Stannite Ore
Pirquitas Ag-Sn Deposit, Rinconada Department, Jujuy, Argentina
Cabinet, 12.6 x 8.3 x 4.4 cm
Ex. Philadelphia Academy of Natural Sciences
A solid, HEAVY, 3.7-pound ore sample of massive "stannite" from this unusual locality, undoubtedly containing other minerals as well. I am told that little research was done on rarities present in ores recovered here in the early days, and that there is suspicion based on recent studies of a wide variety of rare tin and silver minerals like pirquitasite, present in old ore specimens like this (perhaps if only as thin sections waiting to be identified by somebody who wants to spend the time). The list of minerals present in this rich deposit (see MINDAT), is daunting already.