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 …
Tag: Minerals
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 color of minerals
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, not informing about them …
Chemical properties of gemstones
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, 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 …
