>in half and Stocks uses it for internal illustration
How about he was a student at the UofM and completed a Thesis there in 1988 on the subject?
>You should have no problem in explaining these.
Ya that low-res jug image from 20 years ago... unfortunately it's travertine again (could be a limestone breccia from the close-up I've just seen though but in this case that's also travertine too....). So can you enlighten us first as to why a granite vessel (about 20 cm in diameter, one of the larger ones known in this class) and an smaller andesite porphyry vessel are too difficult for the AEs to carve other than it takes longer than travertine grinding? In both cases the feldspar phenocrysts (just like the large calcite crystals in the travertine examples you keep presenting) have been sectioned by grinding and polishing...........
Archae Solenhofen (firstname.lastname@example.org)