Copper Carbonate

500g COPPER CARBONATE

Part #MCRC2

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CuCO3·Cu(OH)2  A source of copper oxide (CuO) and a recipe substitute for the same by adding 40% more. 3% added to most glazes yields a clear green. In alkaline glazes the colour shifts to turquoise blue.  At 7% or more, metallic surfaces develop. Fired in a reduction atmosphere, red colours are achieved with ½% or less.
Note: Glazes become increasingly susceptible to food acid attack as copper oxide levels increase.