HENRY, Darrell, Geology and Geophysics, Louisiana State University, E235 Howe-Russell Building, Baton Rouge, LA 70803, NOVÁK, Milan, Department of Geological Sciences, Masaryk University, Kotlářská 267/2, Brno, 611 37, Czech Republic, HAWTHORNE, Frank, Geological Sciences, University of Manitoba, 125 Dysart Road, 240 Wallace Bldg, Winnipeg, MB R3T 2N2, Canada, ERTL, Andreas, Mineralogisch-Petrographische Abt, Naturhistorisches Museum, Burgring 7, Vienna, 1010, Austria, DUTROW, Barbara L., Dept. of Geology and Geophysics, Louisiana State University, Baton Rouge, LA 70803, UHER, Pavel, Mineral Deposits, Comenius University in Bratislava, Mlynská dolina, Bratislava, 842 15, Slovak Republic and PEZZOTTA, Federico, Mineralogy Department, Museo di Storia Naturale, Corso Venezia 55, Milan, I-20121, Italy, glhenr@lsu.edu, glhenr@lsu.edu