GENERAL GEOLOGY

Detailed explanation-1: -Quartz is our most common mineral. Quartz is made of the two most abundant chemical elements on Earth: oxygen and silicon. Atoms of oxygen and silicon join together as tetrahedrons (three sided pyramids). These stack together to build crystals.

Detailed explanation-2: -The term arenite applies to a so-called clean sandstone, meaning one with less than 15% silt and clay. Considering the sand-sized grains only, arenites with 90% or more quartz are called quartz arenites.

Detailed explanation-3: -Most Common Mineral of the Crust If you consider it as one mineral, feldspar is the most common mineral on earth, and quartz is the second most common.

Detailed explanation-4: -The Mineralogy of Sedimentary Rocks Quartz, because it is stable under conditions present at the surface of the Earth, and because it is also a product of chemical weathering, is the most abundant mineral in sandstones and the second most abundant mineral in mudrocks.