Material Index for the Spectroscopy Database

Material Index

Name	Formula	Classifications	Members	Image	Specimens	Lines	Spectra	Techniques	Tags
Halloysite	Al₂Si₂O₅(OH)₄	Kaolinite (subgroup), Minerals containing OH	—	Halloysite Image of Kaolinite, Albite, Halloysite (var. hkl), Illite-Smectite 12.0A, Montmorillonite, Orthoclase and Quartz in specimen 'API13 Halloysite' [CSIRO]. (C) 2025 CSIRO Mineral Resources. All rights reserved.	2	1	0	PL	Hydroxide , Mineral, Aluminosilicate
Halurgite	Mg₄[B₈O₁₃(OH)₂]₂·7H₂O	Minerals containing H2O, Minerals containing OH	—	Halurgite White globular aggregate of the very rare Mg borate halurgite from the type and only known locality worldwide: Chelkar Salt Dome, Aksai Valley, Shalkar, Aktobe Province, Kazakhstan. Ex Vandenbroucke Museum collection from Waregem, Belgium. Photo by David Hospital, via Wikimedia Commons, CC-BY-SA-4.0	0	3	0	PL/XL	Hydroxide , Mineral, Hydrated , Borate
Hambergite	Be₂(BO₃)(OH), Be₂(BO₃)(OH,F)	Minerals containing OH, Minerals containing BO3	—	Hambergite Tabular, terminated crystal from the Gem Hill, Mesa Grande District, San Diego County, California Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	1	2	0	PL/XL	Hydroxide , Mineral, Borate
Hanksite	KNa₂₂(SO₄)₉(CO₃)₂Cl	Minerals containing CO3, Minerals containing SO4	—	Hanksite Photograph of hanksite specimen from Boron, CA. Size: 4cm Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.	1	1	0	PL	Carbonate , Mineral, Sulphate
Hardystonite	Ca₂ZnSi₂O₇	—	—	Hardystonite UV fluorescence image of hardystonite (blue), with clinohedrite (orange), calcite (red), and willemite (green), from Franklin, Sussex Co., New Jersey, USA Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	1	7	4	PL/Laser	Mineral, Silicate
Harkerite	Ca₄₈Mg₁₆[AlSi₄O₁₅(OH)]₄(BO₃)₁₆(CO₃)₁₆·2(H₂O,HCl)	Minerals containing H2O, Minerals containing OH, Minerals containing BO3, Minerals containing CO3	—		0	2	0	PL/XL	Hydroxide , Mineral, Hydrated , Aluminosilicate , Borate , Carbonate
Hausmannite	Mn^IIMn^III₂O₄	Spinel (subgroup)	—	Hausmannite Hausmannite from Wessels Mine, Kalahari manganese fields, Northern Cape Province, South Africa Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	0	1	0	PL	Mineral
Haüyne	Na₃Ca(Si₃Al₃)O₁₂(SO₄)	Sodalite (group), Minerals containing SO4	—	Haüyne Crystals of Haüyne (1mm), from In den Dellen quarries, Niedermendig, Mendig, Laach lake volcanic complex, Eifel Mts, Rhineland-Palatinate, Germany Photo (C) 2008 Lucien Cluzaud (via Wikimedia Commons), Public Domain	0	10	0	PL	Mineral, Sulphate , Aluminosilicate
Heazlewoodite	Ni₃S₂	Nickel sulphide (var. Ni3S2)	—	Heazlewoodite Heazelwoodite specimen from Norilsk, Krasnoyarsk, Siberia, Russia (C) 2024 HolDu (via Wikimedia Commons). CC-BY-SA-3.0 DE	1	0	1	SXES	Mineral, Sulphide
Hectorite	Na_0.3(Mg,Li)₃Si₄O₁₀(F,OH)₂·nH₂O	Minerals containing H2O, Smectite (group)	—		1	0	0	—	Mineral, Silicate , Hydrated
Hedenbergite	CaFeSi₂O₆, CaFe^IISi₂O₆	Clinopyroxene	—	Hedenbergite Hedenbergite from the world famous deposits of Dal’negorsk, in the Russian far east. The diverging spray of variegated green, well terminated, and lustrous crystals to 9 cm (showing individual unobstructed faces to 6 cm), is occasionally dotted with round Photo by Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	5	0	0	—	Mineral, Silicate
Helvite	Mn₄Be₃(SiO₄)₃S	—	—	Helvite 12 mm crystal of Helvite (orange) in matrix of feldspar (pink) with microcrystals of muscovite (green), from Tongbai County, Nanyang Prefecture, Henan Province, China Rob Lavinsky, iRocks.com – CC-BY-SA-3.0	0	1	0	PL	Sulphide , Silicate
Hematite	Fe₂O₃	Hematite (group), Iron(III) oxide	Specularite, Titanohematite	Hematite Specimen of hematite, from Paraburdoo, Western Australia. Specimen M 41658, Museums Victoria. Photo by John Bosworth, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)	31	2	2	EDS, SXES	Mineral, Simple oxide
Hematite (group)	M^III₂O₃, M=Al,Cr,Fe,V,Ti	—	Eskolaite, Karelianite, Tistarite, Corundum, Hematite		0	33	6	CL/SEM, EDS, Reflectance, SXES	Group , Simple oxide
Hemimorphite	Zn₄(Si₂O₇)(OH)₂·H₂O	Minerals containing H2O, Minerals containing OH	—	Hemimorphite Image of specimen 'Hemimorphite NMNH R3898' (Smithsonian Institution - National Mineral Collection) from Leadville, Lake Co., CO, USA Photo by Chip Clark, Smithsonian Institution, Public Domain	0	1	0	PL	Hydroxide , Mineral, Hydrated , Silicate