From Minerals to Rocks

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The planet on which we live can be seen as a large rock or, more precisely, as a large sphere composed of many types of rocks. These rocks are composed of tiny fragments of one or more materials. These materials are minerals, which result from the interaction of different chemical elements, each of which is stable only under specific conditions of pressure and temperature. Both rocks and minerals are studied in the branches of geology called petrology and mineralogy.

From a chemical perspective, a mineral is a homogeneous substance(=consisting of parts or elements that are all the same). A rock, on the other hand, is composed of different chemical substances, which, in turn, are components of minerals. The mineral components of rocks are also those of mountains. Thus, according to this perspective, it is possible to distinguish between rocks and minerals.

Temperature and pressure play a prominent part in rock transformation. Inside the Earth, liquid magma is produced. When it reaches the surface, it solidifies(=becomes hard). A similar process happens to water when it freezes upon reaching 32° F (0° C).

See also

Gems https://t.me/espedition/324

Rocks And Minerals https://t.me/espedition/342

EFL subset that concentrates more on language in context than on grammar and language structures. It covers topics from accounting or computer science to tourism and business management. "Specific" means the studying through a field that is already known and relevant to a student.