From Wikipedia, the free encyclopedia. The chemical compound silicon dioxide, also known as silica, is the oxide of silicon, chemical formula SiO2.It is found in nature in several forms, including quartz and opal. In fact, silica has 17 crystalline forms.he chemical compound silicon dioxide, also known as silica, is the oxide of silicon, chemical formula SiO2.
Windsor is home to 217,188 people, according to the 2016 census. Windsor's population has grown by three per cent in the past five years, but the city still fell behind the national growth rate, according to data collected during the 2016 census.
Windsor, New York. For other uses, see Windsor, New York (disambiguation). Windsor is a town in Broome County, New York, United States. The population was 6,247 at the 2010 census. The town is on the south border of the county and is east of Binghamton. The town includes the village of Windsor, located on the Susquehanna River. The town of Windsor is the largest in the county.