95-423: Horton Plains National Park ( Sinhala : හෝර්ටන් තැන්න ජාතික උද්යානය , romanized: Hortan Thanna Jathika Udyanaya ) is a national park in the central highlands of Sri Lanka that was designated in 1988. It is located at an elevation of 2,100–2,300 m (6,900–7,500 ft) and encompasses montane grassland and cloud forest . It is rich in biodiversity and many species found here are endemic to
190-528: A 33% to 40% recovery of magnetite by weight, to produce a concentrate grading in excess of 64% iron by weight. The typical magnetite iron ore concentrate has less than 0.1% phosphorus , 3–7% silica , and less than 3% aluminium . As of 2019, magnetite iron ore is mined in Minnesota and Michigan in the United States , eastern Canada , and northern Sweden . Magnetite-bearing banded iron formation
285-662: A Dravidian origin for this word. ), dola for pig in Vedda and offering in Sinhala. Other common words are rera for wild duck, and gala for stones (in toponyms used throughout the island, although others have also suggested a Dravidian origin). There are also high frequency words denoting body parts in Sinhala, such as olluva for head, kakula for leg, bella for neck and kalava for thighs, that are derived from pre-Sinhalese languages of Sri Lanka. The oldest Sinhala grammar, Sidatsan̆garavā , written in
380-696: A benchmark to be followed by the rest of the industry. Singapore Mercantile Exchange (SMX) has launched the world's first global iron ore futures contract, based on the Metal Bulletin Iron Ore Index (MBIOI) which uses daily price data from a broad spectrum of industry participants and independent Chinese steel consultancy and data provider Shanghai Steelhome's widespread contact base of steel producers and iron ore traders across China. The futures contract has seen monthly volumes over 1,500,000 t (1,500,000 long tons; 1,700,000 short tons) after eight months of trading. This move follows
475-537: A foliose lichen genus belonging to the family Parmeliaceae , which had not been recorded in Sri Lanka before, was discovered here in 2007. There are conflicting views on how the grasslands of the park came into being, whether man-made or natural. It is now believed that the grasslands on the dry slopes were created by forest clearance and fires while grasslands in low-lying areas were naturally created by wet conditions, frost and soil erosion . The vertebrate fauna of
570-722: A period of prior bilingualism: "The earliest type of contact in Sri Lanka, not considering the aboriginal Vedda languages, was that which occurred between South Dravidian and Sinhala. It seems plausible to assume prolonged contact between these two populations as well as a high degree of bilingualism. This explains why Sinhala looks deeply South Dravidian for an Indo-Aryan language. There is corroboration in genetic findings." In addition to many Tamil loanwords , several phonetic and grammatical features also present in neighbouring Dravidian languages set modern spoken Sinhala apart from its Northern Indo-Aryan relatives. These features are evidence of close interactions with Dravidian speakers. Some of
665-424: A premium price. Due to the high density of hematite relative to associated silicate gangue, hematite beneficiation usually involves a combination of beneficiation techniques. One method relies on passing the finely-crushed ore over a slurry containing magnetite or other agent such as ferrosilicon which increases its density. When the density of the slurry is properly calibrated, the hematite will sink and
760-453: A relatively low-grade ore, they are also inexpensive to collect, as they do not have to be mined. Because of this, companies such as Magnetation have started reclamation projects where they use iron ore tailings as a source of metallic iron. The two main methods of recycling iron from iron ore tailings are magnetizing roasting and direct reduction. Magnetizing roasting uses temperatures between 700 and 900 °C (1,292 and 1,652 °F) for
855-512: A result, Horton Plains and Peak Wilderness became isolated from other forest and grassland areas. Potatoes were cultivated in the grasslands but planting ceased in 1977. After being declared a National Park, these areas were reinstated as grasslands. Tourism-related issues such as plant removal, littering, fires and noise pollution are major conservation issues. Gem mining, timber logging , the collection of plants for ornamental and medicinal purposes, encroachment, poaching and vehicle traffic are
