Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Lines	Spectra	Techniques	Tags
Epididymite	Na₂Be₂Si₆O₁₅·H₂O	Minerals containing H2O	—	Epididymite A superb and complete reticulated epididymite crystal. 1.5 x 1.5 x 0.8 cm. From Poudrette quarry, Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada Photo by Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	3	0	IR	Mineral, Hydrated , Silicate
Epidote	Ca₂(Al₂Fe^III)[Si₂O₇][SiO₄]O(OH)	Epidote (group), Minerals containing SiO4	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	4	5	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	1	0	PL	Hydroxide , Mineral, Silicate , Hydrated
Epoxy	C₂₁H₂₅ClO₅	—	—		1	1	CL	Synthetic, Compound , Organic
Epsomite	Mg(SO₄)·7H₂O	Minerals containing SO4, Minerals containing H2O	—		1	0	PL	Mineral, Hydrated , Sulphate
Erbium ultraphosphate	ErP₅O₁₄	REE ultraphosphate	—		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	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	1	0	PL/XL	Hydroxide , Mineral, Aluminosilicate
Eucryptite	LiAlSiO₄	Phenakite (group), Minerals containing SiO4	—	Eucryptite Eucryptite specimen from Branchville, Redding, Fairfield Co., CT, USA Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	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	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	2	0	PL/XL	Mineral, Silicate , Hydrated
Europium fluoride	EuF₃	REE fluoride	—		9	1	CL/SEM	REE, Halide , Synthetic , Compound
Europium ultraphosphate	EuP₅O₁₄	REE ultraphosphate	—		15	2	CL/SEM, SXES	Phosphate , REE, Synthetic , Compound , Ultraphosphate
Fedorite	(K,Na)_2.5(Ca,Na)₇Si₁₆O₃₈(OH,F)₂·3.5H₂O	Minerals containing OH, Minerals containing H2O	—	Fedorite Fibrous foliated, violet Charoite aggregation with black radiating Aegirine (Aegirine suns") and orange Fedorite crystals, from Vostochnyi Mine, Murun-Massif, Yakutia, Russia © Raimond Spekking / CC BY-SA 4.0 (via Wikimedia Commons)	4	0	PL, PL/XL	Hydroxide , Mineral, Silicate , Hydrated
Fedorovskite	Ca₂Mg₂B₄O₇(OH)₆	Minerals containing OH	—	Fedorovskite Outstanding brown crystals of the very rare mineral fedorovskite from the type locality in Buryatia (Solongo, Ozernoe Area, Buryatia Republic, Russian Federation). Ex.Dr.Hartel collection with label included Photo (C) 2019 David Hospital (via Wikimedia Commons), CC-BY-SA 4.0	2	0	PL/XL	Hydroxide , Mineral, Borate