No, this isn’t about Dwayne Johnson or about the apostle Peter. It’s about rocks. Stones. Those hard things that can be found on the ground. Yes, they have their own international day. July the 13th. Why? Well, International Rock Day has been created so that people all around the world can learn more about rocks and their variety. After all, stones play a big role in the environment, and they have been used by humans for many purposes over the years.
The rock or stone is a naturally occurring solid aggregate of one or more minerals or mineraloids. For example, the common rock granite is a combination of the quartz, feldspar and biotite minerals. The Earth’s outer solid layer, the lithosphere, is made of rock. Rocks have been used by mankind throughout history. From the Stone Age, rocks have been used for tools. The minerals and metals found in rocks have been essential to human civilization.
Read more about how to celebrate International Rock Day and learn more about rocks by visiting the following websites: