(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.
Sand will not burn. Sand can be turned to a glass like substance on heating to very high temperature. Yes, this is true. Certain types of sand have high levels of silica in them, and when it is heated, the silica sand melts, and becomes the liquid substance that will cool, harden, and become glass.