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Laita Limestone

Laita Limestone

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Leta limestone is a geological formation mainly distributed in Austria, Czech Republic, Hungary, and Poland. This type of limestone was formed during the Middle Miocene to Late Miocene period (approximately 16 to 7.2 million years ago). The name Laita Limestone comes from the Laita Mountains in Austria. This limestone is known for its rich fossil content, including sharks, rays, manatees, and whales.

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Pyrolusite (pyrolusite), the composition of manganese dioxide, is a common manganese mineral. Pyrolusite containing 63.19% manganese is an important manganese ore. Pyrolusite is very soft, its color is light gray to black, with a metallic luster. Pyrolusite is generally massive or kidney-like or earthy, sometimes with a radioactive fibrous morphology. Interestingly, some pyrolusite also exhibits a dendritic attachment to the rock surface, known as pseudoliths. Pyrolusite is other manganese ore into, in the swamps, lakes and other sediments can also form pyrolusite.
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This pyrite is known for its brass-colored luster and distinctive striated surface. Pyrite derives its name from the Greek word pyr, which means fire, because it produces sparks when it collides with other minerals or metals. This pyrite is usually in the shape of a cube, with a highly glossy surface, giving a mirror-like visual effect. Not only are they of great value in mineralogical research, they are also favored by collectors and mineral lovers for their beautiful appearance.
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Types of Garnet Minerals

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diorite

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Diorite is a representative rock of neutral deep crystal rock, and it is also one of the main rock types in granite stone. It is mainly composed of plagioclase (medium-more feldspar) and one or several dark minerals, of which the total amount of dark minerals is generally about 20-35%. No or only a small amount of potassium feldspar, generally not more than 10% of the total feldspar. Does not contain or contains very little quartz, the amount of which does not exceed 5% of the total amount of light-colored minerals. Dark minerals are mainly amphibole, sometimes pyroxene and biotite. The accessory minerals are mainly apatite, magnetite, ilmenite and titanite.
synenite

synenite

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Syenite is a kind of magmatic rock, which belongs to neutral deep intrusive rock. light gray, with grainy, porphyritic structure. The content of silica (about 60%) and the diorite is quite, but the alkali (sodium oxide, potassium oxide) is slightly higher than the diorite. It is mainly composed of feldspar, hornblende and biotite, with no or very little quartz. Alkaline feldspar (usually orthoclase, microcline, striated feldspar) accounts for more than 70% of the feldspar. It is often a small rock strain, which forms a complex with basic rocks and alkaline rocks.
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Ore-bearing fibrous calcite

Ore-bearing fibrous calcite

Calcite is a calcium carbonate mineral, the most common natural calcium carbonate is it. Therefore, calcite is a widely distributed mineral. Calcite is a stable form of calcium carbonate under normal temperature and pressure, soft, white or gray or transparent, calcite crystal shape is varied, their aggregates can be a cluster of crystals, can also be granular, massive, fibrous, milky, earthy and so on. Knocking calcite can get a lot of square pieces, hence the name calcite.
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spinel crystal

Spinel (Spinel) is a beautiful and durable gem mineral, which usually occurs together with the marble parent rock (Marble matrix), forming a unique ore combination. The chemical composition of spinel is magnesium aluminum oxide (MgAl₂ Ogo), which has a variety of colors, from red, blue, green to colorless. Spinel crystals have a high degree of transparency and a bright color, usually in the shape of octahedra or rhombohedra.
silverite

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Pyroxene ore is an ore containing metallic silver. The symbol of silver in the periodic table of chemical elements is Ag, and the atomic number is 47. It is a soft, white, shiny precious metal that occurs primarily in mineral form in nature, such as silver ore.
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