> Other raw materials can include feldspar, ball clay, glass, bone ash, steatite, quartz, petuntse and alabaster.
So I'd guess that "Porcelain Stone" isn't anything specific, but could possibly (not even necessarily) be a silicate.
> Other raw materials can include feldspar, ball clay, glass, bone ash, steatite, quartz, petuntse and alabaster.
So I'd guess that "Porcelain Stone" isn't anything specific, but could possibly (not even necessarily) be a silicate.