Chemical and granulometric composition of quartzite: mass fraction of silicon oxide (SiO2) - 96%; permissible deviation in mass fraction of silicon oxide - (-1)%; mass fraction of aluminum oxide (Al2O3) - no more than 1.2; mass fraction of iron oxide (Fe2O3) - no more than 2.2; size - 0-20 mm; mass fraction of class +20 mm - no more than 10%; moisture - no more than 3%.
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