(April 2015) Corruption in Brazil exists on all levels of society from the top echelons of political power (as seen in the MensalÃ£o Scandal and the Operation Car Wash and the Petrobras scandals) to the smallest municipalities.
Quartz sands, which are high in silica content, are used to make glass. When quartz sands are crushed they produce particles with sharp, angular edges that are sometimes used to make sandpaper for smoothing wood. Some quartz sand is found in the form of sandstone.
Report Abuse. 1  Glass Components. 2  According to Corning Inc. (Glass Works), it is sand (SIO2) and imagination) All commercial glasses use 40 - 60% of sand as their main component. 3  This Site Might Help You.  sand, they just melt any sand, the main element of sand is silica. paulw6182 Â· 6 years ago.