When we walk on the earth's surface we hardly pay attention to the ground we walk on, sand, earth, stones … However, if we take a closer look, we will notice small differences, at first glance, in size, color or texture. This is due to the fact that the soil is made up of different materials, whose differences in origin and composition are responsible for the variations in the characteristics of the terrain.
In geology and its branches these materials are called rocks or minerals. Can you distinguish them? Do you know exactly their differences? In the following Green Ecologist article we explain the difference between mineral, rock and crystal.
We call mineral a natural and inorganic solid material with a determined chemical composition and a definite crystal structure. Its origin depends on the chemical elements and the physical, chemical and thermodynamic characteristics of the natural system in which its formation takes place, regardless, unlike rocks, geological phenomena. Minerals can be classified based on their chemical composition and internal structure in:
Most minerals are made up of various chemical elements, which can be located in two ways:
It is important to emphasize that minerals must have a defined chemical composition. For example, graphite and diamond have the same composition, however, as their molecular arrangement is different, two different minerals are considered.
The rocks are the most common and abundant material on Earth. They are the result of certain meteorological phenomena, so that their size, shape and composition are a reflection of the geological processes that created it. This fact makes them the subject of numerous studies and allows researchers to obtain the information necessary for understanding our planet and for application in the search for mineral and energy resources.
Geologists divide rocks into three large groups: igneous, sedimentary and metamorphic. Here we explain the characteristics of each of them:
Rocks, in turn, are made up of heterogeneous mixtures of other materials, generally grains or crystals of one or more minerals. When it is composed of a single mineral it is known as monominerálica rock, whereas, when it is composed of several types of minerals it is called polyminerálica.
Thus, we can say that while minerals are stable in their atomic number and chemical formula, rocks are made up of a combination of mineraloids or minerals.
The crystals are homogeneous solid materials with a defined chemical composition and an ordered internal structure that give rise to very striking geometric shapes, being recognized, most of the time, for their beauty and symmetry.
These formations are due to the fact that, when a crystal originates, a process known as crystallogenesis, the chemical elements come together to form a crystal lattice under specific conditions of time, space, pressure and temperature.
Depending on how these are combined crystallization factors we will have:
Therefore, we can say that crystals are a kind of mineral, in fact, most minerals are crystals.
If you want to read more articles similar to Difference between mineral, rock and crystal, we recommend that you enter our category of Curiosities of the Earth and the universe.