Midstone
Plainsman Native Clay
Chemistry
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Volatiles
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Miscellaneous
- Family: Clay Other
- Region: None
- Mined At: Unspecified
- Raw Mineral: No
- Generic: No
Notes
A unique fine grained, clean material, vitrifying and reaching very high strength at cone 8. It is well balanced and of medium plasticity and suitable as the main constituent for mid-temperature bodies and to promote vitrification in the higher ranges without adding dark color. This material is balanced enough to use by it self for pottery.
Fired Temperature, Cone 3 4 5 6 7 8
--------------------------------------
Fired Shrinkage: 4.5% 4.8% 5.2% 5.6% 6.1% 6.0%
Absorption: 6.0% 5.0% 3.8% 2.4% 1.4% 1.0%
Fired Strength:
(lbs/ square inch) 7000 9000 10700 11600 12200
Sieve Analysis Wet Washed
(Root of 2 series) +35 +48 +65 +100 +150# +200 +325
--------------------------------------------
0.0% 0.1 0.4% 1.2% 2.0% 4.1% 11.8%
Texture: Smooth
Plastic Index (1-10): 6
Green Strength (lbs/sqaure inch): 1050
Dry shrinkage: 6.0
Dried density: 2.03
PCE: 23
Data
- Melting Point (MP): PCE 23
- Melting Point (MP): PCE 23
URLs
- Data Sheet - http://digitalfire.com/plainsman/data/midstone.htm
Suppliers
- Plainsman Clays
Authors
- Tony Hansen (Owner)
XML
<?xml version="1.0" encoding="UTF-8"?>
<material name="Midstone" descrip="Plainsman Native Clay" generic="0" rawmineral="0" searchkey="" loi="6.49">
<families>
<family name="Clay Other"/>
</families>
<oxides>
<oxide symbol="BaO" name="Barium Oxide, Baria" status="" percent="0.320" tolerance=""/>
<oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="0.230" tolerance=""/>
<oxide symbol="MgO" name="Magnesium Oxide, Magnesia" status="" percent="0.650" tolerance=""/>
<oxide symbol="K2O" name="Potassium Oxide" status="" percent="2.590" tolerance=""/>
<oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="0.060" tolerance=""/>
<oxide symbol="P2O5" name="Phosphorus Pentoxide" status="" percent="0.150" tolerance=""/>
<oxide symbol="TiO2" name="Titanium Dioxide, Titania" status="" percent="0.680" tolerance=""/>
<oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="17.190" tolerance=""/>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="70.370" tolerance=""/>
<oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="1.260" tolerance=""/>
<oxide symbol="MnO" name="Manganous Oxide" status="" percent="0.010" tolerance=""/>
</oxides>
<volatiles>
<volatile symbol="" name="" percent="6.490" tolerance=""/>
</volatiles>
<suppliers>
<supplier name="Plainsman Clays" country="CA" url="http://www.plainsmanclays.com" label=""/>
</suppliers>
<notes>
<note>A unique fine grained, clean material, vitrifying and reaching very high strength at cone 8. It is well balanced and of medium plasticity and suitable as the main constituent for mid-temperature bodies and to promote vitrification in the higher ranges without adding dark color. This material is balanced enough to use by it self for pottery.
Fired Temperature, Cone 3 4 5 6 7 8
--------------------------------------
Fired Shrinkage: 4.5% 4.8% 5.2% 5.6% 6.1% 6.0%
Absorption: 6.0% 5.0% 3.8% 2.4% 1.4% 1.0%
Fired Strength:
(lbs/ square inch) 7000 9000 10700 11600 12200
Sieve Analysis Wet Washed
(Root of 2 series) +35 +48 +65 +100 +150# +200 +325
--------------------------------------------
0.0% 0.1 0.4% 1.2% 2.0% 4.1% 11.8%
Texture: Smooth
Plastic Index (1-10): 6
Green Strength (lbs/sqaure inch): 1050
Dry shrinkage: 6.0
Dried density: 2.03
PCE: 23
</note>
</notes>
<testdata>
<testitem testname="0" value="PCE 23"/>
<testitem testname="0" value="PCE 23"/>
</testdata>
</material>
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