Acts as a flux in clay bodies for improved vitrification and workability
Functions as an opacifier in glazes to control light transmission
Helps incorporate tin oxide in glazes for desired color effects
Can be used in varying amounts to fine-tune fluxing action
At high concentrations, it can be used to make bone china
Summarized by Shop
Ground calcined bones used in clay bodies as a flux and in glazes as an opacifier. Helps tin oxide in glazes but can be a cause of crawling and blistering.
In clay, small amounts increase the fluxing action of feldspar and at large amounts(25-55%), is used to make bone china.
