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Feldspar, Custer - 1 lb.
 
Potash, Sodium, Calcium 200 mesh Feldspar. Custer Feldspar is made from crushed crystalline rock containing a mixture of aluminum silicates of sodium and potassium. Contains 10.28% K2O and 2.91% Na2O. Generally high potash feldspars are employed in bodies and promote vitrification by forming a glassy phase that 'cements' more refractory particles together and triggers the formation of mullite from clay mineral. In glazes it promotes melting at medium and high temperatures (feldspars are the primary ingredient in most high temperature raw glazes). Source: Digital Fire.
 
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Price: $1.50
Quantity Pricing
Quantity
Price
1-4
$1.50
5-9
$0.49
10-49
$0.41
50-99
$0.33
100-499
$0.28
500+
$0.27

 
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