Ash glaze
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Wikipedia
Ash glazes are types of high temperature glazes for stoneware pottery that include the ashes of trees, shrubs, plants or grasses within the glaze recipe.
Plant ashes are a complex mixture that reflect the nutritional requirements, and therefore composition, of the living plant. High in calcium and also incorporating other alkaline material, ash behaves as a flux, encouraging the glass forming oxide silica to melt at a temperature within the scope of a pottery kiln. Ash glazes often have a characteristic mottled or streaky texture, depending on the amount of ash incorporated.
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Last updated on Wednesday April 23, 2008 at 01:57:02 PDT (GMT -0700)
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Last updated on Wednesday April 23, 2008 at 01:57:02 PDT (GMT -0700)
View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation
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