Grossular : CSIRO Spectroscopy Database

Grossular [ Ca₃Al₂(SiO₄)₃ ]

Images of Grossular

CL spectrum of Grossular [Ca3Al2(SiO4)3] from Bangladesh, measured July 2023, in map 'Guide 2-1 0009-3 Non-mag'

OpticalFit spectrum plot by A. Torpy. (C) 2023 CSIRO Mineral Resources

Specimen of grossular, from Khalola hill near Sassi, Gilgit- Baltistan, Pakistan. Specimen M 38031, Museums Victoria.

Photo by John Bosworth, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)

CL spectrum of Grossular from the Tista River, Bangladesh

Material properties

Formulas	Ca₃(Al,Fe^III)₂(SiO₄)₃, Ca₃Al₂(SiO₄)₃
Abbreviation	Grs, Grs
Variants	Fe, Fe3+
Classifications	Andradite-Grossular (series), Minerals containing SiO4, Garnet
Member	Hydrogrossular
Luminescence emitters	Mn, Unspecified
Spectra	Luminescence (2)
IMA Status	Approved (IMA 1962 s.p.)
Search other databases	webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry	Cubic, Point group m3m, Space group Ia3d (#230)
Tags	Mineral, Aluminosilicate, Aluminosilicate

Composition

Element	Atoms
O	12
Al	2
Si	3
Ca	3
Total:	20

References for Grossular

CSIRO R-2023-03 Bangladesh

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Torpy et al. 2020, luminescence

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Torpy et al. 2020, luminescence, other

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Specimens of Grossular

Name	Owner	Materials	Phase purity	Image	Spectra	Techniques
MES042 Grossular	CSIRO	Grossular (99.2%)	99.2	MES042 Grossular Image of Grossular [ Ca3Al2(SiO4)3 ] in specimen 'MES042 Grossular' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.	0	—
46E3372 Grossular	CSIRO	Albite, Albite, Ca, Fluorapatite, Grossular (81.4%), Orthoclase, Quartz, Titanite	81.4	46E3372 Grossular Image of Grossular, Albite (var. Ca), Albite, Fluorapatite, Orthoclase, Quartz and Titanite in specimen '46E3372 Grossular' [CSIRO]. (C) 2025 CSIRO Mineral Resources. All rights reserved.	0	—
M1413 Quartz / Grossular / Almandine	CSIRO	Almandine, Clinochlore, Fe, Grossular (31.9%), Ilmenite, Muscovite-1M, Quartz	31.9	M1413 Quartz / Grossular / Almandine Image of Quartz, Almandine, Clinochlore (var. Fe), Grossular, Ilmenite and Muscovite-1M in specimen 'M1413 Quartz / Grossular / Almandine' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.	0	—
MES013 Muscovite / Grossular / Paragonite	CSIRO	Clinochlore, Fe, Grossular, Fe3+ (20.8%), Muscovite-2M1, Paragonite-2M1, Phlogopite-2M1, Quartz	20.8	MES013 Muscovite / Grossular / Paragonite Image of Muscovite-2M1, Clinochlore (var. Fe), Grossular (var. Fe3+), Paragonite-2M1, Phlogopite-2M1 and Quartz in specimen 'MES013 Muscovite / Grossular / Paragonite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.	0	—
M2086 Wollastonite	CSIRO	Calcite, Grossular (2.0%), Wollastonite, Wollastonite-1A	2.0	M2086 Wollastonite Image of Wollastonite, Calcite, Grossular and Wollastonite-1A in specimen 'M2086 Wollastonite' [CSIRO], from Willsboro, Essex Co., NY, USA. (C) 2026 CSIRO Mineral Resources. All rights reserved.	1	Reflectance
M2168 Andalusite	CSIRO	Andalusite, Grossular (1.3%), Muscovite-2M1, Sillimanite	1.3	M2168 Andalusite Image of Andalusite, Grossular, Muscovite-2M1 and Sillimanite in specimen 'M2168 Andalusite' [CSIRO]. (C) 2025 CSIRO Mineral Resources. All rights reserved.	0	—
Tista 2020 D4 Shaker	CSIRO	Albite, Allanite-(Ce), Amphibole, Andesine, Apatite, Augite, Biotite, Bytownite, Chlorite, Mg, Fe, Epidote, Garnet, Grossular, Ilmenite, Ilmenite, Mn, K feldspar, Kyanite, Monazite-(Ce), Muscovite, Oligoclase, Pyroxene, Quartz, Staurolite, Titanite, Titanohematite, Xenotime-(Y), Zircon, Zoisite	—	Tista 2020 D4 Shaker Clustered phase map of river sands (D4 shaker), from the Tista River, Bangladesh. From Torpy et al. 2020 (C) 2020 CSIRO Mineral Resources	46	CL, EDS