New Type of 'Opal' Formed by Common Seaweed Geology In
How Is An Opal Formed. Web chemically speaking, opal is a form of hydrated silica, with the chemical formula sio₂ · n h₂o.
Web chemically speaking, opal is a form of hydrated silica, with the chemical formula sio₂ · n h₂o.
Web chemically speaking, opal is a form of hydrated silica, with the chemical formula sio₂ · n h₂o. Web chemically speaking, opal is a form of hydrated silica, with the chemical formula sio₂ · n h₂o.