Magnetite     2,500 foot Level of the Zinc Corporation of America Mine, Balmat, St. Lawrence, County, New York.  Ex. Chuck Bowman, Z.C.A. miner and collector of specimen.  Rare, well documented, and important material that is unique to the mineralogical world.  It also ranks among the best known for the species.  This example shows both of the important forms (cubes with tetrahexahedral modifications to faces) in several well-formed crystals.  3 x 2.4 x 2.3 cm.  Back and base contacts present.  Main views are great with the cubes being well defined, aesthetic, and high in luster.  $140