Well, the next step is to drop the blueschist facies because blueschists sometimes occur in the greenschist facies. eric A check of my bookshelf shows that Frank Spear (1993, Min Soc Am Monograph >1,p. 14-18) already implemented both of my suggestions re SCMR's Paper #3 >(i.e., he dropped pyroxene-hornfels and sanidinite facies, and he opted for >"blueschist facies" instead of "glaucophane-schist facies"). Way to go >Frank!!! > >Cheers, Dugald Eric Essene Professor of Geology Department of Geological Sciences 2534 C.C. Little Bldg. 425 E. University Ave. University of Michigan Ann Arbor MI 48109-1063 USA fx: 734-763-4690 ph: 734-764-8243