Noreena Jasper rough NJR170 stromatolite grinding or polishing as the fossil stromatolite It weighs 276 grams POT124
Yard notes & kiln story
Description
Noreena Jasper rough NJR170 stromatolite grinding or polishing as the fossil stromatolite It weighs 276 grams POT124 grinding or polishing as the matrix holding the pisolites (small round pebbles) is in many cases quite soft The porphyry pictured here has pinkish coloured clinozoisite crystals set in a ground mass of dolerite