Sphalerite     Pierrepont Z.C.A. Mine, West Pierrepont, St. Lawrence County, New York. Ex. New York State Museum. A nice small plate of crystal, many of them twinned, that have a fine dusting of pyrite crystals. No damage.  This 4.2 x 2.2 x 1.5 cm plate that barely fits in a perky box.  These are very difficult to find for sale any longer.  This mine has exhausted the ore body and has been closed for some time now.  $95