950-616: A source of iron ore. Prior to the industrial revolution, most iron was obtained from widely-available goethite or bog ore , for example, during the American Revolution and the Napoleonic Wars . Historically, much of the iron ore utilized by industrialized societies has been mined from predominantly hematite deposits with grades of around 70% Fe. These deposits are commonly referred to as "direct shipping ores" or "natural ores". Increasing iron ore demand, coupled with
1045-606: A switch to index-based quarterly pricing by the world's three largest iron ore miners— Vale , Rio Tinto , and BHP —in early 2010, breaking a 40-year tradition of benchmark annual pricing. Iron is the most abundant element on earth but not in the crust. The extent of the accessible iron ore reserves is not known, though Lester Brown of the Worldwatch Institute suggested in 2006 that iron ore could run out within 64 years (that is, by 2070), based on 2% growth in demand per year. Geoscience Australia calculates that
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#17327797447631140-418: A time of under 1 hour to produce an iron concentrate (Fe 3 O 4 ) to be used for iron smelting. For magnetizing roasting, it is important to have a reducing atmosphere to prevent oxidization and the formation of Fe 2 O 3 because it is harder to separate as it is less magnetic. Direct reduction uses hotter temperatures of over 1,000 °C (1,830 °F) and longer times of 2–5 hours. Direct reduction
1235-655: A typically titanium -bearing magnetite, often with vanadium . These ores form a niche market, with specialty smelters used to recover the iron, titanium, and vanadium. These ores are beneficiated essentially similarly to banded iron formation ores, but usually are more easily upgraded via crushing and screening . The typical titanomagnetite concentrate grades 57% Fe, 12% Ti, and 0.5% V 2 O 5 . For every one ton of iron ore concentrate produced, approximately 2.5–3.0 tons of iron ore tailings will be discharged. Statistics show that there are 130 million tons of iron ore tailings discharged every year. If, for example,
1330-659: A value of $ 2.3 billion. 46% of Canada's iron ore comes from the Iron Ore Company of Canada mine, in Labrador City , Newfoundland , with secondary sources including the Mary River Mine in Nunavut . According to the U.S. Geological Survey's 2021 Report on iron ore, India is estimated to produce 59,000,000 t (58,000,000 long tons; 65,000,000 short tons) of iron ore in 2020, placing it as
1425-463: Is a conspicuous example of the linguistic phenomenon known as diglossia . Sinhala ( Siṁhala ) is a Sanskrit term; the corresponding Middle Indo-Aryan ( Eḷu ) word is Sīhala . The name is a derivative of siṁha , the Sanskrit word for 'lion'. The name is sometimes glossed as 'abode of lions', and attributed to a supposed former abundance of lions on the island. According to
1520-511: Is a high-volume, low-margin business, as the value of iron is significantly lower than base metals. It is highly capital intensive, and requires significant investment in infrastructure such as rail in order to transport the ore from the mine to a freight ship. For these reasons, iron ore production is concentrated in the hands of a few major players. World production averages 2,000,000,000 t (2.0 × 10 long tons; 2.2 × 10 short tons) of raw ore annually. The world's largest producer of iron ore
1615-599: Is an Indo-Aryan language primarily spoken by the Sinhalese people of Sri Lanka , who make up the largest ethnic group on the island, numbering about 16 million. Sinhala is also spoken as the first language by other ethnic groups in Sri Lanka, totalling about 2 million speakers as of 2001. It is written using the Sinhala script , which is a Brahmic script closely related to the Grantha script of South India. Sinhala
1710-484: Is divided into four epochs: The most important phonetic developments of Sinhala include: According to Wilhelm Geiger , an example of a possible Western feature in Sinhala is the retention of initial /v/ which developed into /b/ in the Eastern languages (e.g. Sanskrit viṁśati "twenty", Sinhala visi- , Hindi bīs ). This is disputed by Muhammad Shahidullah who says that Sinhala Prakrit branched off from
1805-428: Is expected to rise by a CAGR of 2% between 2023 and 2027, and industry analyst Fitch Solutions forecasted in 2021 that Brazil's annual production will reach 592,000,000 t (583,000,000 long tons; 653,000,000 short tons) by 2030. In 2017, Canadian iron ore mines produced 49,000,000 t (48,000,000 long tons; 54,000,000 short tons) of iron ore in concentrate pellets and 13.6 million tons of crude steel. Of
