nontronite

certainty of origin : Donated directly by the Author.

author(s) : Berthier

date of publication : 1827

source : Ann.Ch.Phys.(36) p.22

formula : Fe2(OH)2 (Al0,33Si3,67O10)Na0,33(H2O)4

comments about the origin : coll.generale No40 obtenu par Berthier

Return to the Type or Author's Specimen Catalog

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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