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Ljubija Mine
The Ljubija mine is a large open pit mine Ljubija ore field, Ljubija, Prijedor, Republika Srpska, Bosnia and Herzegovina located in Prijedor, in the western part of Bosnia and Herzegovina in Republika Srpska, 48 km South - East of Banja Luka and 250 km South - East of the ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prijedor
Prijedor ( sr-cyrl, Приједор, ) is a city and municipality located in the Republika Srpska entity of Bosnia and Herzegovina. As of 2013, it has a population of 89,397 inhabitants within its administrative limits. Prijedor is situated in the north-western part of the Bosanska Krajina geographical region. Prijedor is known for its mixed religious heritage comprising Eastern Orthodox Christianity, Roman Catholicism and Islam. Historic buildings from the Ottoman and Austrian-Hungarian periods are a feature of the urban landscape. The city underwent extensive renovation between 2006–2009. Geography The town of Prijedor, within the municipality of Prijedor, is located in the north-western part of Bosnia and Herzegovina, on the banks of the Sana and Gomjenica rivers, and at the south-western hills of the Kozara mountain. The area of the municipality is . The town is situated at 44°58'39" N and 16°42'29" E, at an altitude of above sea level. It is traditionally a part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banja Luka
Banja Luka ( sr-Cyrl, Бања Лука, ) or Banjaluka ( sr-Cyrl, Бањалука, ) is the second largest city in Bosnia and Herzegovina and the largest city of Republika Srpska. Banja Luka is also the ''de facto'' capital of this entity. It is the traditional centre of the densely-forested Bosanska Krajina region of northwestern Bosnia. , the city proper has a population of 138,963, while its administrative area comprises a total of 185,042 inhabitants. The city is home to the University of Banja Luka and University Clinical Center of the Republika Srpska, as well as numerous entity and state institutions for Republika Srpska and Bosnia and Herzegovina respectively. The city lies on the Vrbas river and is well known in the countries of the former Yugoslavia for being full of tree-lined avenues, boulevards, gardens, and parks. Banja Luka was designated European city of sport in 2018. Name The name ''Banja Luka'' was first mentioned in a document dated to 6 February 149 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
6th Century BC
The 6th century BC started the first day of 600 BC and ended the last day of 501 BC. In Western Asia, the first half of this century was dominated by the Neo-Babylonian Empire, which had risen to power late in the previous century after successfully rebelling against Assyrian rule. The Kingdom of Judah came to an end in 586 BC when Babylonian forces under Nebuchadnezzar II captured Jerusalem, and removed most of its population to their own lands. Babylonian rule was ended in the 540s by Cyrus, who founded the Persian Empire in its stead. The Persian Empire continued to expand and grew into the greatest empire the world had known at the time. In Iron Age Europe, the Celtic expansion was in progress. China was in the Spring and Autumn period. *Mediterranean: Beginning of Greek philosophy, flourishes during the 5th century BC *The late Hallstatt culture period in Eastern and Central Europe, the late Bronze Age in Northern Europe *East Asia: the Spring and Autumn period. Conf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluorite
Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2. It belongs to the halide minerals. It crystallizes in isometric cubic habit, although octahedral and more complex isometric forms are not uncommon. The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 4 as fluorite. Pure fluorite is colourless and transparent, both in visible and ultraviolet light, but impurities usually make it a colorful mineral and the stone has ornamental and lapidary uses. Industrially, fluorite is used as a flux for smelting, and in the production of certain glasses and enamels. The purest grades of fluorite are a source of fluoride for hydrofluoric acid manufacture, which is the intermediate source of most fluorine-containing fine chemicals. Optically clear transparent fluorite lenses have low dispersion, so lenses made from it exhibit less chromatic aberration, making them valuable in microscopes and telescopes. Fluorite optics ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baryte
Baryte, barite or barytes ( or ) is a mineral consisting of barium sulfate ( Ba S O4). Baryte is generally white or colorless, and is the main source of the element barium. The ''baryte group'' consists of baryte, celestine (strontium sulfate), anglesite (lead sulfate), and anhydrite (calcium sulfate). Baryte and celestine form a solid solution (Ba,Sr)SO4. Names and history The radiating form, sometimes referred to as ''Bologna Stone'', attained some notoriety among alchemists for specimens found in the 17th century near Bologna by Vincenzo Casciarolo. These became phosphorescent upon being calcined. Carl Scheele determined that baryte contained a new element in 1774, but could not isolate barium, only barium oxide. Johan Gottlieb Gahn also isolated barium oxide two years later in similar studies. Barium was first isolated by electrolysis of molten barium salts in 1808 by Sir Humphry Davy in England. The American Petroleum Institute specification API 13/ ISO 135 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead
