Quartz
mineral composed of silicon and oxygen atoms in a continuous framework of SiO₄ silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO₂
Could Quartz be useful to humans if plants died off and there was no oxygen?
Plants produce oxygen which is needed by humans to survive. Quartz is a hard mineral substance made of several elements. Quartz is composed of silicon and oxygen. Quartz can be melted at high temperatures.
What are the constituents elements of quartz? Is oxygen included in #1?