Clinochlore : CSIRO Spectroscopy Database

Clinochlore [ Mg₅Al(AlSi₃O₁₀)(OH)₈ ]

Image of Clinochlore

Clinochlore specimen from Achmatowsk, Ural Mtns., Chelyabinsk Oblast, Russia

Photo by Burton Litman, via Smithsonian National Museum of Natural History

Material properties

Formulas	(Mg,Fe^II)₅Al(AlSi₃O₁₀)(OH)₈, Mg₅Al(AlSi₃O₁₀)(OH)₈
Abbreviation	Clc
Variant	Fe
Classifications	Chlorite (group), Minerals containing OH
Luminescence emitters	Fe, Mn, Si-O
IMA Status	Grandfathered (pre-IMA), 1851
Search other databases	webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry	Monoclinic
Tags	Hydroxide , Mineral, Aluminosilicate

Composition

Element	Atoms
Al	2
O	18
Si	3
H	8
Mg	5
Total:	36

References for Clinochlore

Kuznetsov et al. 1991

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Laukamp et al. 2021

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Specimens of Clinochlore

Name	Owner	Materials	Image	Spectra	Techniques
M1850 Quartz / Eucryptite / Cookeite	CSIRO	Clinochlore, Fe, Cookeite, Eucryptite, Kaolinite, poorly crystalline, Quartz	M1850 Quartz / Eucryptite / Cookeite Image of Eucryptite, Clinochlore (var. Fe), Cookeite, Kaolinite (var. poorly crystalline) and Quartz in specimen 'M1850 Quartz / Eucryptite / Cookeite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.	1	Reflectance
M2843 Quartz / Eucryptite	CSIRO	Clinochlore, Fe, Cookeite, Eucryptite, Kaolinite, poorly crystalline, Prehnite, Quartz	M2843 Quartz / Eucryptite Image of Eucryptite, Clinochlore (var. Fe), Cookeite, Kaolinite (var. poorly crystalline), Prehnite and Quartz in specimen 'M2843 Quartz / Eucryptite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.	1	Reflectance
MCU_EPI_1 Epidote	CSIRO	Albite, Clinochlore, Fe, Epidote, Magnetite, Quartz	MCU_EPI_1 Epidote Image of Epidote, Albite, Clinochlore (var. Fe), Magnetite and Quartz in specimen 'MCU_EPI_1 Epidote' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.	2	Reflectance
MES177 Tremolite / Actinolite	NVCL, AuScope Limited	Actinolite, Clinochlore, Fe, Quartz, Tremolite	MES177 Tremolite / Actinolite Image of Actinolite, Clinochlore (var. Fe), Quartz and Tremolite in specimen 'MES177 Tremolite / Actinolite' [NVCL, AuScope Limited], from Spoo Ness, Lunda Wick, Unst, Shetland Islands, United Kingdom. (C) 2026 CSIRO Mineral Resources. All rights reserved.	2	Reflectance
MES199 Talc	CSIRO	Clinochlore, Fe, Talc	MES199 Talc Image of Talc and Clinochlore (var. Fe) in specimen 'MES199 Talc' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.	1	Reflectance
NR-ACT-02 Actinolite	CSIRO	Actinolite, Clinochlore, Fe, Magnetite, Quartz, Tremolite	NR-ACT-02 Actinolite Image of Actinolite, Clinochlore (var. Fe), Magnetite, Quartz and Tremolite in specimen 'NR-ACT-02 Actinolite' [CSIRO]. (C) 2025 CSIRO Mineral Resources. All rights reserved.	2	Reflectance
NR162 Diopside	CSIRO	Clinochlore, Fe, Diopside	NR162 Diopside Image of Diopside and Clinochlore (var. Fe) in specimen 'NR162 Diopside' [CSIRO], from Zillertal, Tyrol, Austria. (C) 2026 CSIRO Mineral Resources. All rights reserved.	2	Reflectance
TS01 Talc / Corundum	CSIRO	Clinochlore, Fe, Corundum, Talc	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