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vendredi 21 octobre 2011

C/9 Redux Ste-Anne de Sorel Slip Glaze--C/9 R. Glaçure Argileuse de Ste-Anne de Sorel



















Ste-Anne de Sorel Local Clay 100%



An analysis of 15 samples of local clays as


remnants of the prehistoric Sea of Champlain


that covered most of Quebec's low lands,


published by the Quebec government :



SiO2................................56.0


Al2O3..............................16.2


Fe2O3...............................5.6


TiO2.................................0.8


CaO...................................4.3


MgO.................................2.7


Alcali .................................4.5


L.O.I................................7.7



From this analysis we have calculated


substitutions using common raw materials :



Option I
Redart...................75


Kaolin....................7


Custer...................7


Dolomite..............8


Whiting................3



Option II
Redart...................60


Ball clay................15


Custer...................12


Dolomite...............8


Whiting.................3


RIO........................1.5



Option III
Redart.....................71


Kaolin......................8


Custer.....................10


Dolomite.................8


Whiting...................3


RIO.......................0.6



Option IV
Redart.....................68


Ball clay...................11


Custer.....................10


Dolomite.................8


Whiting...................3


RIO.......................0.6



Option V
Redart..........................71


Ball clay......................12


Custer..........................6


Dolomite....................8


Whiting......................3



Option VI
Redart..........................63


Ball clay.......................14


Custer..........................11


Dolomite......................8


Whiting........................3


RIO............................1.2




Option VII
Redart............................56


Ball clay.........................17


Custer............................14


Dolomite.........................8


Whiting...........................3


RIO..................................2



Option VIII
Redart................................77


Dolomite............................8


Whiting..............................3


Ball Clay............................12


Red Iron Oxide...............0.2



Option IX
Redart.................................77


Nepheline/Syenite...........12


Dolomite.............................7


Whiting...............................4