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. Nice condition, no damage!  2.3 x 1.5 x 1.2 cm.  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.  $85