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 is a small historic unincorporated community located within Robbinsville Township (known as Washington Township until 2007) in Mercer County, New Jersey, United States. The area is served as United States Postal Service ZIP Code 08561. There are approximately 50 homes in the area, and as of the 2010 United States Census, the population for ZIP Code Tabulation Area 08561 was 226. The community, covering 570 acres (230 ha), was added to the National Register of Historic Places in 1992.