Quartz (Silica SiO2) is the most common mineral in the Earths crust. Quartz is found in sandstones, pegmatites granites, and other igneous rocks. It forms veins in the cracks of rocks.It forms veins in the cracks of rocks.
Potash and soda feldspar occur as essential constituents of granite, syenite and gneisses. However, workable deposits are found in pegmatite veins consisting mainly of feldspar.
Garnet is a mineral abrasive produced from naturally occurring almandite garnet. It is produced by processing beach sand and grading to exact specifications. Due to its low free silica,Garnet abrasive is widely used in sand/grit blasting
Mica is highly reflective, and its excellent cleavage allows it to split into thin sheets; these tough, flexible sheets are the distinguishing characteristic of the mineral group.