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
Redart...................75
Kaolin....................7
Custer...................7
Dolomite..............8
Whiting................3
Option II
Redart...................60
Redart...................60
Ball clay................15
Custer...................12
Dolomite...............8
Whiting.................3
RIO........................1.5
Option III
Redart.....................71
Redart.....................71
Kaolin......................8
Custer.....................10
Dolomite.................8
Whiting...................3
RIO.......................0.6
Option IV
Redart.....................68
Redart.....................68
Ball clay...................11
Custer.....................10
Dolomite.................8
Whiting...................3
RIO.......................0.6
Option V
Redart..........................71
Redart..........................71
Ball clay......................12
Custer..........................6
Dolomite....................8
Whiting......................3
Option VI
Redart..........................63
Redart..........................63
Ball clay.......................14
Custer..........................11
Dolomite......................8
Whiting........................3
RIO............................1.2
Option VII
Redart............................56
Redart............................56
Ball clay.........................17
Custer............................14
Dolomite.........................8
Whiting...........................3
RIO..................................2
Option VIII
Redart................................77
Redart................................77
Dolomite............................8
Whiting..............................3
Ball Clay............................12
Red Iron Oxide...............0.2
Option IX
Redart.................................77
Redart.................................77
Nepheline/Syenite...........12
Dolomite.............................7
Whiting...............................4
