History of International Rock Day

Updated: Aug 26, 2020

Post By: @fedapaz | Source: Days of the Year

International Rock Day has been created so that people all around the world can learn more about rocks. It’s not about rock and roll music; it’s all about the stone variety! After all, rocks play a big role in the environment, and they have been used by humans for many purposes over the years.

Three major groups of rocks are defined: igneous, sedimentary, and metamorphic. The scientific study of rocks is called petrology, which is an essential component of geology. At a granular level, rocks are composed of grains of minerals, which, in turn, are homogeneous solids formed from a chemical compound that is arranged in an orderly manner.

The aggregate minerals forming the rock are held together by chemical bonds. The types and abundance of minerals in a rock are determined by the manner in which the rock was formed. Many rocks contain silica (SiO2); a compound of silicon and oxygen that forms 74.3% of the Earth’s crust. This material forms crystals with other compounds in the rock. The proportion of silica in rocks and minerals is a major factor in determining their name and properties.