andesite mineral stone
Andesite, a neutral erupting igneous rock with a grayish black or dark gray background color and with white or light gray spots (porphyry). These are usually plagioclase and may also contain dark minerals such as amphibole or pyroxene. Anshan magma is usually formed when the oceanic plate subducted under the continental plate.
meteorite sample
This meteorite contains about 21.3 percent iron and is usually in the form of tiny silver metal flakes scattered in the rock matrix. The samples are usually black in color, and the surface may have weathered iron oxides or other silicate minerals (such as olivine and superbasic pyroxene), often with a molten shell.
Rock 3D Model
a piece of rock
calcite
Calcite chemical formula for CaCO, is the most widely distributed carbonate minerals in nature, belongs to the trigonal system (rhombohedral system), because the crystal is often a rhombohedral (rhombohedral) morphology and named. Its English name "Calcite" is derived from the Latin "calx" (meaning lime), which is the main component of limestone and marble.
Limonite-encapsulated plate-like barite crystals
The limonite-coated plate-like barite is a typical mineral assemblage under the action of epithermal or hydrothermal fluid, which combines the industrial value of barite with the oxidation characteristics of limonite.
Lavolite with color effect
Lazarite is a kind of mineral in the family of plagioclase (Plagioclase Feldspar). It is a series of similar substances with chemical composition of NaAlSiΑ O₂-CaAl₂ Si₂ O₂, mainly rich in sodium. Its name is derived from the Canadian Labrador region (Labrador), is a common mineral in igneous rocks (such as basalt, granite) and metamorphic rocks. Usually gray, black, green or brown, transparent to translucent. Glass luster, cleavage surface is pearl luster. The crystal system belongs to triclinic system with Mohs hardness of 6-6.5.
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
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.
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.
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.
banded aralite containing silicon carbide
Acid salt minerals. The composition is CaCO3. Also known as aragonite, and calcite into a homogeneous multi-like. The orthorhombic crystal system, the crystal is columnar or spear-shaped, common false hexagonal symmetry of the three-linked crystal. The aggregate is mostly shell-like, oolitic, bean-like, spherical, etc. Usually white, yellow-white. Glass luster, the fracture is grease luster. with incomplete plate cleavage. Shell-shaped fracture. Mohs hardness 3.5~4.5. Specific gravity 2.9~3.0. In the nature of the unstable arangite, often transformed into calcite. Silicon carbide is a semiconductor that occurs in nature in the form of the extremely rare mineral moissanite.
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
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.
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 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.
Polished Amethyst
Polished amethyst is a popular gemstone specimen. Amethyst is a purple variety of quartz that ranges in color from light purple to dark purple and is determined primarily by the presence of iron and other trace elements. Quartz is a common mineral with the chemical composition of silicon dioxide (SiO₂), which is widely found in the earth's crust. Polished amethyst and quartz are often used in jewelry and ornaments because their luster and beautiful color make them very attractive.
Gurasada agate
Gurasada agate is a beautiful mineral specimen from the Gurasada region of Romania. Agate is a ribbon-shaped chalcedony (a subspecies of quartz), the strips of which can be parallel or concentric. This agate is usually embedded in diabase, a fine to medium-grained intrusive igneous rock that is usually dark gray to black in color. This polished agate specimen measures 9 x 8.5 x 8cm and has a chemical composition of silicon dioxide (SiO₂).
Peruvian cubic pyrite
Peruvian pyrite is mainly produced in Peru's famous Huanzala mine. 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.
calcite
Calcite (Calcite) is a common calcium carbonate mineral with a chemical formula of CaCO. It is widely found in sedimentary rocks, metamorphic rocks and igneous rocks. Calcite has unique optical properties such as birefringence and birefringence. Veins usually form when calcite is intergrown with ore minerals. In these veins, calcite may be the main component, but may also contain other valuable ore minerals, such as pyrite, sphalerite, barite, etc. These ore minerals are usually formed in low temperature hydrothermal veins.
Basalt of the Canary Islands, Spain
Basalt is a volcanic magmatic rock with relatively low silicon content. The rock is usually dark black. This basalt has no visible crystals. Therefore, it is made of volcanic glass and microlith (crystals that cannot be distinguished by the naked eye).
fault breccia
Fault breccia is formed in the fault zone. They consist of angular rock fragments from rocks on either side of the fault. These angular detritus elements are usually surrounded by cements, usually calcite or siliceous, which are deposited in pores created by fragmentation caused by fault replay.
clinopyroxene
Pyroxene (pyroxene,augite) is a common single-chain silicate rock-forming mineral, which widely exists in igneous rocks and metamorphic rocks. The main framework is composed of silicon-oxygen molecular chains. The crystal structure is monoclinic or orthorhombic, and the main component is XY(Si,Al)2O6, where X represents calcium, sodium, magnesium and divalent iron, there are also some kinds of ions such as zinc, manganese and lithium. Y represents smaller ions such as chlorine, aluminum, trivalent iron, vanadium, scandium, etc.
Uranium bearing igneous rock
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