certainty of origin : Unknown type and origin.
author(s) : Adam
date of publication : 1869
source : Tabl.Min. p.56
formula : chalcocite+galene
comments about the origin : coll.Adam No5064
catalog number(s) : 14178
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP