<P> Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO silicon -- oxygen tetrahedra , with each oxygen being shared between two tetrahedra , giving an overall chemical formula of SiO . Quartz is the second most abundant mineral in Earth 's continental crust , behind feldspar . </P>
<P> Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO silicon -- oxygen tetrahedra , with each oxygen being shared between two tetrahedra , giving an overall chemical formula of SiO . Quartz is the second most abundant mineral in Earth 's continental crust , behind feldspar . </P>
where can quartz be found in the world
where can quartz be found in the world
Earth 's continental crust
Earth 's continental crust