Dear Louis,
Zircons have extremely variable etch times - 60 hours isnt that unusual for
very young zircons. If you are really worried, John Garver (at Union
College) is the person to ask, as he does a lot of zircon work.
Cheers
Ann Blythe
Ann Blythe
Assistant Research Professor
Department of Earth Sciences
University of Southern California
Los Angeles, CA 90089-0740
phone: (213) 821-1094
fax: (213) 740-8801
|