author(s) : Williams
date of publication : 1973
source : Min.Mag.(39) p.261-263
formula : Cu4Zn8(TeO3)3 (OH)18
comments about the origin : Williams 1879
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP