author(s) : Williams
date of publication : 1974
source : Min.Mag.(39) p.744
formula : Cu5(TeO3)2 (OH)6 2H2O
comments about the origin : Williams 1977 par Bariand (cotype)
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP