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Scarva Raw Materials Petalite/Lepedolite RM1041 From £2.50
A natural, lithium-bearing material used as flux in both earth-enware and stoneware clays.
It lowers maturing temperature wit-hout shortening firing range, reduces the risk of dunting and increases resistance to thermal shock. As a flux in high firing glazes, its low thermal expansion reduces crazing.
It produces a strong alkaline colour response with copper and manganese.
Formula: 0.2% K2O 1.6% Na2O 4% Li2O 15.7% AI2O3 76.1% SiO2
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