How is quartz formed in nature?
The beautiful crystals of quartzbetter known to enthusiasts as rock crystal, form in the cracks of siliceous rocks by a process called “hydrothermal”. Indeed, water under high pressure and at high temperature has the power to partially dissolve silica.
The crystals form either by cooling molten minerals, or magmas, gaseous minerals or fumaroles (minerals formed at high temperatures); or from hydrothermal solutions (low temperature minerals).
Basically: The beautiful crystals of quartzbetter known to enthusiasts as “rock crystal”, form in the cracks of siliceous rocks by a process called “hydrothermal”.
Crystal growth: the formation of crystals. For one crystal may to form, a chemical element must be brought into contact with a liquid solution, usually water, and must be able to evolve under favorable conditions (temperature, pressure, evaporation time).
The conditions under which these crystals appeared have been studied for more than a century: to grow forming such elegant crystals, the quartz needs space, therefore a crack in the rock, and liquid rich in dissolved silica which circulates there.
It comes in the form either of large colorless, colored or smoky crystals, or of microscopic crystals with a translucent appearance. Constituting 12% (by mass) of the lithosphere, quartz is the most common mineral (oxygen and silicon are the first and second constituents respectively,…
Quartz is used in many fields: 1 the production of industrial floors (anti-wear); 2 water purification; 3 industrial sandblasting; 4 decorative material (parks, paths, car parks, etc.); 5 development of golf courses (bunkers); 6 watchmaking; 7 jewelry.
In northwestern Quebec, quartz is one of the main indicators of the presence of gold in its mass. Its color is mainly milky white or pale gray. Artificial quartz single crystal made by hydrothermal method (19.2 × 2.8 cm).
Quartz is a mineral made up of crystallized silica (rhombohedral structure) and present in a pure state (sometimes with a translucent appearance in rock crystal, most often opaque) or as a constituent of granites, sandstones or even sands. Pure, it can be colorless or colored by impurities (amethyst, citrine).