Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Specimens	Lines	Spectra	Techniques	Tags
Chrysoberyl	BeAl₂O₄	—	—	Chrysoberyl Catalog number NMNH G10613, the 17.08-carat Whitney Alexandrite from the National Gem Collection at the Smithsonian Institution National Museum of Natural History in Washington, D.C. This composite image shows the dramatic color change for which alexandri Photo by Chip Clark (reprocessed by Kristen Quarles), Smithsonian Institution, Public Domain	0	6	0	PL	Mineral
Chrysocolla	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	Minerals containing OH, Minerals containing H2O	—	Chrysocolla Chrysocolla specimen from the Ray Mine, Dripping Spring Mts, Pinal County, Arizona, USA. Size: 9.3 x 7.4 x 5.5 cm. Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	5	0	0	—	Hydroxide , Mineral, Silicate , Hydrated
Chukhrovite-(Ce)	Ca₃CeAl₂(SO₄)F₁₃·12H₂O	Minerals containing H2O, Minerals containing SO4	—	Chukhrovite-(Ce) Very small single crystal of the extremely rare REE mineral chukhrovite-(Y) from the type locality and only one of the three known localities worldwide: Kara Oba, Karaganda Oblast, Kazakhstan. Photo by David Hospital, via Wikimedia Commons, CC-BY-SA-4.0	0	7	0	PL, PL/XL	Sulphate , Mineral , REE, Hydrated , Halide
Cinnabar	HgS	Mercury sulphide	—	Cinnabar Cinnabar on dolomite 2009 JJ Harrison (https://www.jjharrison.com.au/), CC-BY-SA-3.0	2	15	1	CL/SEM	Mineral, Sulphide
Clarkeite	(Na,Ca,Pb)(UO₂)O(OH)·0-1(H₂O)	Minerals containing OH, Minerals containing H2O	—		0	5	0	PL	Hydroxide , Mineral, Uranyl , Hydrated
Clay	—	—	Palygorskite (group), Mica, Chlorite (group), Talc, Pyrophyllite-Talc (group), Pyrophyllite, Kaolinite-Serpentine Group, Sepiolite (group), Mixed-layer clay mineral, Smectite (group), Vermiculite	Clay Image of Kaolinite Public domain	0	120	33	CL, EDS, Reflectance	Aluminosilicate , Group , Informal
Clino-suenoite	☐Mn^II₂Mg₅Si₈O₂₂(OH)₂	Minerals containing OH, Suenoite root name group	—		1	0	0	—	Mineral, Silicate , Hydroxide
Clinoamphibole	—	Amphibole	—		0	2	0	Reflectance	Variety, Informal
Clinoatacamite	Cu₂Cl(OH)₃	Minerals containing OH, Atacamite (group)	—		2	0	0	—	Mineral, Halide , Hydroxide
Clinochlore	(Mg,Fe^II)₅Al(AlSi₃O₁₀)(OH)₈, Mg₅Al(AlSi₃O₁₀)(OH)₈	Minerals containing OH, Chlorite (group)	—	Clinochlore Clinochlore specimen from Achmatowsk, Ural Mtns., Chelyabinsk Oblast, Russia Photo by Burton Litman, via Smithsonian National Museum of Natural History	22	3	0	PL/XL, Reflectance	Hydroxide , Mineral, Aluminosilicate
Clinochrysotile	Mg₃Si₂O₅(OH)₄	—	—	Clinochrysotile Chrysotile from Brazil Photo by Eurico Zimbres, Public Domain	0	2	0	PL	Hydroxide , Silicate
Clinoenstatite	Mg₂Si₂O₆	Clinopyroxene	—		3	0	0	—	Mineral, Silicate
Clinohedrite	CaZn(SiO₄)·H₂O	Minerals containing SiO4, Minerals containing H2O	—	Clinohedrite Combined white-light photograph with shortwave UV photoluminescence image of a specimen of clinohedrite (orange PL), hardystonite (blue PL) and willemite (green PL), from Franklin, NJ. Specimen size: 11cm Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.	1	0	0	—	Mineral, Silicate , Hydrated
Clinopyroxene	—	Pyroxene	Kushiroite, Davisite, Burnettite, Calcium aluminium silicate (var. Nd doped), Acmite, Johannsenite, Calcium aluminium silicate (var. Ce doped), Triphane, Ryabchikovite, Hedenbergite, Kosmochlor, Namansilite, Petedunnite, Clinoferrosilite, Jervisite, Esseneite, Pigeonite, Spodumene, Natalyite, Augite, Tissintite, Diopside, Jadeite, Grossmanite, Aegirine, Colomeraite, Kanoite, Clinoenstatite, Omphacite, Aegirine-augite, Diopside (var. synthetic)		0	82	13	CL, CL/SEM, EDS, Reflectance	Silicate , Subgroup
Cobalt	Co	—	—	Cobalt Specimen of metallic cobalt Photo by Benjah-bmm27 (via Wikimedia Commons), Public Domain	1	13	2	SXES	Metal , Element