Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Lines	Spectra	Techniques	Tags
Wavellite	Al₃(PO₄)₂(OH)₃·5H₂O	Minerals containing H2O, Minerals containing PO4, Minerals containing OH	—	Wavellite Photograph of crystals of wavellite from Mount Ida, Arkansas © Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.	1	0	PL	Hydroxide , Mineral, Orthophosphate , Phosphate , Hydrated
Whewellite	Ca(C₂O₄)·H₂O	Minerals containing H2O	—	Whewellite Specimen of Whewellite from Burgk, Dresden, Saxony, Germany. Size: 1.2 x 1 x .2 cm © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	3	0	PL, PL/XL	Mineral , Hydrated , Organic
White mica	—	Mica	Illite, Sericite		5	0	Reflectance	Aluminosilicate , Informal
Willemite	Zn₂SiO₄, (Zn,Mn)₂SiO₄	Minerals containing SiO4, Phenakite (group)	—	Willemite Fluorescence image of willemite (green), from Sterling Hill, Ogdensburg, Franklin Mining District, Sussex County, New Jersey, USA. Size: 10.8 x 8.8 x 5.9 cm © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	8	4	CL/SEM, PL/Laser, Reflectance	Mineral, Silicate
Witherite	BaCO₃	Aragonite (group), Minerals containing CO3	—	Witherite Wittherite crystal with galena, from Brownley Hill Mine, Nenthead, Alston Moor District, North Pennines, Cumberland, Cumbria, England, UK. Size: 6 x 5.3 x 4 cm © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	20	2	CL/SEM, SXES	Carbonate , Mineral
Wolframite	(Fe,Mn)WO₄	—	—	Wolframite Wolframite specimen from Panasqueira, Covilhã, Castelo Branco District, Portugal. Size: 4.9 x 3.9 x 3.8 cm. © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	4	1	CL	Tungstate
Wollastonite	CaSiO₃	Wollastonite (group), Pyroxenoid	Wollastonite-1A, Wollastonite-2M	Wollastonite Fans of white wollastonite needle shaped crystals in bluish marble from Nezdice, Šumava, Czech Republic. Size 15 x 12 cm. © © Zbynek Burival / Mineralexpert.org / (CC-BY-SA-4.0)	18	3	CL/SEM, Reflectance, SXES	Mineral, Silicate
Wulfenite	PbMoO₄	Minerals containing Mo[VI]O4, Scheelite (group)	—	Wulfenite Wulfenite specimen from Red Cloud Mine, La Paz Co., AZ, USA © Photo by Chip Clark, via Smithsonian National Museum of Natural History	14	0	PL, Raman	Mineral, Molybdate
Wurtzite	ZnS	Zinc sulphide, Wurtzite (group)	Wurtzite-2H	Wurtzite Wurtzite specimen from Yaogangxian Mine, Yizhang County, Chenzhou Prefecture, Hunan Province, China. This piece features several highly lustrous, sharp, deep reddish-brown, platy hexagonal crystals measuring up to 11 mm associated with white Calcite. © Photo by Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	1	0	IR	Mineral, Sulphide
Xenotime-(Y)	YPO₄	Yttrium orthophosphate, Xenotime (group), REE phosphate, Minerals containing PO4	—	Xenotime-(Y) Xenotime with gold-coloured rutile inclusions, from Novo Horizonte, Bahia, Northeast Region, Brazil. Size: 2.8 x 1.6 x 1.5 cm © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	246	20	CL, CL/SEM, EDS, PL/Laser, Reflectance	Phosphate , Mineral , REE, Orthophosphate
Xonotlite	Ca₆Si₆O₁₇(OH)₂	Minerals containing OH	—	Xonotlite A beautiful specimen of ivory-colored velvety balls of xonotlite in large aggregates. The open" sphere in front shows the natural acicular crystals that make up each radiating aggregate. From Wessels Mine, Hotazel, Kalahari manganese fields, Northern Cap © Photo by Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	4	0	IR, PL	Hydroxide , Mineral, Silicate
YAG	Y₃Al₅O₁₂	—	—	YAG Synthetic yttrium aluminum garnet gemstone (YAG) © Photo by James St. John https://www.flickr.com/photos/47445767@N05/50817377922/), CC-BY 2.0	2	1	CL/SEM	REE, Synthetic , Compound
YAP	YAlO₃	Perovskite (structure)	—		6	2	CL/SEM	REE, Synthetic , Compound
Ytterbium orthophosphate	YbPO₄	REE phosphate	—		7	0	Raman	Orthophosphate , REE, Phosphate , Compound
Ytterbium ultraphosphate	YbP₅O₁₄	REE ultraphosphate	—		22	1	CL/SEM	REE, Phosphate , Synthetic , Compound , Ultraphosphate