well! I have been loaned a fantastic Swift petrological microscope and about 100 terrestrial t/s (but only one meteorites NWA 869)! It is one heckkuva piece and I foresee a huge learning curve.... any good and informative "101s" out there in web world I can go to? ta dave IMCA #0092 Sec.BIMS. www.bimsociety.org