Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Specimens	Lines	Spectra	Techniques	Tags
Acanthite	Ag₂S	Silver sulphide, Acanthite (group)	—	Acanthite Acanthite specimen from Arizpe, Sonora, Mexico Photo by Ken Larsen, via Smithsonian National Museum of Natural History	1	3	1	SXES	Mineral, Sulphide
Acanthite (group)	—	—	Cervelleite, Acanthite, Aguilarite		0	3	1	SXES	Group
Acmite	NaFe^IIISi₂O₆	Clinopyroxene	—		1	0	0	—	—
Actinolite	☐Ca₂(Mg_4.5-2.5Fe^II_0.5-2.5)Si₈O₂₂(OH)₂	Ferro-actinolite-Tremolite (series), Actinolite root name group, Minerals containing OH	—	Actinolite Actinolite specimen from White River, Wenatchee National Forest, WA, USA Photo by Penland, via Smithsonian National Museum of Natural History	7	2	4	Reflectance	Mineral, Silicate , Hydroxide
Actinolite root name group	◻Ca₂(Mg_0-4.5M^II_0.5-5)Si₈O₂₂(OH,F,Cl)₂, M=Fe^II,Mn^II	Calcium amphibole	Actinolite (var. fibrous), Actinolite, Ferro-actinolite		0	4	4	Reflectance	Silicate , Group , Hydroxide
Adamite	Zn₂(AsO₄)(OH)	Minerals containing AsO4, Olivenite (group), Minerals containing OH	—	Adamite Adamite on limonite, from Mina Ojuela, Mapimi, Durango, Mexico. Size: 6.6 x 4.8 x 4.2 cm Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	1	5	0	PL	Hydroxide , Mineral, Arsenate
Adularia	KAlSi₃O₈	K feldspar	—	Adularia Adularia specimen from San Gottardo, Ticino, Switzerland Photo by Smithsonian Photographic Services	2	27	3	CL/SEM, SXES	Aluminosilicate , Variety
Aegirine	NaFe^IIISi₂O₆	Clinopyroxene	—	Aegirine Aegirine crystals from Mt Malosa, Zomba District, Malawi. Size: 7.2 x 4.8 x 3.3 cm. Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	2	0	0	—	Mineral, Silicate
Afghanite	(Na,K)₂₂Ca₁₀(Si₂₄Al₂₄)O₉₆(SO₄)₆Cl₆	Minerals containing SO4, Calcrinite (group)	—	Afghanite Image of specimen 'Afghanite NMNH R19826-00' (Smithsonian Institution - National Mineral Collection) from Kokcha Valley, Kuran wa Munjan District, Badakhshan Province, Afghanistan Photo by Penland, Smithsonian Institution, Public Domain	0	13	0	PL	Mineral, Sulphate , Halide , Aluminosilicate
Afwillite	Ca₃[SiO₃(OH)]₂·2H₂O	Minerals containing OH, Minerals containing H2O	—	Afwillite 1.03 mm group of Afwillite crystals. Collection Domenico Preite photo Matteo Chinellato. From Campomorto Quarry, Pietra Massa Locality, Montalto di Castro, Viterbo Province, Latium, Italy (C) 2010 Matteo Chinellato (via Wikimedia Commons). CC-BY-SA-3.0	0	7	0	IR	Hydroxide , Mineral, Silicate , Hydrated
Agate	SiO₂	Quartz (var. microcrystalline)	Youngite	Agate Condor agate from the mountain range near San Rafael City, in Mendoza Province, Argentina. Photo by Luis de los Santos (via Wikimedia Commons), CC-BY-SA 3.0	0	3	6	CL	Variety, Simple oxide
Agrellite	NaCa₂Si₄O₁₀F	—	—	Agrellite Fluorescent agrellite, Museo di Storia Naturale (Florence) Photograph by Sailko (via Wikimedia Commons), CC-BY-SA 3.0	1	15	0	PL, PL/XL	Mineral, Silicate
Akaganeite	(Fe^III,Ni^II)₈(OH,O)₁₆Cl_1.25·nH₂O	Minerals containing OH, Minerals containing H2O	—		1	0	0	—	Mineral, Hydrated , Hydroxide
Al2SiO5 (group)	Al₂SiO₅	Nesosilicate	Sillimanite (subgroup), Kyanite, Andalusite (subgroup), Sillimanite		0	25	5	CL, CL/SEM, EDS	Group , Silicate
Albite	(Na,Ca)(Si,Al)₄O₈, NaAlSi₃O₈	Plagioclase, Alkali feldspar	—	Albite Image of specimen 'M 55940 Albite' (Museums Victoria) from Siberian Federal District, Russia Photo by Benjamin Healley, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)	41	77	11	CL, CL/SEM, EDS, Reflectance, SXES	Mineral, Aluminosilicate