Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Lines	Spectra	Techniques	Tags
Chalcedony	SiO₂	Quartz	Onyx	Chalcedony Chalcedony specimen from El Paso, Texas. Size: 2 x 1.25" (5.5 cm x 3 cm). It contains trace amounts of the uranyl ion (uranium) which makes it fluoresce under short wave ultraviolet light. © Photo (C) 2009 Hadley Paul Garland (via Wikimedia Commons), CC-BY-SA 2.0	5	0	—	Variety, Simple oxide
Chalcocite	Cu₂S	—	—	Chalcocite Chalcocite specimen from Mammoth Mine, Mount Gordon, Gunpowder District, Mt Isa - Cloncurry area, Queensland, Australia. Size: 3.6 x 2.7 x 2.7 cm © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	2	0	—	Mineral, Sulphide
Chalcopyrite	CuFeS₂	—	—	Chalcopyrite Chalcopyrite specimen from Concepción del Oro, Zacatecas, Mexico © Photo by Ken Larsen, via Smithsonian National Museum of Natural History	0	1	SXES	Mineral, Sulphide
Chambersite	Mn₃B₇O₁₃Cl	Boracite (group)	—		0	0	—	Mineral, Borate , Halide
Chamosite	(Fe²⁺,Mg,Al,Fe³⁺)₆(Si,Al)₄O₁₀(OH,O)₈	Chlorite (group)	—		0	0	—	Mineral, Aluminosilicate , Hydroxide
Changesite-(Y)	(Ca₈Y)◻Fe^II(PO₄)₇	Merrillite (group)	—		0	0	—	Orthophosphate , Phosphate, Mineral
Chaoite	C	—	—		0	0	—	Mineral
Charoite	(K,Sr,Ba,Mn)_15-16(Ca,Na)₃₂[Si₇₀(O,OH)₁₈₀](OH,F)₄·nH₂O	—	—	Charoite Charoite specimen from Chara, Yakutsk, Yakutia-Sakha Republic, Russian Federation © Photo by Penland, via Smithsonian National Museum of Natural History	4	0	—	Mineral, Silicate , Hydroxide , Hydrated
Chayesite	KMg₄Fe^III[Si₁₂O₃₀]	Osumilite (group)	—		0	0	—	Mineral, Silicate
Chegemite	Ca₇(SiO₄)₃(OH)₂	Chegemite (subgroup)	—		0	0	—	Mineral, Hydroxide , Silicate
Chegemite (subgroup)	Ca_2nSi_nO_4n·Ca(OH,F)₂ n=2,3,4	Humite (group)	Edgrewite, Fluorchegemite, Reinhardbraunsite, Kumtyubeite, Chegemite, Hydroxyledgrewite		0	0	—	Silicate , Hydroxide , Subgroup, Halide
Cheralite	CaTh(PO₄)₂	Monazite (group)	—		0	0	—	Mineral, Orthophosphate , Phosphate
Chernikovite	(H₃O)(UO₂)(PO₄)·3H₂O	Meta-autunite (group)	—	Chernikovite Chernikovite with greenish Meta-Autunite, Rockelmann Quarry, Schwarzenberg, Schwarzenberg District, Erzgebirge, Germany © Photo (C) 2015 Weirdmeister (via Wikimedia Commons), CC-BY-SA 4.0	4	0	—	Uranyl , Mineral, Hydrated , Phosphate , Orthophosphate
Chernovite-(Y)	Y(AsO₄)	Xenotime (group)	—		0	0	—	Arsenate , Mineral
Chiolite	Na₅Al₃F₁₄	—	—		4	0	—	Mineral, Halide