Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Specimens	Lines	Spectra	Techniques	Tags
Gadolinium oxide	Gd₂O₃	REE oxide	—		0	9	1	CL/SEM	REE, Simple oxide , Compound
Gadolinium ultraphosphate	GdP₅O₁₄	REE ultraphosphate	—		1	13	2	CL/SEM, SXES	REE, Phosphate , Synthetic , Compound , Ultraphosphate
Gagarinite-(Y)	NaCaYF₆	REE fluoride	—	Gagarinite-(Y) Brick-red sample of gagarinite-(Y), showing crystalline shape, embeded in cryolite and sugar fluoraluminates like thomsenolite or gearksutite, from Katugin, Chitinskaya Oblast', Transbaikalia, Eastern Siberia, Russian Federation Photo by Joan Rosell, from rosellminerals.com, CC-BY-SA 4.0	0	15	1	CL/SEM	Mineral , REE, Halide
Gahnite	ZnAl₂O₄	Spinel (subgroup)	—	Gahnite Gahnite specimen from Ben Murphy Mica-Beryl Mine, Scaggsville, Howard Co., MD, USA Photo by Ken Larsen, via Smithsonian National Museum of Natural History	0	1	0	PL/XL	Mineral
Galena	PbS	Lead sulphide, Galena (group)	—	Galena Galena on quartz, from Krushev dol deposit, Madan ore field, Rhodope Mts, Smolyan Oblast, Bulgaria. Size: 7.1 x 5.4 x 4.1 cm. Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	12	2	1	SXES	Mineral, Sulphide
Gallium arsenide	GaAs	—	—	Gallium arsenide A crystal of gallium arsenide (C) 2007 W. Oelen (via Wikimedia Commons). CC-BY-SA-3.0	2	2	3	SXES	Synthetic , Compound, Arsenide
Gallium nitride	GaN	—	—	Gallium nitride Monocrystal of gallium nitride Photo by Opto-p , Public Domain	0	7	0	CL/SEM	Synthetic , Compound, Nitride
Gallium orthophosphate	GaPO₄	—	—		0	2	0	PL/UV	Phosphate , Orthophosphate , Compound
Gallium oxyhydroxide	GaOOH	—	—		0	4	0	IR	Hydroxide, Compound
Gallium phosphide	GaP	—	—	Gallium phosphide 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	0	1	0	CL/SEM	Compound, Synthetic
Garnet	(Fe^II,Mn,Ca)₃Al₂(SiO₄)₃, (Ca,Fe^II)₃Al₂(SiO₄)₃, (Fe^II,Mg)₃Al₂(SiO₄)₃, X₃Z₂(SiO₄)₃, X=Mg,Ca,Fe,Mn, Z=Al,Fe,Cr,V	Nesosilicate	Knorringite, Majorite, Uvarovite, Eringaite, Spessartine, Pyrope, Andradite-Grossular (series), Goldmanite, Grossular, Fe, Morimotoite, Almandine, Calderite, Menzerite-(Y), Momoiite, Skiagite	Garnet Garnet specimen from Idaho, USA Photo by Chip Clark, via Smithsonian National Museum of Natural History	1	3	7	CL, EDS	Aluminosilicate , Silicate, Group
Garnierite	—	—	—		2	0	0	—	Informal
Gaspéite	NiCO₃	Minerals containing CO3, Calcite (group)	—		3	0	0	—	Carbonate , Mineral
Gearksutite	CaAlF₄(OH)·H₂O	Minerals containing OH, Minerals containing H2O	—	Gearksutite Gearksutite (white) on creedite (orange), from Navidad Mine, Abasolo, Rodeo, Municipio de Rodeo, Durango, Mexico Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	0	4	0	PL, PL/XL	Hydroxide , Mineral, Hydrated
Gehlenite	Ca₂Al(SiAl)O₇	Åkermanite-Gehlenite (series)	—	Gehlenite 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	0	1	0	IR	Mineral, Aluminosilicate