Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Lines	Spectra	Techniques	Tags
Danburite	CaB₂Si₂O₈	—	—	Danburite Danburite specimen from Madagascar © Photo by Ken Larsen, via Smithsonian National Museum of Natural History	13	3	PL/Laser, Reflectance	Mineral, Borosilicate
Dark mica	—	Mica	—		3	0	Reflectance	Aluminosilicate , Informal
Datolite	CaB(SiO₄)(OH)	Minerals containing OH, Datolite (subgroup), Minerals containing SiO4	—	Datolite Datolite specimen from Prospect Park, Passaic Co., New Jersey, USA © Photo by Svea Lin Rodgers, via Smithsonian National Museum of Natural History	11	3	PL/Laser, Reflectance	Hydroxide , Mineral, Borosilicate
Delhayelite	K₇Na₃Ca₅Al₂Si₁₄O₃₈F₄Cl₂	—	—	Delhayelite Outstanding grey crystals of the rare mineral delhayelite from Rasvumtchorr, Khibiny, Kola, Russian Federation © Photo by David Hospital (on wikimedia.org), CC-BY-SA 4.0	9	0	PL, PL/XL	Mineral, Hydrated , Aluminosilicate
Diamond	C	Carbon	—	Diamond A rare blue diamond from India, in the Smithsonian National Museum of Natural History (G3551-00) © Photo by Chip Clark, via Smithsonian National Museum of Natural History	63	4	CL, CL/SEM, SXES	Mineral
Diaspore	AlO(OH)	Minerals containing OH, Diaspore (group)	—	Diaspore Diaspore from Selçuk, Muğla Province, Aegean Region, Turkey. This is a particularly robust and gemmy, twinned crystal. It is complete-all-around, and shows unusually well-developed, broad terminations. Ex. Bill Larson Collection. Joe Budd photo © Photo by Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	5	0	IR, PL/XL	Mineral, Hydroxide
Dioctahedral sheet silicate	—	—	—		2	0	Reflectance	Group , Silicate, Informal
Diopside	CaMgSi₂O₆, Ca(Mg,V)Si₂O₆	Clinopyroxene	—	Diopside Diopside specimen from De Kalb, De Kalb Township, St Lawrence County, New York, USA. Size: 4.3 x 3.3 x 1.9 cm. © 2010 Rob Lavinsky, iRocks.com, CC-BY-SA-3.0	21	2	Reflectance	Mineral, Silicate
Dolomite	CaMg(CO₃)₂	Minerals containing CO3, Dolomite (group)	—	Dolomite Dolomite specimen from Serra das Éguas, Brumado, Bahia, Northeast Region, Brazil © Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	30	2	CL, PL/Laser	Carbonate , Mineral
Dravite	NaMg₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	Minerals containing OH, Minerals containing BO3, Tourmaline	—	Dravite Specimen of dravite with muscovite from Yinnieharra Station, WA, Australia © Photo by Joel E. Arem, via Smithsonian National Museum of Natural History	0	1	Reflectance	Hydroxide , Mineral, Aluminosilicate , Borate
Dumortierite	Al(Al₂O)(Al₂O)₂(SiO₄)₃(BO₃)	Minerals containing BO3, Minerals containing SiO4	—	Dumortierite Dumortierite specimen from Rochester, Nevada, USA © Photo by NMNH Photo Services, Smithsonian National Museum of Natural History	4	0	PL, PL/XL	Mineral, Aluminosilicate , Borate
Dundasite	PbAl₂(CO₃)₂(OH)₄·H₂O	Minerals containing OH, Minerals containing CO3, Minerals containing H2O	—	Dundasite Dundasite, from Le Rocheux Mine, Theux, Verviers, Belgium. Field of view: 5 mm © Photo by Henk Smeets – tomeikminerals.com (via Wikimedia Commons). CC-BY-4.0	0	1	Reflectance	Carbonate , Hydroxide , Mineral, Hydrated
Dysprosium ultraphosphate	DyP₅O₁₄	REE ultraphosphate	—		5	2	CL/SEM, SXES	REE, Phosphate , Synthetic , Compound , Ultraphosphate