Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Lines	Spectra	Techniques	Tags
Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	Minerals containing OH	—	Prehnite Specimen of prehnite, from Goboboseb Mountain, Erongo Region, Namibia. Specimen M 53300, Museums Victoria © Photo by Rodney Start, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)	7	1	Reflectance	Hydroxide , Mineral, Aluminosilicate
Preobrazhenskite	Mg₃B₁₁O₁₅(OH)₉	Minerals containing OH	—	Preobrazhenskite Outstanding yellow very shiny microcrystals of the rare borate mineral preobrazhenskite from the type locality: Inder B Deposit, Atyrau, Atyrau Oblysy, Kazakhstan. © Photo by David Hospital (via Wikimedia Commons), CC-BY-SA-4.0	2	0	PL/XL	Mineral, Hydroxide
Priceite	Ca₂B₅O₇(OH)₅·H₂O	Minerals containing H2O, Minerals containing OH	—		1	0	PL	Hydroxide , Mineral, Hydrated , Borate
Prosopite	CaAl₂F₄(OH)₄	Minerals containing OH	—	Prosopite Lavender prosopite with green amazonite on one end and micro xls. of ralstonite & tomsenolite on the other end, from Morefield Pegmatite Mine; Amelia Co., Virginia, USA © Photo by Mark Joseph Wylie (via Wikimedia Commons), Public Domain	6	0	PL, PL/XL	Hydroxide , Mineral, Halide
Pyrite	FeS₂	Pyrite (group)	—	Pyrite Cubic crystals of pyrite (7.0 × 5.0 × 2.5 cm). Found from Huanzala mine, Huallanca, Bolognesi, Ancash, Peru © Photo by Ivar Leidus (via Wikimedia Commons), CC-BY-SA 4.0	3	2	CL, SXES	Mineral, Sulphide
Pyrochlore	(Ca,Na)₂Nb₂O₆(OH,F), (Na,Sr,Ca,Ce)₂Nb₂O₆(OH,F), (Sr,Na)₂Nb₂O₆(OH,F)	Pyrochlore (group)	Calciopyrochlore	Pyrochlore Pyrochlore crystals (brown), from Vishnovogorsk, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia. 7.7 x 5.8 x 3.0 cm © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	5	0	PL, PL/Laser	Hydroxide , Niobate
Pyromorphite	Pb₅(PO₄)₃Cl	Apatite (group), Minerals containing PO4	—	Pyromorphite Crystals of pyromorphite © Photo by Parent Géry, (via Wikimedia Commons), Public Domain	12	0	PL, PL/Laser	Mineral, Phosphate , Orthophosphate
Pyrope	Mg₃Al₂(SiO₄)₃	Minerals containing SiO4, Garnet	—	Pyrope Rhodolite garnets from the National Gem Collection © Photo by Chip Clark, via Smithsonian National Museum of Natural History	5	0	PL/Laser	Mineral, Aluminosilicate
Pyrophyllite	Al₂Si₄O₁₀(OH)₂	Clay, Minerals containing OH	—	Pyrophyllite Pyrophyllite specimen from Maricopa, Kern Co., CA, USA. © Photo by Chip Clark, Smithsonian Institution. CC0	3	0	PL, Reflectance	Hydroxide , Mineral, Aluminosilicate