Pyrite     French Creek Mine, St. Peters, Chester Co., PA.  Ex. Dr. Steve Chamberlain collection.  This is a stunning 1979 specimen that probably looks as good as the day it was found.  It is composed of intergrown crystals to 1.5 cm each.  They have interesting rounded octahedral modifications and curved faces.  The specimen measures 3.5 x 2.5 x 2.5 cm.  There is no damage but the specimen is glued to a wood base with historical information in its bottom.  A couple areas have sphalerite coating them.  There appears to be no contacts.  I’ve decided to leave the specimen on the base so the new owner can decide if they want to remove it.   Very nice classic east coast specimen.  225$