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RM2965   Pitticite, 'Ganomatite' - Scorodite, Galena

St. Andreasberg, Braunlage, Goslar, Lower Saxony, Germany

This is another one of those specimens from old collections, as evidenced by the various accompanying labels, that contain discredited or dubious mineral names. Even so, the historical and scientific interest it presents has made us offer it.
In the piece we observe a core of galena with halos of alteration of the vein in the socket. In the cavities we find numerous well-formed crystals of cerussite. And in some areas we observe greenish and honeyed tones probably corresponding to pyromorphite, but also to possible scorodite. The 'ganomatite' is considered a scorodite with impurities, while the pitticite is a questionable species formed by amorphous hydrated iron arsenate. Although this last mineral is currently accepted, it is questioned.

Size: 5.4 x 4 x 3.9 cm.
Found in ±1977.

Col. Joan Astor (Barcelona).