Magnetite and Sphalerite    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 simple cubes in beautifully formed, damage-free crystals.  Surrounding these are tiny sphalerites and second generation cubes.  Everything sparkles.  3.7 x 2 x 2 cm.  Only frontal view is crystallized.  Damage-free.   $70