1900-510: Is followed by Japan and Korea, which consume a significant amount of raw iron ore and metallurgical coal . In 2006, China produced 588,000,000 t (579,000,000 long tons; 648,000,000 short tons) of iron ore, with an annual growth of 38%. Over the last 40 years, iron ore prices have been decided in closed-door negotiations between the small handful of miners and steelmakers which dominate both spot and contract markets. Until 2006, prices were determined in annual benchmark negotiations between
1995-496: Is found only in streams that have a temperature of less than 15 degrees C and is now restricted to only a stretch of 10 km of one stream. Horton Plains was a part of a large system of plains and forest cover that included Agra-Bopats, Moon Plains and Elk Plains. Between 1831 and 1948, it became a Sambar deer hunting ground. Elephants and Wild boars were also hunted to a lesser extent. During this period lower slopes were cleared initially for coffee and then for tea plantations . As
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#17327797447632090-603: Is in the iron ranges around Lake Superior . These iron ranges occur in Minnesota and Michigan, which combined accounted for 93% of the usable iron ore produced in the United States in 2014. Seven of the nine operational open pit mines in the United States are located in Minnesota as well as two of the three tailings reclamation operations. The other two active open pit mines were located in Michigan . In 2016, one of
2185-399: Is increasingly severe. The forest dieback has affected 22 species of plants with Calophyllum walkeri being the most affected. A study has suggested that low calcium causes soil acidification and increased toxicity caused by metallic elements such as aluminium may be causing the dieback. Leaching of nutrients and the resulting imbalance in soil micronutrients may also be contributing to
2280-709: Is mined extensively in Brazil as of 2019, which exports significant quantities to Asia , and there is a nascent and large magnetite iron ore industry in Australia . Direct-shipping iron ore (DSO) deposits (typically composed of hematite ) are currently exploited on all continents except Antarctica , with the largest intensity in South America , Australia, and Asia. Most large hematite iron ore deposits are sourced from altered banded iron formations and (rarely) igneous accumulations. DSO deposits are typically rarer than
2375-412: Is one of the official and national languages of Sri Lanka, alongside Tamil . Along with Pali , it played a major role in the development of Theravada Buddhist literature. Early forms of the Sinhala language are attested as early as the 3rd century BCE. The language of these inscriptions, still retaining long vowels and aspirated consonants, is a Prakrit similar to Magadhi , a regional associate of
2470-463: 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 ". Metallic iron is virtually unknown on
2565-481: Is the Brazilian mining corporation Vale , followed by Australian companies Rio Tinto Group and BHP . A further Australian supplier, Fortescue Metals Group Ltd, has helped bring Australia's production to first in the world. The seaborne trade in iron ore—that is, iron ore to be shipped to other countries—was 849,000,000 t (836,000,000 long tons; 936,000,000 short tons) in 2004. Australia and Brazil dominate
2660-425: Is used to produce sponge iron (Fe) to be used for steel-making. Direct reduction requires more energy, as the temperatures are higher and the time is longer and it requires more reducing agent than magnetizing roasting. Lower-grade sources of iron ore generally require beneficiation , using techniques like crushing, milling , gravity or heavy media separation , screening, and silica froth flotation to improve
2755-467: Is usually found in the form of magnetite ( Fe 3 O 4 , 72.4% Fe), hematite ( Fe 2 O 3 , 69.9% Fe), goethite ( FeO(OH) , 62.9% Fe), limonite ( FeO(OH)·n(H 2 O) , 55% Fe), or siderite ( FeCO 3 , 48.2% Fe). Ores containing very high quantities of hematite or magnetite, typically greater than about 60% iron, are known as natural ore or direct shipping ore , and can be fed directly into iron-making blast furnaces . Iron ore
