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diorite

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.

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Pyrolusite with limonite inclusions

Pyrolusite with limonite inclusions

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.
High Purity Peruvian Pyrite

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Mica

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Types of Garnet Minerals

Types of Garnet Minerals

This model summarizes the types of garnet group minerals, in which the aluminum garnet is usually red, and the calcium member is usually green. General formula: X, Y (SiO) X² = Mg², Ca², Fe², Mn², etc. Y³ = Al³, Fe³, Cr³, V³, etc. PyrAlSpites: aluminum garnet (Pyrope, Almandine, Spessartine) aluminum at the Y³. UGrAndites: Calcium at the X² locus of calcium garnet.
diorite

diorite

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

It 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.
The orthostone of the alkaline massif

The orthostone of the alkaline massif

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.
Syenite in alkaline rock mass

Syenite in alkaline rock mass

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.
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.
spinel crystal

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

silverite

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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UV-irradiated ruby

Ruby (Ruby) is a gem-grade corundum mineral variant, the chemical composition of alumina (Al₂ O), its unique red is due to the crystal structure contains trace amounts of chromium. Ruby is a very hard and durable gemstone, with a hardness of on the Mohs scale, second only to diamonds. The color of ruby ranges from pink to deep red, and the intensity of the color depends on the amount of chromium in the crystal structure. Ruby usually exhibits a hexagonal crystal structure, and the crystal is usually prismatic with a flat base end face. Due to its beautiful color and high hardness, rubies are widely used in jewelry, such as rings, necklaces and bracelets.
Quartz crystals of hydrothermal deposits

Quartz crystals of hydrothermal deposits

Quartz crystals from hydrothermal deposits are very important mineral specimens in geology. Quartz is a common mineral with the chemical composition of silicon dioxide (SiO₂), which is widely found in the earth's crust. In hydrothermal deposits, quartz crystals are usually precipitated from silicon-rich hydrothermal solutions under high temperature and high pressure conditions. These crystals can exhibit complex growth textures, such as oscillatory banded textures, mosaic textures, and concentric ring-banded textures. Quartz crystals often contain fluid inclusions, which can provide important information about the formation conditions of the deposit, such as temperature, pressure and fluid composition.

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