Hi Paul Here in Texas I have found pumace on just about every beach from the Louisiana border all the way to the Mexico border. The average size I find is about the size of a golf ball... I do not know of any other studies. Leslie > Dear Friends: > As shell collectors, I presume that a number of you > frequently scour the beaches of the Gulf of Mexico along the > coasts of Texas, Louisiana, Mississippi, and further east on a > regular basis. Does anyone have a sense of the frequency that > pumice washes up on the beaches on the part of the Gulf of > Mexico that you search for shells? I am curious what is the > largest piece of pumice that someone has seen washed upon a > Gulf of Mexico beach? > > Finally, has anyone published any study besides the citations > listed below about drift pumice in either the Gulf of > Mexico or Caribbean Sea? > > Yours, > Paul Heinrich > Baton Rouge, LA > [log in to unmask] > > Known Citations: > > Bryan, W. B., 1972, Cummingtonite-Dacite Drift Pumice > Stranded at West Palm Beach, Florida. Geological > Society America Bulletin. vol. 83, no. 12, pp. 3745-3746. > > Donovan, S. K., 1999, Pumice and Pseudoplankton: > Geological and Paleontological Implications of an Example from > the Caribbean. Caribbean Journal of Science, vol. 35, no. > 3-4, pp. 323–324,