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Ghelari Mine
The Ghelari mine was a large open pit, also an underground iron ore mine in the western of Romania in Hunedoara County, 20 km south-west of Hunedoara and 411 km north-west of the capital, Bucharest. Ghelari represents one of the largest iron ore reserves in Romania Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to ... having estimated reserves of 14 million tonnes of ore. The mine produced around 200,000 tonnes of iron ore/year. References {{DEFAULTSORT:Ghelari Mine Iron mines in Romania ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ghelari
Ghelari () is a commune in Hunedoara County, Transylvania, Romania. It is composed of four villages: Ghelari, Govăjdia (''Govasdia''), Plop, and Ruda. 2011 census results, , accessed 20 February 2020. The commune is located in the central part of the county, southwest of . Govăjdia village is the site of the |
Communes Of Romania
A commune (''comună'' in Romanian language, Romanian) is the lowest level of administrative subdivision in Romania. There are 2,686 communes in Romania. The commune is the rural subdivision of a Counties of Romania, county. Urban areas, such as towns and cities within a county, are given the status of ''Cities in Romania, city'' or ''Municipality in Romania, municipality''. In principle, a commune can contain any size population, but in practice, when a commune becomes relatively urbanised and exceeds approximately 10,000 residents, it is usually granted city status. Although cities are on the same administrative level as communes, their local governments are structured in a way that gives them more power. Some urban or semi-urban areas of fewer than 10,000 inhabitants have also been given city status. Each commune is administered by a mayor (''primar'' in Romanian). A commune is made up of one or more villages which do not themselves have an administrative function. Communes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hunedoara County
Hunedoara County () is a county (''județ'') of Romania, in Transylvania, with its capital city at Deva, Romania, Deva. The county is part of the Danube–Criș–Mureș–Tisa Euroregion. Name In Hungarian language, Hungarian, it is known as , in German language, German as , and in Slovak language, Slovak as . The county got its name from the city of Hunedoara (), which is the Romanian language, Romanian transliteration of the Hungarian language, Hungarian (, archaic: ), old name of the municipality. That most likely originated from the Hungarian language, Hungarian verb meaning 'to close' or 'to die', but may also come from wear the name of the Huns, who were headquartered near for a time and were the first to establish solid rule over the land since the Dacians. Geography This county has a total area of 7,063 km2. Mainly, the relief is made up of mountains, divided by the Mureș River valley which crosses the county from East to West. To the North side there are the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romania
Romania is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern and Southeast Europe. It borders Ukraine to the north and east, Hungary to the west, Serbia to the southwest, Bulgaria to the south, Moldova to the east, and the Black Sea to the southeast. It has a mainly continental climate, and an area of with a population of 19 million people. Romania is the List of European countries by area, twelfth-largest country in Europe and the List of European Union member states by population, sixth-most populous member state of the European Union. Europe's second-longest river, the Danube, empties into the Danube Delta in the southeast of the country. The Carpathian Mountains cross Romania from the north to the southwest and include Moldoveanu Peak, at an altitude of . Bucharest is the country's Bucharest metropolitan area, largest urban area and Economy of Romania, financial centre. Other major urban centers, urban areas include Cluj-Napoca, Timiș ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Ore
Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (, 72.4% Fe), hematite (, 69.9% Fe), goethite (, 62.9% Fe), limonite (, 55% Fe), or siderite (, 48.2% Fe). Ores containing very high quantities of hematite or magnetite (typically greater than about 60% iron) are known as natural ore or irect shipping ore and can be fed directly into iron-making blast furnaces. Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel — 98% of the mined iron ore is used to make steel. In 2011 the ''Financial Times'' quoted Christopher LaFemina, mining analyst at Barclays Capital, saying that iron ore is "more integral to the global economy than any other commodity, except perhaps oil". Sources Elemental iron is virtually absent o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magnetite
Magnetite is a mineral and one of the main iron ores, with the chemical formula . It is one of the iron oxide, oxides of iron, and is ferrimagnetism, ferrimagnetic; it is attracted to a magnet and can be magnetization, magnetized to become a permanent magnet itself. With the exception of extremely rare native iron deposits, it is the most magnetic of all the naturally occurring minerals on Earth. Naturally magnetized pieces of magnetite, called lodestone, will attract small pieces of iron, which is how ancient peoples first discovered the property of magnetism. Magnetite is black or brownish-black with a metallic luster, has a Mohs scale of mineral hardness, Mohs hardness of 5–6 and leaves a black streak (mineralogy), streak. Small grains of magnetite are very common in igneous rocks, igneous and metamorphic rocks. The chemical IUPAC name is iron(II,III) oxide and the common chemical name is ''ferrous-ferric oxide''. Properties In addition to igneous rocks, magnetite als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siderite
