Petalite (0.2% K2O, 1.6% Na2O, 4% Li2O, 15.7% AI2O3, 76.1% SiO2) 1kg

A secondary flux at both earthenware and stoneware temperatures, Petalite supplies lithium to clay bodies and glazes. It has a highly alkaline response to additions of copper and manganese. Can be added to clay bodies to increase thermal shock resistance and reduce risk of dunting.