Quarry Quartz

Quarry

A quarry is a place where rock and earth materials – such as limestone, marble, granite, gravel, and sand – are excavated. The operation of quarries is regulated in some jurisdictions to manage their safety risks and reduce their environmental impact.

Quartz

Quartz is a hard mineral composed of silica (silicon dioxide). Its atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen atom being shared between two tetrahedra, giving an overall chemical formula of SiO2. Therefore, quartz is classified structurally as a framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most common mineral or mineral group in Earth's lithosphere, comprising about 12% by mass.

quarry

Noun

1. A site for mining stone, such as limestone, or slate.

Verb

1. To obtain (or mine) stone by extraction from a quarry.
2. To extract or slowly obtain by long, tedious searching.

quartz

Noun

1. The most abundant mineral on the earth's surface, of chemical composition silicon dioxide, SiO2. It occurs in a variety of forms, both crystalline and amorphous. Found in every environment.
2. Crystal meth: methamphetamine hydrochloride.