Lead is a chemical element with the Symbol (chemistry), symbol Pb (from the Latin ) and atomic number 82. It is a heavy metals, heavy metal that is density, denser than most common materials. Lead is Mohs scale of mineral hardness#Intermediate hardness, soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable nuclide, stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and base (chemistry), bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table. In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size.The elements are from different metal groups. See periodic table. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity ( electrowinning). Zinc is an essential trace element for humans, animals, plants and for microorganisms and is necessary for prenatal and postnatal development. It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sarajevo
Sarajevo ( ; cyrl, Сарајево, ; ''see names in other languages'') is the capital and largest city of Bosnia and Herzegovina, with a population of 275,524 in its administrative limits. The Sarajevo metropolitan area including Sarajevo Canton, East Sarajevo and nearby municipalities is home to 555,210 inhabitants. Located within the greater Sarajevo valley of Bosnia, it is surrounded by the Dinaric Alps and situated along the Miljacka River in the heart of the Balkans, a region of Southern Europe. Sarajevo is the political, financial, social and cultural center of Bosnia and Herzegovina and a prominent center of culture in the Balkans. It exerts region-wide influence in entertainment, media, fashion and the arts. Due to its long history of religious and cultural diversity, Sarajevo is sometimes called the "Jerusalem of Europe" or "Jerusalem of the Balkans". It is one of a few major European cities to have a mosque, Catholic church, Eastern Orthodox church, and syn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mindat , an online mineralogy database
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Mindat may refer to: Places in Burma/Myanmar * Mindat, Chin State, in Burma * Mindat Township, in Burma * Mindat District in Chin State, Burma Other uses * Mindat Min, a Burmese prince *Mindat.org Mindat.org is a non-commercial online database, claiming to be the largest mineral database and mineralogy, mineralogical reference website on the Internet. It is used by professional mineralogists, geologists, and amateur mineral collecting, mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Town
A town is a human settlement. Towns are generally larger than villages and smaller than city, cities, though the criteria to distinguish between them vary considerably in different parts of the world. Origin and use The word "town" shares an origin with the German language, German word , the Dutch language, Dutch word , and the Old Norse . The original Proto-Germanic language, Proto-Germanic word, *''tūnan'', is thought to be an early borrowing from Proto-Celtic language, Proto-Celtic *''dūnom'' (cf. Old Irish , Welsh language, Welsh ). The original sense of the word in both Germanic and Celtic was that of a fortress or an enclosure. Cognates of ''town'' in many modern Germanic languages designate a fence or a hedge. In English and Dutch, the meaning of the word took on the sense of the space which these fences enclosed, and through which a track must run. In England, a town was a small community that could not afford or was not allowed to build walls or other larger fort ... [...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 of extracting rock or minerals from the earth from an open-air pit, sometimes known as a borrow. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface. It is applied to ore or rocks found at the surface because the overburden is relatively thin or the material of interest is structurally unsuitable for tunnelling (as would be the case for cinder, sand, and gravel). In contrast, minerals that have been found underground but are difficult to retrieve due to hard rock, can be reached using a form of underground mining. To create an open-pit mine, the miners must determine the information of the ore that is underground. This is done through drilling of probe holes in the ground, then plotting e ... [...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 (greater than about 60% iron) are known as "natural ore" or "direct shipping ore", meaning they 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 Metallic iron is virtually unk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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