manganpyrosmalite

certainty of origin : Donated directly by the Author.

author(s) : Frondel and Bauer

date of publication : 1953

source : Am.Min.(38) p.755-760

formula : (Mn,Fe)8 Si6O15(OH,Cl)10

comments about the origin : Frondel 1963

catalog number(s) : 22882

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This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.

(C) BRGM, ENSMP

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