Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Lines	Spectra	Techniques	Tags
Olgite	(Ba,Sr)(Na,Sr,REE)₂Na(PO₄)₂	Minerals containing PO4	—	Olgite Very dark green crystals of the rare phosphate mineral olgite from the type locality in Karnasurt Mountain, Lovozero Massif, Kola Peninsula, Russian Federation Photo by David Hospital (via Wikimedia Commons), CC-BY-SA 4.0	3	0	PL, PL/XL	Mineral, Phosphate , Orthophosphate
Oligoclase	(Na,Ca)(Si,Al)₄O₈	Plagioclase	—	Oligoclase Photograph of Oligoclase (var. sunstone, NMNH G3273) from the National Gem Collection, showing golden sheen. Specimen from Tvedestrand, Aust-Agder, Norway Photo by Chip Clark, via Smithsonian National Museum of Natural History	14	1	EDS	Aluminosilicate , Variety
Olivine	(Mg,Fe^II)₂SiO₄	Nesosilicate	Peridot, Liebenbergite, Monticellite, Glaucochroite, Forsterite, Kirschsteinite, Laihunite, Calcio-olivine, Fayalite, Tephroite	Olivine Forsterite (var. peridot) olivine from St John's Island (Zagbargad), Red Sea, Egypt Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	3	0	Reflectance	Group , Silicate
Olympite	LiNa₅(PO₄)₂	Minerals containing PO4	—		1	0	PL	Mineral, Phosphate , Orthophosphate
Opal	SiO₂·nH₂O	Minerals containing H2O	—	Opal Dark Jubilee Opal specimen (318.44ct) from Coober Pedy, South Australia, Australia Photo by Chip Clark, via Smithsonian National Museum of Natural History	19	1	CL	Mineral, Hydrated
Orthoclase	KAlSi₃O₈	K feldspar	—	Orthoclase Orthoclase specimen (27x17cm), from Minas Gerais, Southeast Region, Brazil Photo by Didier Descouens (via Wikimedia Commons), CC-BY-SA 4.0	11	1	CL	Mineral, Aluminosilicate
Osmium	Os	—	—	Osmium Cluster of osmium crystals grown by chemical vapor transport Image courtesy www.periodictable.ru, via Wikimedia Commons. CC-BY-3.0	16	1	SXES	Mineral , Metal , Element
Otavite	CdCO₃	Calcite (group), Minerals containing CO3	—	Otavite Otavide crystals (white), from Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia Photo by Christian Rewitzer (via Wikimedia Commons), CC-BY-SA 3.0	1	0	Unknown	Carbonate , Mineral
Pabstite	BaSnSi₃O₉	Benitoite (group)	—	Pabstite Tan crystal aggregates of pabstite, from Pacific Cement Quarry, Santa Cruz, CA, USA. Ex. F. Bauer collection Photo (C) 2020 David Hospital (via Wikimedia Commons), CC-BY-SA 4.0	1	0	PL/UV	Mineral, Silicate
Palladium	Pd	—	—	Palladium Elemental palladium (C) 2024 James St. John (via Wikimedia Commons). CC-BY-2.0	11	3	SXES	Mineral , Metal , Element
Palygorskite	(Mg,Al)₂Si₄O₁₀(OH)·4H₂O	Minerals containing OH, Palygorskite (group), Minerals containing H2O	—	Palygorskite Palygorskite, from Attapulgus, Decatur Co., Georgia, USA Photo by Ken Larsen, Smithsonian Institution. CC0	1	0	Reflectance	Hydroxide , Mineral, Hydrated , Aluminosilicate
Paragonite	NaAl₂(Si₃Al)O₁₀(OH)₂	Mica, Minerals containing OH	Paragonite-2M1	Paragonite Paragonite with garnet Photo by Dave Dyet (via Wikimedia Commons). Public domain.	4	1	Reflectance	Hydroxide , Mineral, Aluminosilicate
Parakeldyshite	Na₂ZrSi₂O₇	—	—	Parakeldyshite White crystals of the rare mineral parakeldyshite from Bratthagen Quarries, Lågendalen, Hedrum, Larvik, Vestfold, Norway Photo by David Hospital (via Wikimedia Commons), CC-BY-SA 4.0	3	0	PL, PL/XL	Mineral, Silicate
Parauranophane	Ca(UO₂)₂(SiO₃OH)₂·5H₂O	Minerals containing OH, Uranophane (group), Minerals containing H2O	—	Parauranophane Uranophane-alpha (light yellow radiating spheres) and Uranophane-beta (dark yellow, fan-like, thick needles) on Granite from Miedzianka in Krkonoše near Janowice Wielkie in Poland (Width: 11.5 mm) Photo by F. Rohowski (via Wikimedia Commons), CC-BY-SA 3.0	4	0	PL	Hydroxide , Mineral, Silicate , Uranyl , Hydrated
Parsonsite	Pb₂(UO₂)(PO₄)₂	Minerals containing PO4	—	Parsonsite Specimen of parsonsite (brown) and torbernite (green), from Pinhal do Souto mine, Tragos, Chãs de Tavares, Mangualde, Viseu District, Portugal. Field of view is 4mm. Photo by Leon Hupperichs (via Wikimedia Commons), CC-BY-SA 3.0	6	0	PL	Mineral, Orthophosphate , Phosphate , Uranyl , Hydrated