2850-484: Is very significant in their History and Culture. Sir Joseph Dalton Hooker had advised the British Government "to leave all Montane Forests above 5000 ft. undisturbed" and an administrative order to this effect had been issued in 1873 that prevented clearing and felling of forests in the region. Horton Plains was designated as a wildlife sanctuary on 5 December 1969, and because of its biodiversity value,
2945-905: The Chichester Range , the Hamersley Range and Koolyanobbing , Western Australia . Other types of ore are coming to the fore recently, such as oxidised ferruginous hardcaps, for instance laterite iron ore deposits near Lake Argyle in Western Australia. The total recoverable reserves of iron ore in India are about 9,602,000,000 t (9.450 × 10 long tons; 1.0584 × 10 short tons) of hematite and 3,408,000,000 t (3.354 × 10 long tons; 3.757 × 10 short tons) of magnetite . Chhattisgarh , Madhya Pradesh , Karnataka , Jharkhand , Odisha , Goa , Maharashtra , Andhra Pradesh , Kerala , Rajasthan , and Tamil Nadu are
Horton Plains National Park - Misplaced Pages Continue
3040-602: The Earth 's surface except as iron-nickel alloys from meteorites and very rare forms of deep mantle xenoliths . Although iron is the fourth-most abundant element in the Earth's crust , composing about 5%, the vast majority is bound in silicate or, more rarely, carbonate minerals, and smelting pure iron from these minerals would require a prohibitive amount of energy. Therefore, all sources of iron used by human industry exploit comparatively rarer iron oxide minerals, primarily hematite . Prehistoric societies used laterite as
3135-729: The Middle Indian Prakrits that had been used during the time of the Buddha . The most closely related languages are the Vedda language (an endangered, indigenous creole still spoken by a minority of Sri Lankans, mixing Sinhala with an isolate of unknown origin and from which Old Sinhala borrowed various aspects into its main Indo-Aryan substrate), and the Maldivian language . It has two main varieties, written and spoken, and
3230-564: The Pilbara region of Western Australia is approximately 844,000,000 t (831,000,000 long tons; 930,000,000 short tons) per year and rising. Gavin Mudd ( RMIT University ) and Jonathon Law ( CSIRO ) expect it to be gone within 30–50 years and 56 years, respectively. These 2010 estimates require ongoing review to take into account shifting demand for lower-grade iron ore and improving mining and recovery techniques (allowing deeper mining below
3325-478: The Precambrian era and are made up of Khondalites , Charnockites and granitic gneisses. The soil type is of the red-yellow podsolic group and the surface layer is covered with decayed organic matter. The mean annual rainfall is greater than 2,000 mm (79 in). Frequent cloud cover limits the amount of sunlight that is available to plants. The mean annual temperature is 13 °C (55 °F) but
3420-587: The UNESCO National Commission of Ceylon According to Wilhelm Geiger , Sinhala has features that set it apart from other Indo-Aryan languages. Some of the differences can be explained by the substrate influence of the parent stock of the Vedda language . Sinhala has many words that are only found in Sinhala, or shared between Sinhala and Vedda and not etymologically derivable from Middle or Old Indo-Aryan. Possible examples include kola for leaf in Sinhala and Vedda (although others suggest
3515-475: The birds of prey found in Horton Plains. Harriers are among the migratory raptors. This is a key wildlife area. All six highland endemic birds are found here, including dull-blue flycatcher, Sri Lanka white-eye, Sri Lanka wood pigeon, and Sri Lanka bush warbler. Yellow-eared bulbul and black-throated munia are widespread throughout the highlands. Sri Lanka is considered a herpetological paradise in
3610-407: The silicate mineral fragments will float and can be removed. Iron is the world's most commonly used metal—steel, of which iron ore is the key ingredient, represents almost 95% of all metal used per year. It is used primarily in structures, ships, automobiles, and machinery. Iron-rich rocks are common worldwide, but ore-grade commercial mining operations are dominated by the countries listed in
3705-420: The 13,600,000 t (13,400,000 long tons; 15,000,000 short tons) of steel 7,000,000 t (6,900,000 long tons; 7,700,000 short tons) was exported, and 43,100,000 t (42,400,000 long tons; 47,500,000 short tons) of iron ore was exported at a value of $ 4.6 billion. Of the iron ore exported, 38.5% of the volume was iron ore pellets with a value of $ 2.3 billion, and 61.5% was iron ore concentrates with