Siderite is a mineral composed of iron(II) carbonate (FeCO3). Its name comes from the Ancient Greek word (), meaning "iron". A valuable iron ore, it consists of 48% iron and lacks sulfur and phosphorus. Zinc, magnesium, and manganese commonly substitute for the iron, resulting in the siderite-smithsonite, siderite-magnesite, and siderite-rhodochrosite solid solution series. Siderite has Mohs hardness of 3.75 to 4.25, a specific gravity of 3.96, a white streak and a vitreous or pearly luster. Siderite is antiferromagnetic below its Néel temperature of that can assist in its identification. It crystallizes in the trigonal crystal system; crystals are rhombohedral in shape, typically with curved and striated faces. It also occurs in masses. Color ranges from yellow to dark brown or black, the latter being due to the presence of manganese. Siderite is commonly found in hydrothermal veins, and is associated with barite, fluorite, galena, and others. It is also a common ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limonite
Limonite () is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently written as , although this is not entirely accurate as the ratio of oxide to hydroxide can vary quite widely. Limonite is one of the three principal iron ores, the others being hematite and magnetite, and has been mining, mined for the production of iron since at least 400 BC. Names Limonite is named for the Ancient Greek word ( ), meaning "wet meadow", or ( ), meaning "marshy lake", as an allusion to its occurrence as in meadows and marshes. In its brown form, it is sometimes called brown hematite or brown iron ore. Characteristics Limonite is relatively density, dense with a specific gravity varying from 2.7 to 4.3.Northrop, Stuart A. (1959) "Limonite" ''Minerals of New Mexico'' (revised edition) University of New Mexico Press, Albuquerque, New Mexico, pp. 329–333, It is usually medium to dark yellowish brown in color. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hematite
Hematite (), also spelled as haematite, is a common iron oxide compound with the formula, Fe2O3 and is widely found in rocks and soils. Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of . It has the same crystal structure as corundum () and ilmenite (). With this it forms a complete solid solution at temperatures above . Hematite occurs naturally in black to steel or silver-gray, brown to reddish-brown, or red colors. It is mined as an important ore mineral of iron. It is electrically conductive. Hematite varieties include ''kidney ore'', ''martite'' ( pseudomorphs after magnetite), ''iron rose'' and ''specularite'' ( specular hematite). While these forms vary, they all have a rust-red streak. Hematite is not only harder than pure iron, but also much more brittle. The term ''kidney ore'' may be broadly used to describe botryoidal, mammillary, or reniform hematite. Maghemite is a polymorph of hematite (γ-) with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Ore
Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (, 72.4% Fe), hematite (, 69.9% Fe), goethite (, 62.9% Fe), limonite (, 55% Fe), or siderite (, 48.2% Fe). Ores containing very high quantities of hematite or magnetite (typically greater than about 60% iron) are known as natural ore or irect shipping ore and can be fed directly into iron-making blast furnaces. Iron ore is the raw material used to make pig iron, which is one of the main raw materials to make steel — 98% of the mined iron ore is used to make steel. In 2011 the ''Financial Times'' quoted Christopher LaFemina, mining analyst at Barclays Capital, saying that iron ore is "more integral to the global economy than any other commodity, except perhaps oil". Sources Elemental iron is virtually absent o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Pit
Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique that extracts rock or minerals from the earth. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface where the overburden is relatively thin. In contrast, deeper mineral deposits can be reached using underground mining. Open-pit mining is considered one of the most dangerous sectors in the industrial world. It causes significant effects to miners' health, as well as damage to the ecological land and water. Open-pit mining causes changes to vegetation, soil, and bedrock, which ultimately contributes to changes in surface hydrology, groundwater levels, and flow paths. Additionally, open-pit produces harmful pollutants depending on the type of mineral being mined, and the type of mining process being used. Extraction Miners typically drill a series of test holes to locate an underground ore body. From ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hunedoara
Hunedoara (; ; ) is a municipiu, city in Hunedoara County, Transylvania, Romania. It is located in southwestern Transylvania near the Poiana Ruscă Mountains, and administers five villages: Boș (''Bós''), Groș (''Grós''), Hășdat (''Hosdát''; ''Hochstätten''), Peștișu Mare (''Alpestes''), and Răcăștia (''Rákosd''). The city includes the most important Gothic architecture, Gothic-style secular building in Transylvania: the Hunyad Castle, which is closely connected with the Hunyadi family. The castle was destroyed by fire five times, but underwent many reconstructions from Austro-Hungarian and later Romanian authorities. Besides the castle, the town developed as a production center for iron and a market for the mountain regions nearby. During the 20th century, Hunedoara's population increased to 86,000 inhabitants. The city contained Hunedoara steel works, the largest steel works in Romania (until Galați took the lead), but activity gradually diminished after the Roma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
