Hi Craig! Good point, we should finally start and use this list for discussions. The program you are looking for is called PTmafic. http://www.ugr.es/~jsoto/PTMafic.htm Let me know how it comes out Cheers Annika Annika Dziggel Economic Geology Research Institute Private Bag 3 PO WITS 2050 Johannesburg South Africa Tel (work) 011-71-76584 Tel (home) 011-726-4861, (cell) 082-3988031