author(s) : Werner and Hauy
date of publication : 1808
source : Werner : Kastens Tab.Berlin. Hauy : Tabl. Comp.
formula : Ca(AlSi2O6)2 4H2O
comments about the origin : coll.generale NoM1328-8759(5), M2092(6) donne par de Laumont et NoV3901
This type specimen, kept in the Museum of Ecole des mines de Paris, has been indexed by Dr Guillemin.
(C) BRGM, ENSMP