Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Specimens	Lines	Spectra	Techniques	Tags
Topaz	Al₂SiO₄F₂	Minerals containing SiO4	—	Topaz Topaz with lepidolite specimen from Minas Gerais, Brazil Photo by Chip Clark, via Smithsonian National Museum of Natural History	2	13	1	Reflectance	Mineral, Aluminosilicate
Tourmaline	A(D₃)G₆(Si₆O₁₈)(BO₃)₃X₃Z	—	Tsilaisite, Fluor-tsilaisite, Oxy-dravite, Magnesio-foitite, Vanadio-oxy-dravite, Oxy-vanadium-dravite, Bosiite, Oxy-foitite, Maruyamaite, Alumino-oxy-rossmanite, Celleriite, Oxy-chromium-dravite, Darrellhenryite, Fluor-liddicoatite, Feruvite, Fluor-uvite, Fluor-schorl, Olenite, Elbaite, Fluor-buergerite, Uvite, Fluor-elbaite, Rossmanite, Schorl, Dutrowite, Fluor-dravite, Foitite, Chromium-dravite, Dravite, Princivalleite, Dravite-Schorl (series), Lucchesiite, Chromo-alumino-povondraite, Adachiite, Vanadio-oxy-chromium-dravite, Magnesio-lucchesiite, Oxy-schorl, Povondraite	Tourmaline Crystal of schorl (tourmaline) with muscovite, from granite quarry, 10 km south-south-west of Lake Boga, Victoria, Australia. Specimen M 30758, Museums Victoria Photo by Frank Coffa, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)	1	16	0	PL, PL/XL, Reflectance	Borate , Silicate, Group
Tremolite	☐Ca₂(Mg_5.0-4.5Fe^II_0.0-0.5)Si₈O₂₂(OH)₂	Ferro-actinolite-Tremolite (series), Tremolite root name group, Minerals containing OH	—	Tremolite Tremolite from Mt Ibity, Antananarivo Province, Madagascar Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	10	10	2	Reflectance	Mineral, Silicate , Hydroxide
Tridymite	SiO₂	Silica	—	Tridymite A common form of Tridymite, ultra thin colorless tabulars (image width: 1,1 mm) - Locality: Wannenköpfe, Ochtendung, Eifel region, Germany Photo by Fred Kruijen (via Wikimedia Commons), CC-BY-SA 3.0	1	2	1	CL	Mineral, Simple oxide
Trigodomeykite	Cu₃As	—	—		1	0	0	—	Mineral, Arsenide
Trioctahedral sheet silicate	—	—	Smectite, Fe		0	4	0	Reflectance	Group , Silicate, Informal
Triplite	Mn^II₂(PO₄)F	Minerals containing PO4	—	Triplite Triplite gem (2.6 ct) from Pakistan Photo by Greg Polley, via Smithsonian National Museum of Natural History	0	3	0	PL, PL/XL	Mineral, Phosphate , Orthophosphate
Triploidite	Mn^II₂(PO₄)(OH)	Minerals containing PO4, Minerals containing OH	—		1	0	0	—	Hydroxide , Mineral, Orthophosphate , Phosphate
Troilite	FeS	Pyrrhotite (group)	—		1	0	0	—	Mineral, Sulphide
Trona	Na₃(HCO₃)(CO₃)·2H₂O	Minerals containing CO3, Minerals containing HCO3, Minerals containing H2O	—	Trona Photograph of a specimen of trona from Owens Lake, Inyo County, California. Size: 12cm Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.	1	0	0	—	Carbonate , Mineral, Hydrated
Tugtupite	Na₄BeAlSi₄O₁₂Cl	Sodalite (group)	—	Tugtupite Luminescence of tugtupite under longwave UV illumination, from Tunulliarfik Fjord, IlÍmaussaq complex, Narsaq, Kujalleq, Greenland Photo by Géry PARENT (via Wikimedia Commons). CC-BY-SA 4.0	3	38	1	CL	Mineral, Aluminosilicate
Tuite	(Ca,Pb)₃(PO₄)₂, Ca₃(PO₄)₂	Minerals containing PO4	—		0	1	0	PL	Mineral, Orthophosphate , Phosphate
Tungsten	W	—	—	Tungsten 26 Volt, 240 Watt, gas-filled, coiled-coil tungsten filament, electric lamp. made by Siemens Brothers Ltd, England. Museums Victoria Collection item ST 29243 Photo by Taryn Ellis, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)	1	16	2	SXES	Mineral , Metal , Element
Turkestanite	(K,☐)(Ca,Na)₂ThSi₈O₂₀·nH₂O	Minerals containing H2O	—		0	2	0	PL	Mineral, Hydrated , Silicate
Turquoise	CuAl₆(PO₄)₄(OH)₈·4H₂O	Minerals containing PO4, Minerals containing H2O, Minerals containing OH	—	Turquoise Turquoise from La Mariquita Mine, Cuitaca, Municipio de Cananea, Sonora, Mexico. Size: 5.2 x 3.6 x 2.6 cm. Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	0	3	0	PL	Hydroxide , Mineral, Orthophosphate , Phosphate , Hydrated