Ceramic Materials

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Gillespie Borate

Gerstley Borate Substitute

Alternate Names: Gilespie Borate

OxideAnalysisFormula
CaO23.00%0.717
MgO3.90%0.169
Na2O3.77%0.106
SrO0.45%0.008
Al2O31.70%0.029
B2O324.50%0.616
SiO211.80%0.343
LOI30.90
Oxide Weight120.86
Formula Weight174.90
This is the chemistry of the material (the formula compares numbers of molecules, the analysis compares them by weight). In glazes, the composite chemistry of the mix is the main factor shaping fired properties (e.g. color, melting temperature, surface). In bodies we are interested in their physical properties (e.g. shrinkage, porosity, strength), these are a product of the mineralogy of the materials.

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By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Gillespie Borate" descrip="Gerstley Borate Substitute" searchkey="Gilespie Borate" loi="0.00" casnumber="167077-83-0"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="23.000" tolerance=""/> <oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="3.900" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="3.770" tolerance=""/> <oxide symbol="SrO" name="Strontium Oxide, Strontia" status="" percent="0.450" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="1.700" tolerance=""/> <oxide symbol="B2O3" name="Boric Oxide" status="" percent="24.500" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="11.800" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="30.900" tolerance=""/> </volatiles> </material>


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