Its main component is silicon oxide, and there are some other components. Let's just set its density at 2.5g/cm?

Then the weight of the floor tile should be

60*60* 1*2.5=9000 grams, or 9 kilograms.

However, it should be considered that floor tiles are porous, and the weight will be different according to the density. 9 kg is the weight without pores, which is generally lighter than this.