3800-464: The 13th century CE, recognised a category of words that exclusively belonged to early Sinhala. The grammar lists naram̆ba (to see) and koḷom̆ba (fort or harbour) as belonging to an indigenous source. Koḷom̆ba is the source of the name of the commercial capital Colombo . The consistent left branching syntax and the loss of aspirated stops in Sinhala is attributed to a probable South Dravidian substratum effect. This has been explained by
3895-691: The 62–64% Fe range. Granite and ultrapotassic igneous rocks were sometimes used to segregate magnetite crystals and form masses of magnetite suitable for economic concentration. A few iron ore deposits, notably in Chile , are formed from volcanic flows containing significant accumulations of magnetite phenocrysts . Chilean magnetite iron ore deposits within the Atacama Desert have also formed alluvial accumulations of magnetite in streams leading from these volcanic formations. Some magnetite skarn and hydrothermal deposits have been worked in
Horton Plains National Park - Misplaced Pages Continue
3990-612: The British period the plains were renamed after Sir Robert Wilmot-Horton , the British governor of Ceylon from 1831 to 1837, who travelled to the area to meet the Ratemahatmaya of Sabaragamuwa in 1836, in 1834 by Lt William Fisher of the 78th Regiment and Lt. Albert Watson of the 58th Regiment , who 'discovered' the plateau. Stone tools dating back to Balangoda culture have been found here. The local population who resided in
4085-716: The Eastern Prakrits prior to this change. He cites the edicts of Ashoka , no copy of which shows this sound change. An example of an Eastern feature is the ending -e for masculine nominative singular (instead of Western -o ) in Sinhalese Prakrit. There are several cases of vocabulary doublets , one example being the words mæssā ("fly") and mækkā ("flea"), which both correspond to Sanskrit makṣikā but stem from two regionally different Prakrit words macchiā (Western Prakrits) and makkhikā (as in Eastern Prakrits like Pali ). In 1815,
4180-628: The Horton Plains slender loris ( Loris tardigradus nycticeboides formerly sometimes considered as Loris lydekkerianus nycticeboides ) is found only in highlands of Sri Lanka and is considered one of the world's most endangered primates. In July 2010 a group of researchers from the Zoological Society of London was able to photograph the mammal for the first time. In 2016, rusty-spotted cats ( Prionailurus rubiginosus ) were recorded in Horton Plains National Park for
4275-429: The United States is estimated to have accounted for 2% of the world's iron ore output. In the United States there are twelve iron ore mines, with nine being open pit mines and three being reclamation operations. There were also ten pelletizing plants, nine concentration plants, two direct-reduced iron (DRI) plants, and one iron nugget plant that were operating in 2014. In the United States the majority of iron ore mining
4370-453: The central highlands of Sri Lanka. The peaks of Kirigalpoththa (2,389 m (7,838 ft)) and Thotupola Kanda (2,357 m (7,733 ft)), the second and the third highest of Sri Lanka, are situated to the west and north respectively. The park's elevation ranges from 1,200–2,300 m (3,900–7,500 ft). The rocks in the park belong to the Archean age and to the high series of
4465-681: The chronicle Mahāvaṃsa , written in Pali, Prince Vijaya of the Vanga Kingdom and his entourage merged in Sri Lanka with later settlers from the Pandya kingdom . In the following centuries, there was substantial immigration from Eastern India, including additional migration from the Vanga Kingdom (Bengal), as well as Kalinga and Magadha . This influx led to an admixture of features of Eastern Prakrits. The development of Sinhala
4560-411: The concentration of the ore and remove impurities. The results, high-quality fine ore powders, are known as fines. Magnetite is magnetic , and hence easily separated from the gangue minerals and capable of producing a high-grade concentrate with very low levels of impurities. The grain size of the magnetite and its degree of commingling with the silica groundmass determine the grind size to which
4655-533: The country's " economic demonstrated resources " of iron currently amount to 24 gigatonnes , or 24,000,000,000 t (2.4 × 10 long tons; 2.6 × 10 short tons). Another estimate places Australia's reserves of iron ore at 52,000,000,000 t (5.1 × 10 long tons; 5.7 × 10 short tons), or 30% of the world's estimated 170,000,000,000 t (1.7 × 10 long tons; 1.9 × 10 short tons), of which Western Australia accounts for 28,000,000,000 t (2.8 × 10 long tons; 3.1 × 10 short tons). The current production rate from
