Rocks and minerals

The earth's crust is made of rock masses. The highest mountains in Poland - the High Tatras and the Karkonosze Mountains in the Sudetes made of granite, The Eastern Tatras and the limestone belt between Kraków and Częstochowa, the highest parts of Lysogória are made of quartzites, rzadkie

Other optical properties

Other optical properties

Luminescence is called the phenomenon of "cold", i.e.. without increasing the temperature, body glow under the influence of various factors. Depending on the type of source that excites the glow, different types of luminescence are distinguished, like photoluminescence, wywołaną światłem dziennym

The fragility of minerals

The fragility of minerals.

Under the action of mechanical factors, such as hitting or pressing down with the blade of a knife in a certain direction, crushing, sudden cooling down or heating up, some minerals decompose properly into pieces bounded by flat surfaces. Własność tę

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, nie informujące o ich

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 …

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, które bezpośrednio lub po przeróbce mogą być

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, gdzie zostały przeobrażone w

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, a produkty