Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Specimens	Lines	Spectra	Techniques	Tags
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	2	5	0	PL/Laser	Mineral, Aluminosilicate
Pyrophyllite	Al₂Si₄O₁₀(OH)₂	Minerals containing OH, Clay	—	Pyrophyllite Pyrophyllite specimen from Maricopa, Kern Co., CA, USA. Photo by Chip Clark, Smithsonian Institution. CC0	2	3	0	PL, Reflectance	Hydroxide , Mineral, Aluminosilicate
Pyroxene	ADSi₂O₆	—	Orthopyroxene, Clinopyroxene	Pyroxene Composition between endmembers enstatite - ferrosilite and diopside - hedenbergite. Pyroxenes with more than 50 mole percentage of Ca2Si2O6 do not exist in nature Image by Lina Jakaité (https://strike-dip.com/pyroxenes/), CC-BY-SA 4.0	3	87	14	CL, CL/SEM, EDS, Reflectance	Group , Silicate
Pyroxenoid	—	—	Rhodonite, Wollastonite, Pectolite, Bustamite		0	21	6	CL/SEM, Reflectance, SXES	Group
Pyroxmangite	Mn^IISiO₃	—	—	Pyroxmangite Image of a specimen of pyroxmangite (M 50567, Museums Victoria), from Broken Hill, New South Wales, Australia Photograph by Rodney Start, Museums Victoria, CC-BY	1	0	0	—	Mineral, Silicate
Pyrrhotite	Fe_1-xS	Pyrrhotite (group)	Pyrrhotite-5C, Pyrrhotite-4M	Pyrrhotite Pyrrhotite specimen from Eagle Mine, Michigan, USA. 4.5cm in size. Photo by Carlin Green, USGS, Public Domain	4	0	2	EDS	Mineral, Sulphide
Pyrrhotite-4M	Fe_1-xS	Pyrrhotite	—		4	0	0	—	Sulphide , Polytype
Pyrrhotite-5C	Fe_1-xS	Pyrrhotite	—		2	0	0	—	Sulphide , Polytype