Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Specimens	Lines	Spectra	Techniques	Tags
Emerald	Be₃Al₂Si₆O₁₈	Beryl	—	Emerald Image of specimen 'M 36316 Beryl (Emerald)' (Museums Victoria) from Western Australia, Australia Photo by Sarah McCaffrey, Museums Victoria / CC BY (Licensed as Attribution 4.0 International)	0	4	0	PL	Aluminosilicate , Variety
Enstatite	Mg₂Si₂O₆, (Mg,Fe^II)₂Si₂O₆	Orthopyroxene	—	Enstatite Enstatite specimen from Tanzania Photo by Greg Polley, via Smithsonian National Museum of Natural History	10	5	0	IL, PL/XL, Reflectance, Unknown	Mineral, Silicate
Epididymite	Na₂Be₂Si₆O₁₅·H₂O	Minerals containing H2O	—	Epididymite Image of specimen 'M 38900 Epididymite' (Museums Victoria) from Narssârssuk pegmatite, Igaliko Complex, Kujalleq, Greenland, Denmark Photo by Frank Coffa, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)	0	3	0	IR	Mineral, Hydrated , Silicate
Epidote	Ca₂(Al₂Fe^III)[Si₂O₇][SiO₄]O(OH)	Minerals containing SiO4, Epidote (group)	Allanite-Epidote	Epidote Epidote crystals from Katsna Yama, Middle Urals, Russia. Field of view: 4.4mm Photo by Masha Milshina (via Wikimedia Commons), CC-BY 4.0	6	2	4	CL, EDS, Reflectance	Mineral, Aluminosilicate
Epistolite	(Na☐)Nb₂Na₃Ti(Si₂O₇)₂O₂(OH)₂(H₂O)₄	Minerals containing OH, Minerals containing H2O	—	Epistolite Colorless platy silky crystals of the very rare niobium mineral epistolite from the type locality in Greenland: Ilímaussaq, Narsaq, Kujalleq. Ex Vandenbroucke Museum collection from Waregem, Belgium. Photo by David Hospital, via Wikimedia Commons, CC-BY-SA-4.0	0	1	0	PL	Hydroxide , Mineral, Silicate , Hydrated
Epoxy	C₂₁H₂₅ClO₅	—	—		0	1	1	CL	Synthetic, Compound , Organic
Epsomite	Mg(SO₄)·7H₂O	Minerals containing SO4, Minerals containing H2O	—		0	1	0	PL	Mineral, Hydrated , Sulphate
Erbium ultraphosphate	ErP₅O₁₄	REE ultraphosphate	—		1	15	2	CL/SEM, SXES	REE, Phosphate , Synthetic , Compound , Ultraphosphate
Esperite	PbCa₂(ZnSiO₄)₃	Minerals containing SiO4	—	Esperite Esperite with seperite from Franklin, Sussex Co., NJ, USA Photo by Ken Larsen, via Smithsonian National Museum of Natural History	2	7	2	PL/Laser	Mineral, Silicate
Euclase	BeAlSiO₄(OH)	Minerals containing OH, Minerals containing SiO4	—	Euclase Euclase specimen from Gachalá, Guavió-Guatéque Mining District, Boyacá Department, Colombia Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	0	1	0	PL/XL	Hydroxide , Mineral, Aluminosilicate
Eucryptite	LiAlSiO₄	Minerals containing SiO4, Phenakite (group)	—	Eucryptite Eucryptite specimen from Branchville, Redding, Fairfield Co., CT, USA Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	5	8	2	CL/SEM, Reflectance	Mineral, Silicate
Eudialyte	Na₁₅Ca₆Fe₃Zr₃Si(Si₂₅O₇₃)(O,OH,H₂O)₃(Cl,OH)₂	Minerals containing OH, Minerals containing H2O	—	Eudialyte Eudialyte, from Kangerdluarssuk, near Nassaq, Southwest Greenland Photo courtesy the Smithsonian Institution. CC0	2	0	2	Reflectance	Hydroxide , Mineral, Hydrated , Silicate , Halide
Eudidymite	Na₂Be₂Si₆O₁₅·H₂O	Minerals containing H2O	—	Eudidymite A eudidymite fan" with dark green aegirine crystals, from Poudrette quarry, Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada - FOV 3.1 x 1.8 mm Photo by Modris Baum (via wikimedia.org), Public Domain	0	2	0	PL/XL	Mineral, Silicate , Hydrated
Europium fluoride	EuF₃	REE fluoride	—		1	9	1	CL/SEM	REE, Halide , Synthetic , Compound
Europium ultraphosphate	EuP₅O₁₄	REE ultraphosphate	—		1	15	2	CL/SEM, SXES	Phosphate , REE, Synthetic , Compound , Ultraphosphate