Quartz is hard and stable, so it is very resistant to weathering.
Grains of Quartz are the main constituent of sand on a beach.
Quartz is the main constituent of glass.
Quartz typically grows as six-sided crystals, but the crystals often grow together to form a complex mass.

Quartz is a compound made up of two elements. It has the chemical composition of SiO2, which means it has two oxygen atoms for each silicon atom. Quartz is also known as silicon dioxide.
Quartz can be found in a range of colours from clear through white, yellow, pink, violet, brown to almost black. The colours come from impurities incorporated into the crystal matrix.

Due to its many colours, quartz has been used as a semi-precious gemstone and in ornaments. The best known varieties of quartz are the violet coloured amethyst and golden brown coloured ‘tiger’s eye’.
Quartz has a number of important industrial uses, including glass making, ceramics and building materials. It is commonly used as an abrasive because it is hard and very resistant to chemical and physical breakdown.

Quartz is a common constituent of acid or felsic (containing feldspar and silica) igneous rocks such as coarse-grained granite or fine-grained rhyolite. Quartz is also commonly found in sedimentary rocks due to its hardness and resistance to breakdown and in many metamorphic rocks such as quartzite and gneiss.

 

 
 
            DE ICING SALT
             GRANITE & MARBLE
             MICA
             TALC
             BARIET
             QUARTZ
             ILMENITE
             CHROMITE
             BENTONITE
             PHOSPHATE
             WHITE GLASS SAND
             CALCIUM CARBONATE