Corundum : CSIRO Spectroscopy Database

Corundum [ Al₂O₃ ]

Images of Corundum

CL/SEM spectrum of Corundum

An image of corundum (rubies and sapphires), specimen M 898 (Museums Victoria), from Victoria, Australia

Photograph by Frank Coffa, Museums Victoria, CC-BY

SXES spectrum of Corundum

Material properties

Formula	Al₂O₃
Abbreviation	Crn
Classifications	Alumina, Hematite (group)
Members	Sapphire, Ruby, Sapphire, Eu doped
Luminescence emitters	Ca/Mg, Cr, F+ center, Fe, Intrinsic, Unspecified
Spectra	Luminescence (1), SXES (1)
IMA Status	Grandfathered (pre-IMA), 1714 (?)
Search other databases	webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry	Trigonal, Point group 3m, Space group R3c (#167)
Tags	Mineral, Simple oxide

Composition

Element	Atoms
Al	2
O	3
Total:	5

References for Corundum

CSIRO SXES database

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1

Moore & Karakus 1994

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CSIRO CL spectra 2016

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Specimens of Corundum

Name	Owner	Materials	Phase purity	Image	Spectra	Techniques
TS01 Talc / Corundum	CSIRO	Clinochlore, Fe, Corundum (19.0%), Talc	19.0	TS01 Talc / Corundum Image of Talc, Clinochlore (var. Fe) and Corundum in specimen 'TS01 Talc / Corundum' [CSIRO], from Three Springs, Shire of Three Springs, Mid West Region, WA, Australia. (C) 2026 CSIRO Mineral Resources. All rights reserved.	1	Reflectance
M1352 Kyanite / Corundum	CSIRO	Corundum (13.2%), Kyanite, Rutile	13.2	M1352 Kyanite / Corundum Image of Kyanite, Corundum and Rutile in specimen 'M1352 Kyanite / Corundum' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.	0	—
Al2O3 LE2-10	CSIRO	Corundum	—		1	SXES