canada
©
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
11
0
Raman
Mineral, Titanate
Germanium Ge
—
—
Open
12 grams pf polycrystalline germanium, 2x3 cm.
©
(C) 2009 Jurii (via Wikimedia Commons, and images-of-elements.com). CC-BY-3.0
6
2
SXES
Metal , Element
Gibbsite Al(OH)3
Minerals containing OH —
Open
Botryoidal aggregates of greenish-gray gibbsite, to 0.3 cm across. From Xianghualing Mine, Xianghualing Sn-polymetallic ore field, Linwu County, Chenzhou Prefecture, Hunan Province, China
©
(C) Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
11
0
IR, PL, Reflectance
Mineral, Hydroxide
Glass , SiO2
REE glass Tachylite , Melt
Open
1st century CE Julio-Claudian roman glass cup, signed by Ennion.
©
Public Domain image courtesy of The Metropolitan Museum of Art, New York, USA.
87
15
CL, CL/SEM
—
Glauberite Na2 Ca(SO4 )2
Minerals containing SO4 —
1
0
PL
Mineral, Sulphate
Glauconite (K,Na)(FeIII ,Al,Mg)2 (Si,Al)4 O10 (OH)2
Mica —
2
0
PL, PL/XL
Hydroxide , Mineral, Aluminosilicate , Informal
Goethite FeO(OH)
Diaspore (group) , Iron oxide/hydroxide , Minerals containing OH —
Open
Botryoidal Goethite from Siegerland, Germany. Gallery of Mineralogy and Geology of the French National Museum of Natural History in Paris.
©
Photo by Marie-Lan Taÿ Pamart (via Wikimedia Commons), CC-BY 4.0
10
0
IR, Reflectance
Mineral, Hydroxide
Gold Au
—
—
Open
The Bunyip gold nugget, from Loddon River flood plain, near Bridgewater, Victoria, Australia. Weight: 1.55 kilograms (50 ounces). Specimen M 34546, Museums Victoria
©
Photo by Frank Coffa, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)
17
3
SXES, TL
Mineral , Metal , Element
Graphite C
Carbon —
Open
©
Image courtesy of the US Geological Survey. Public domain.
0
2
SXES
Mineral
Greenockite CdS
Cadmium sulphide , Wurtzite (group) —
Open
Specimen of Greenockite (CdS) on Calcite (CaCO3), from Joplin, Jasper Co., Missouri, USA
©
Photo by Ken Larsen, Smithsonian Institution, CC0
2
0
IR, PL
Mineral, Sulphide
