Quartz Lumps

Chemical analysis of quartz lumps 1 loss on ignition loi 0.15% 2 silica sio2 99.51% 3 aluminium al2o3 0.07% 4 iron fe2o3 0.07% 5 calcium cao 0.007% 6 magnesium mgo 0.1% 7 sodium na2o 0.003% 8 potassium k2o 0.003% 9 manganese mno less than 0.01% 10 titanium tio2 less than 0.01% 11 cholorides cl less than