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25 relations: Arizona, Baryte, Brazil, Crystal structure, England, France, Germany, Hardness, Hematite, Hermann–Mauguin notation, Manganese, Manganese oxide, Marquette County, Michigan, Michigan, Mineral, Monoclinic crystal system, Ore, Oxide minerals, Psilomelane, Pyrolusite, Quartz, Specific gravity, Steelmaking, United States, Virginia.
Arizona
Arizona (Hoozdo Hahoodzo; Alĭ ṣonak) is a U.S. state in the southwestern region of the United States.
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Baryte
Baryte or barite (BaSO4) is a mineral consisting of barium sulfate.
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Brazil
Brazil (Brasil), officially the Federative Republic of Brazil (República Federativa do Brasil), is the largest country in both South America and Latin America.
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Crystal structure
In crystallography, crystal structure is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material.
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England
England is a country that is part of the United Kingdom.
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France
France, officially the French Republic (République française), is a sovereign state whose territory consists of metropolitan France in Western Europe, as well as several overseas regions and territories.
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Germany
Germany (Deutschland), officially the Federal Republic of Germany (Bundesrepublik Deutschland), is a sovereign state in central-western Europe.
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Hardness
Hardness is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion.
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Hematite
Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (Fe2O3), one of several iron oxides.
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Hermann–Mauguin notation
In geometry, Hermann–Mauguin notation is used to represent the symmetry elements in point groups, plane groups and space groups.
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Manganese
Manganese is a chemical element with symbol Mn and atomic number 25.
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Manganese oxide
Manganese oxide is any of a variety of manganese oxides and hydroxides.
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Marquette County, Michigan
Marquette County is a county located in the Upper Peninsula of the US state of Michigan.
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Michigan
Michigan is a state in the Great Lakes and Midwestern regions of the United States.
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Mineral
A mineral is a naturally occurring chemical compound, usually of crystalline form and not produced by life processes.
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Monoclinic crystal system
In crystallography, the monoclinic crystal system is one of the 7 crystal systems.
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Ore
An ore is an occurrence of rock or sediment that contains sufficient minerals with economically important elements, typically metals, that can be economically extracted from the deposit.
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Oxide minerals
The oxide mineral class includes those minerals in which the oxide anion (O2−) is bonded to one or more metal ions.
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Psilomelane
Psilomelane is a group name for hard black manganese oxides including hollandite and romanechite.
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Pyrolusite
Pyrolusite is a mineral consisting essentially of manganese dioxide (MnO2) and is important as an ore of manganese.
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Quartz
Quartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2.
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Specific gravity
Specific gravity is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.
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Steelmaking
Steelmaking is the process for producing steel from iron ore and scrap.
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United States
The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.
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Virginia
Virginia (officially the Commonwealth of Virginia) is a state in the Southeastern and Mid-Atlantic regions of the United States located between the Atlantic Coast and the Appalachian Mountains.
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References
[1] https://en.wikipedia.org/wiki/Romanèchite
