Hello PIGs: I replied to a private email that came to me via the MSA Pegmatite List, and I did not realize that my reply went to all. My apologies. Please remember to contact me directly at: dlondon1@memphis.edu in any and all communications that are meant for me. David London Learn about pegmatites and join the Pegmatite Interest Group at http://www.minsocam.org/msa/Special/Pig/