Here is one that is really nice but uses a small amount of GB. A substitute should not be too much different. Celedon^6Reduction Whiting 18.5 Neph. Syn 25.8 EPKaolin 18.8 Silica 31.1 Gerstley Borate 4.6 Red Iron Oxide 1.5 100.3 Marcia -- Tuscany in 2003 http://home.attbi.com/~m.selsor/Tuscany2003.html