Helmer Kaolin
Helmer clay
Chemistry
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Volatiles
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Links to Other Materials
Miscellaneous
- Family: Kaolin
- Region: North America
- Mined At: Unspecified
- Raw Mineral: No
- Generic: No
Notes
A kaolin deposit near Helmer, Idaho (US) that has been developed and promoted by Michael Wendt since the mid seventies. Helmer clay is used primarily for its 'flashing' properties in wood firing. Mr. Wendt prepares it using a wet process that removes soluble and iron particulate impurities.
Plainsman Clays sells the same material under the name "Troy Clay". Plainsman hammermills the raw product to about 40 mesh, a finer grade than the one from Mr. Wendt.
Linked Articles
Rationalizing Conflicting Opinions About Plasticity
How can two potters have completely different opinions about the plasticity and workability characteristics of the same clay body
URLs
- Data Sheet - http://digitalfire.com/plainsman/data/helmer.htm
Suppliers
- Plainsman Clays
Authors
- Tony Hansen (Owner)
XML
<?xml version="1.0" encoding="UTF-8"?>
<material name="Helmer Kaolin" descrip="Helmer clay" generic="0" rawmineral="0" searchkey="Helmar Kaolin" loi="13.22">
<families>
<family name="Kaolin"/>
</families>
<regions>
<region name="North America"/>
</regions>
<oxides>
<oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.480" tolerance=""/>
<oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.260" tolerance=""/>
<oxide symbol="K2O" name="Potassium Oxide" status="" percent="0.530" tolerance=""/>
<oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.080" tolerance=""/>
<oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="1.130" tolerance=""/>
<oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="36.000" tolerance=""/>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="46.000" tolerance=""/>
<oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.300" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="" name="" percent="13.220" tolerance=""/>
</volatiles>
<references>
<reference name="seealso" reason=""/>
<reference name="seealso" reason=""/>
</references>
<suppliers>
<supplier name="Plainsman Clays" country="CA" url="http://www.plainsmanclays.com" label=""/>
</suppliers>
<notes>
<note>A kaolin deposit near Helmer, Idaho (US) that has been developed and promoted by Michael Wendt since the mid seventies. Helmer clay is used primarily for its \'flashing\' properties in wood firing. Mr. Wendt prepares it using a wet process that removes soluble and iron particulate impurities.
Plainsman Clays sells the same material under the name "Troy Clay". Plainsman hammermills the raw product to about 40 mesh, a finer grade than the one from Mr. Wendt.</note>
</notes>
</material>
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