minerals are often found among those whose properties are in high demand not only in industry but also in medicine and cosmetics.These include a talc.This stone is not known as a mineral, but as a powder for children.
Oddly, but in nature it is perhaps the second most common after the quartz rocks.It should be noted that the talc - a stone only in the coarse-grained varieties, which are more commonly called soapstone.
Its color varies from green to pure white, regardless of the color it is notable for its pearly sheen.He is very soft to the touch and gives the impression of oiliness.Mohs hardness is rated as "1" (the minimum level).
as we know it - it's oily coarse powder, which is called "talc".This stone is widely distributed because the conditions of its formation geology fairly standard.
Speaking scientifically, its chemical name - sour magnesium metasilicate H2Mg3 (SiO3) 4.Crystallization takes place at its rhombic or monoclinic type.In nature, found in the form of a leaf or granular formations.
From a geological point of view, talc - a mineral secondary, as is formed after the chemical transformation bezalyuminievyh magnesium silicates.Often such a metamorphosis undergoes amphibole or pyroxene.
Very often in appearance it can be confused with the "parent", as it fully preserves its crystal structure, differing only in their chemical composition.
himself talc, which has photos in the article, is valued because of its color: the whiter it is, the more in demand material.It should be noted that the industry applies only the smallest talc, very high quality ground.
no need to think that this material is found in nature only in one form.There are several of its species vary considerably in their chemical composition and physical properties:
- minnesotaite (it contains up to 50% Fe).
- Villemseit (including nickel).
- steatite (which is often called wen), characterized by an extremely dense and massive structure.
- Malaga.Unlike its predecessor, it is a very fine fiber.
- Noble talc best variety, wherein the noble white.
Most talc mined in the United States.The large volumes of this breed was developed in Brazil, South Korea, Japan and Russia.
Since talc is used?This stone has been applied as a powder, "spacers" between the rubber things, as a filler and is widely used by perfumers to create new varieties of powder.
But he is most suitable for creating the finest examples of this type of cosmetics.By the way, use only by professional tailors 'chalk', which is based on all of the same talc.In industry, it is fine grained species used in the production of electrical insulators.
By the way, how much is talc?To date, its price is about 1000 Roubaud per kilogram of milled material quality.
