This rare arborescent habit of crystallization was found in only one pocket at Broken Hill, and specimens are quite uncommon. This is an elegant, branching example of large crystals for the species. Formerly in the collection of Dr. Ed David. I was later told that these were found in the 1960s on the 18th level of the mine, and that they are now considered to be pseudomorphs after the worlds largest rammelsbergite crystals (see Rock Currier's MINDAT forum on "best minerals - Alabandite" for more info including a photo of another piece from this notable pocket). Joe Budd photos