Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Lines	Spectra	Techniques	Tags
REE(III) hydroxide	REE^III(OH)₃	—	—		2	0	IR	Hydroxide , Compound
REE(III) oxyhydroxide	REE^IIIOOH	—	—		2	0	IR	Compound
Realgar	AsS	—	—	Realgar Realgar specimen from Royal Reward Mine, Green River Gorge, Franklin, King Co., WA, USA © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	2	0	PL, PL/XL	Mineral, Sulphide
Reidite	ZrSiO₄	Minerals containing SiO4, Zircon (group)	—		5	1	CL/SEM	Mineral, Silicate
Renardite	Pb(UO₂)₄(PO₄)₂(OH)₄·7H₂O	Minerals containing OH, Minerals containing PO4, Minerals containing H2O	—		4	0	PL	Hydroxide , Mineral, Orthophosphate , Phosphate , Uranyl , Hydrated
Rhenium	Re	—	—	Rhenium Elemental rhenium © (C) 2024 James St. John (via Wikimedia Commons). CC-BY-2.0	15	2	SXES	Metal , Element
Rhodium	Rh	—	—	Rhodium \Rhodium foil and wire. Image taken by User:Dschwen on January 12th 2006. © (C) 2006 Dschwen (via Wikimedia Commons). CC-BY-2.5	11	2	SXES	Mineral , Metal , Element
Rhodizite	KBe₄Al₄(B₁₁Be)O₂₈	—	—	Rhodizite Rhodizite (yellow, 1.7cm) with pink and dark green bicolor Tourmaline, from Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa Commune, Betafo District, Vakinankaratra Region, Antananarivo Province, Madagascar © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	6	0	PL/XL	Mineral
Rhodochrosite	MnCO₃	Minerals containing CO3, Calcite (group)	—	Rhodochrosite Rhodochrosite specimen from N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa © Photo by Chip Clark, via Smithsonian National Museum of Natural History	2	2	Reflectance	Carbonate , Mineral
Rhodonite	CaMn₄Si₅O₁₅	Rhodonite (group), Pyroxenoid	—	Rhodonite Rhodonite specimen from Conselheiro Lafaiete, Minas Gerais, Southeast Region, Brazil. Size: 8.4 x 5.2 x 2.8 cm. © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	1	3	Reflectance, SXES	Mineral, Silicate
Richterite	Na(NaCa)Mg₅Si₈O₂₂(OH)₂	Minerals containing OH, Richterite root name group	—	Richterite Richterite from Badakhshan (Badakshan; Badahsan) Province, Afghanistan. Size: 1.6 x 1.2 x 0.6 cm. © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	6	0	PL, PL/XL	Mineral, Silicate , Hydroxide
Rondorfite	Ca₈Mg(SiO₄)₄Cl₂	Minerals containing SiO4	—		4	0	PL	Mineral, Silicate
Rorisite	CaClF	—	—		1	0	Unknown	Mineral, Halide
Rubidium chloride	RbCl	—	—	Rubidium chloride Crystal structure of rubidium chloride © Image by Benjah-bmm27 (via Wikimedia Commons), Public Domain	1	0	Unknown	Halide , Synthetic , Compound
Ruby	Al₂O₃	Corundum	—	Ruby Ruby specimen from Tingsongkhla, Thailand © Photo by Chip Clark, via Smithsonian National Museum of Natural History	3	1	CL/SEM	Variety, Simple oxide