Pyrophyllite : CSIRO Spectroscopy Database

Pyrophyllite [ Al₂Si₄O₁₀(OH)₂ ]

Image of Pyrophyllite

Pyrophyllite specimen from Maricopa, Kern Co., CA, USA.

Photo by Chip Clark, Smithsonian Institution. CC0

Material properties

Formula	Al₂Si₄O₁₀(OH)₂
Abbreviation	Prl
IMA Status	Grandfathered (pre-IMA), 1829
Crystal symmetry	Triclinic
Classifications	Minerals containing OH, Clay
Luminescence emitter	Triplet-singlet
Reflectance lines	M[n]OH, RSC
Search other databases	webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags	Aluminosilicate, Hydroxide, Mineral

Composition

Element	Atoms
O	12
Al	2
H	2
Si	4
Total:	20

References for Pyrophyllite

Laukamp et al. 2021

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Tarashchan 1978

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Specimens of Pyrophyllite

Name	Owner	Materials	Image
M2208 Pyrophyllite	CSIRO	Pyrophyllite	M2208 Pyrophyllite Image of Pyrophyllite [ Al2Si4O10(OH)2 ] in specimen 'M2208 Pyrophyllite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.
MES010 Pyrophyllite	CSIRO	Pyrophyllite	MES010 Pyrophyllite Image of Pyrophyllite [ Al2Si4O10(OH)2 ] in specimen 'MES010 Pyrophyllite' [CSIRO]. (C) 2026 CSIRO Mineral Resources. All rights reserved.