Wild porcelain is a fine, white-burning clay composed of kaolin, silica, fluxes, and often ball clay, formed through the weathering of aluminum-rich rock. It is usually pure white or “eggshell” in color and differs in both color and firing response from clays with higher iron content.
Handling Notes
- Often used as a glaze test reference
- It fires white, but the iron content varies, which can impact the color when fired
- Color and vitrification differ by dig site, so no two wild porcelains fire identically
Sources
- Levy, Matt, Takuro Shibata, and Hitomi Shibata. Wild Clay: Creating Ceramics and Glazes from Natural and Found Resources. London: Herbert Press, 2022.
- Pottery Glossary: “Glossary of Pottery Terms,” Ceramic Arts Network, n.d., https://ceramicartsnetwork.org/Resources/Glossary
In Use
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mgoodman@centerforcraft.org