|Monthly Tech-Tip |
We do not know much about this material, and have lost track of where this analysis is from. However, if this chemistry is correct, this is clearly a well fluxed material that would melt well. It also has an exceptionally high iron content not to mention alot of TiO2.
A potter from Japan told us that the glaze on black Raku tea bowls was made from Kamogawa stone and that they included lead.