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Kamogawa Stone

OxideAnalysisFormula
CaO5.98%0.428
MgO3.01%0.300
K2O1.19%0.051
Na2O3.41%0.221
TiO22.24%0.113
Al2O313.94%0.549
SiO254.79%3.662
Fe2O313.24%0.332
LOI2.19
Oxide Weight392.90
Formula Weight401.70
If this formula is not unified correctly please contact us.

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.



By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Kamogawa Stone" descrip="" searchkey="" loi="0.00" casnumber=""> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="5.980" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="3.010" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="1.190" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="3.410" tolerance=""/> <oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="2.240" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="13.940" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="54.790" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="13.240" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="2.190" tolerance=""/> </volatiles> </material>


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