CHEMICAL FORMULAS OF MINERALS

CHEMICAL FORMULAS OF MINERALS

The chemical formula of a mineral expresses its chemical composition, determined on a qualitative basis, followed by quantitative chemical analysis. The quantitative relations between the atoms of the elements included in the minerals give empirical formulas, not informing about them

IZOMORFIZM – MIXED CRYSTALS

IZOMORFIZM – MIXED CRYSTALS

The chemical composition of individual minerals can be determined by a chemical formula. However, there are also such minerals, whose chemical composition varies within certain limits. An example would be the mineral olivine, whose chemical composition can be …

PRECIOUS STONES OCCURRING IN POLAND

PRECIOUS STONES OCCURRING IN POLAND

Precious stones occurring in Poland include amber, known for centuries and collected by the Baltic Sea and the Kurpie region, as well as chrysoprase and nephrites found in Lower Silesia., varieties of quartz and …

OCCURRENCE OF PRECIOUS STONES

OCCURRENCE OF PRECIOUS STONES

Of the primary deposits of precious stones, pegmatite deposits are the most common. However, only some of them contain valuable gemstones. Such deposits are the pegmatites of the Urals, abundant in various stones. Discovery at the end of the 18th century. …

MINERAL RESOURCES

MINERAL RESOURCES

A mineral deposit is such a natural concentration of a mineral resource or a set of mineral resources, the exploitation of which is profitable. A mineral is a mineral or group of minerals found in nature, which can be directly or after processing …

TRANSFORMED ROCKS

TRANSFORMED ROCKS

The third group of rocks, apart from igneous and sedimentary rocks, are transformed rocks (metamorphic). They were formed from pre-existing igneous or sedimentary rocks, which got into the deeper parts of the earth's crust, where they were transformed into …

RESIDUAL ROCKS

RESIDUAL ROCKS

Rocks on the surface of the Earth are weathering, i.e.. mechanical and chemical deterioration due to the action of weather conditions. The material formed as a result of weathering may remain in the place where it was created, or it may be …

MAGMA ROCKS

MAGMA ROCKS

The first material in the earth's crust are crystalline rock masses, mainly composed of silicates. They were formed by solidifying a hot silicate alloy, from deeper parts of the earth's crust. This silicate alloy is called magma, and the products …