ZAMBITO, James J. IV, Wisconsin Geological Survey, University of Wisconsin Extension, 3817 Mineral Point Rd, Madison, WI 53705, jay.zambito@wgnhs.uwex.edu, BENISON, Kathleen C., Department of Geology and Geography, West Virginia University, Morgantown, WV 26506-6300, PERYT, Tadeusz M., Panstwowy Instytut Geologiczny, Rakowiecka 4, Warszawa, 00-975, Poland, and KOVALEVYCH, Volodymyr, Institute of Geology and Geochemistry of Combustible Minerals, National Academy of Sciences of Ukraine, Naukova 3A, Lviv, 79053, Ukraine