Feldspar code FN-143, with total alkaline elements of 8, shrinkage of about 6 and water absorption of about 7, also has suitable physical properties for the production of porcelain tiles and light-baked granite.

Acid test : no reaction 

coefficient of thermal expansion :74

Reset mesh230:N.A.

Soil hardness :mostly hard

Color before baking :milky to cream

Color after baking :milky

Furnace temperature :1155C

Furnace cycle :65Min

Dry strenght:14

Dry shrinkage :N.A.

Curing strenght :150

Baking shrinkage :5.92

Heat wave :N.A.

Water absorption :6.47

Slurry viscosity :35

Slurry density :1.60