The product contains 98 % of angular to sub angular grains of silica (SIO2) of the average size of 0.0059 - 0.0079 inches, then kaolinite, quartz cement, muscovite, light-green glauconite (partially limonized) and other trance elements and minerals not influencing its use.
The product fits the description of anti-radiation from the standpoint of the natural radio-nuclides contact.