Galena, Chalcopyrite, Sphalerite, Quartz     Madan Ore Field Rhodopi Mountains, Southeast Bulgaria.  This small plate of quartz has all the mentioned species on both sides of the specimen.  It is a damage-free floater with the exception of one small edge contact.  The galena cubes show minor modifications by the octahedral form.  5.3 x 5.2 x 1.4 cm.  Attractive.  $45