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.
New Windsor is a town in Carroll County, Maryland, United States. The population was 1,303 at the 2000 census. It is a suburb of Westminster, which is about 6 miles east of New Windsor on Maryland Route 31. It contains many neighborhoods, the most known being the 100-acre Atlee Ridge, or The Ridge.. New Windsor was laid out in 1797 and originally named Sulphur Springs.