Gypsum : CSIRO Spectroscopy Database

Gypsum [ Ca(SO₄)·2H₂O ]

Images of Gypsum

Shortwave UV photoluminescence image of a specimen of gypsum, from Willow Creek, Nantoon, Canada. Size: 6cm

Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.

Shortwave UV photoluminescence image of a specimen of gypsum from Willow Creek, Nantoon, Canada. Size: 6cm

Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.

Photograph of a specimen of gypsum from Willow Creek, Nantoon, Canada. Size: 6cm

Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.

Photograph of a specimen of gypsum, from Willow Creek, Nantoon, Canada. Size: 6cm

Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.

Image of a specimen of gypsum (M 47268, Museums Victoria), from Selwyn, Queensland, Australia

Photograph by John Broomfield, Museums Victoria, CC-BY

Material properties

Formula	Ca(SO₄)·2H₂O
Abbreviation	Gp
Classifications	Minerals containing SO4, Minerals containing H2O, Gypsum (supergroup), Calcium sulphate
Member	Selenite
Luminescence emitters	H2O, Mn, OH/H2O, Singlet-triplet, SO4, Triplet-singlet
IMA Status	Grandfathered (pre-IMA), antiquity
Search other databases	webmineral.com, mindat.org, rruf.info, fluomin.org, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags	Mineral, Sulphate , Hydrated

Composition

Element	Atoms
S	1
Ca	1
O	6
H	4
Total:	12

References for Gypsum

Gorobets and Rogojine 2002

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17

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4

Laukamp et al. 2021

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Tarashchan 1978

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Specimens of Gypsum

Name	Owner	Materials	Phase purity	Image
NRGYP02 Gypsum	CSIRO	Calcite, Gypsum (98.7%)	98.7	NRGYP02 Gypsum Image of Gypsum and Calcite in specimen 'NRGYP02 Gypsum' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
Gypsum (#1, Canada)	Hamblen, Prof James O., Georgia Tech	Gypsum	—	Gypsum (#1, Canada) Photograph of a specimen of gypsum, from Willow Creek, Nantoon, Canada. Size: 6cm Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.
Gypsum (#4, Manitoba, Canada)	Hamblen, Prof James O., Georgia Tech	Gypsum	—	Gypsum (#4, Manitoba, Canada) Photograph of a specimen of gypsum from Willow Creek, Nantoon, Canada. Size: 6cm Photo (C) 2003 James O. Hamblen (http://hamblen.ece.gatech.edu/uvminerals/). Reproduced with permission.