|Mineral 2||mineral species Galena|
|Mineral 3||mineral Calcite|
|Category||Rocks and minerals|
|Formula ZnS] SPHALERITE|
|S||Sulfur||Other no metal||33.06%|
Sphalerite is a mineral composed of sulfide zinc. It is a natural compound, very common and one of the most important sources of zinc-sulfur. Sphalerite exhibits colors ranging from yellow to brown and red to black. It can also be transparent or opaque. It is usually opaque and has a glassy transparency in some varieties. It has a hardness of 3.5 to 4 on the Mohs scale and its chemical composition is ZnS (Zinc Sulfide). Sphalerite is mainly formed in sedimentary or hydrothermal rocks containing sulfur and zinc, at relatively low temperatures. Sphalerite is widely used as a collectible mineral and as a semi-precious stone used in jewelry. It is also used in light industry as a raw material for reflective glass, for catalysis and other industrial uses. It is also used as an abundant and inexpensive source of zinc, which is an essential metal for many organisms. Zinc is an essential mineral for life and is used in many industrial applications.
|Formula PbS] GALENA|
|S||Sulfur||Other no metal||13.39%|
Galena is a mineral composed of a sulphide of lead, often used as the main component for the manufacture of shotgun pellets. It is a very compact, very shiny and opaque mineral that has a silvery gray color. Galena is very ductile and forms in a wide range of crystal geometries including cubic, octahedral, and rhombohedral shapes. It is mainly formed from metal sulphides such as galena, sphalerite and chalcopyrite. Its chemical composition is PbS with traces of arsenic, bismuth and zinc. Galena is mainly used to produce lead. It is also used in the manufacture of soldering materials, batteries, lubricants and paints. Galena is also used as a catalyst for lead chloride, which is then used for wastewater treatment. In addition, it is used in metallurgy to produce metal alloys.
|Formula CaCO3] CALCITE|
|O||Oxygen||Other no metal||47.95%|
|Ca||Calcium||Alkaline earth metal||40.04%|
|C||Carbon||Other no metal||12%|
Calcite is a common mineral in many sedimentary rocks and metamorphic rocks. It is also present in soils, marine sediments and lakes and saline lakes. It is the main component of limestone. Calcite is a mineral from the carbonate family. It has a hexagonal crystal structure and is transparent to translucent. Its color varies from white to light gray, yellow, orange and even red. It has an average hardness of 3 on the Mohs scale. Calcite is mainly produced by biogenic and chemical processes. When waters move through limestone and interact with carbon dioxide, calcite is formed. It can also be formed by volcanic processes, fault movements or soluble processes. Calcite is widely used in the chemical, food, medicine and building materials industry. One of the main uses of calcite is to produce lime for road surfacing. Calcite is also used for the manufacture of ceramic products. In addition, it is sometimes used in optical systems for its optical properties.
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