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The chemical formula of pyrophyllite is Al2Si4O10(OH)2.
2.84
G. S. Gibbons has written:
'Talc, steatite, and pyrophyllite' -- subject(s): Pyrophyllite, Soapstone, Talc
Mining: feldspar, mica, pyrophyllite (=half billion $ industry in North Carolina)
Daniel M. Howard has written:
'Mineral commodity report, talc and related minerals' -- subject(s): Talc industry, Pyrophyllite, Talc