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Ganophyllite from
Ananai mine, Nagaoka-gun, Kochi Prefecture, Shikoku Island, Japan

Mineral Species
Formula:(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O
Quality of samples:not specified / average specimens
Validity:Believed Valid
References:Smith, M.L. and Frondel, C. (1968) The related layered minerals ganophyllite, bannisterite and stilpnomelane. Mineralogical Magazine: 36: 893-913.; Alfredo Petrov collection; Okamoto collection (curated at the Geological Survey museum, Japan)
Mineral Data:Click here to view Ganophyllite data
Locality Data:Click here to view Ananai mine, Nagaoka-gun, Kochi Prefecture, Shikoku Island, Japan
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