Hi, Take a look at http://www.geoscience.org.za/ and search for software. They have one or two things there for free. They're supposed to have a PC program that calculates CIPW norms but I can't find it. I have the zipped file here if it's of use - just let me know. Malc. "John B. Brady" wrote: > Dear Hassina and others, > > There is a pretty good listing of petrologic software with URL's on the MSA > web site at: > > http://www.minsocam.org/MSA/Software.html > > Best wishes, > John > > ============================================================== > John B. Brady > Department of Geology, Smith College, Northampton, MA 01063 > Voice: 413-586-9014 Fax: 413-585-3786 > http://www.science.smith.edu/departments/geology > http://gmr.minsocam.org > ============================================================== -- Dr MP Roberts Phone: [+27](0)46 603 8313 Dept of Geology Fax: [+27](0)46 622 9715 Rhodes University Cell: 083 4060 262 (try your luck!) 6140 Grahamstown e-mail: [log in to unmask] SOUTH AFRICA