Phyllite and Tonalite Reserves

Reserves of Phyllite and Tonalite

The reserves of Phyllite and Tonalite are geographically distributed all over the world. Phyllite and Tonalite reserves play an important role in a country’s economic growth. Rocks are deposited according to the topography of the area. Some oldest rocks can be found in the Canadian Shield, Australia, Africa and in a few other old regions around the world. The ages of these felsic rocks are around 2.5 and 3.8 billion years. Learn about the countries with Phyllite and Tonalite reserves here.