4750-515: The day during the wet season. Many pools and waterfalls can be seen in the park, and Horton Plains is considered the most important drainage basin in Sri Lanka. The Horton Plains are the headwaters of important rivers such as the Mahaweli , Kelani , and Walawe . The plains also feeds Belihul Oya, Agra Oya, Kiriketi Oya, Uma Oya, and Bogawantalawa Oya. The original name of the area was Maha Eliya Thenna (මහ එළිය තැන්න - "great open plain"). But in
4845-584: The depletion of high-grade hematite ores in the United States, led after World War II to the development of lower-grade iron ore sources, principally the use of magnetite and taconite . Iron ore mining methods vary by the type of ore being mined. There are four main types of iron ore deposits worked currently, depending on the mineralogy and geology of the ore deposits. These are magnetite, titanomagnetite , massive hematite, and pisolitic ironstone deposits. The origin of iron can be ultimately traced to its formation through nuclear fusion in stars, and most of
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#17327797447634940-573: The development of a herb layer. Dwarf bamboo species such Indocalamus and Ochlandra are also found in the undergrowth layer. Rhodomyrtus tomentosa bushes especially grow in forest margin and near the mountain peaks. Species such as Gordonia and Rhododendron arboreum have spread to Sri Lanka, along the Western Ghats of South India from the Himalayas and are now common. Nearly 54 woody plant species have been recorded from
5035-481: The dieback. Horton Plains is a popular tourist destination, with World's End being the key attraction. World's End is a sheer precipice with a 870 m (2,850 ft) drop. Baker's Falls , a waterfall formed by Belihul Oya, a tributary of the Walawe River is named after Sir Samuel Baker , a hunter and explorer The waterfall is 20 m (66 ft) high. Slab Rock Falls is another well-known waterfall in
5130-537: The epic ' Ramayana ' with some deviations. It is believed that Thotupala mountain in Horton plain to be the place where King Rawana landed his aircraft, ' Dandumonaraya '. According to the story King Rawana kidnapped Sitha , who was the wife of Rama as an act of revenge for cutting King Rawana 's sister, Suparnika 's nose. It provoked Rama in India and he led an army that consisted of monkey-like humans, whose leader
5225-677: The features that may be traced to Dravidian influence are: ඒක ēka it අලුත් aḷut new කියලා kiyalā having-said මම mama I දන්නවා dannavā know ඒක අලුත් කියලා මම දන්නවා ēka aḷut kiyalā mama dannavā it new having-said I know "I know that it is new." ඒක ēka it අලුත් aḷut new ද da Q කියලා kiyalā having-said මම mama I දන්නේ 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
5320-907: The first time, at altitudes of 2,084–2,162 m (6,837–7,093 ft). Along with Ohiya , Pattipola and Ambewela , Horton Plains forms one of the Important Bird Areas (IBAs) in Sri Lanka. Together with the adjacent Peak Wilderness Sanctuary , Horton Plains contains 21 bird species which occur only on Sri Lanka. Three, the dull-blue flycatcher , Sri Lanka white-eye , and Sri Lanka wood pigeon , occur only in Horton plains, while other endemic species include Sri Lanka blue magpie , Sri Lanka spurfowl , Sri Lanka junglefowl , yellow-fronted barbet , orange-billed babbler , Sri Lanka bush warbler , and Sri Lanka whistling-thrush . Many birds migrate here in winter including swiftlets , and alpine swift . Crested serpent eagle , mountain hawk-eagle , black-winged kite , and peregrine falcon are among
5415-442: The gangue is separated during the beneficiation process and is removed as tailings . Taconite tailings are mostly the mineral quartz , which is chemically inert. This material is stored in large, regulated water settling ponds. The key parameters for magnetite ore being economic are the crystallinity of the magnetite, the grade of the iron within the banded iron formation host rock, and the contaminant elements which exist within
5510-800: The groundwater table). Brazil is the second-largest producer of iron ore after Australia, accounting for 16% of the world's iron ore production. After a somewhat sluggish production volume 2010-2020, partly due to the Mariana dam disaster in 2015 and the Brumadinho dam disaster in 2019, which halted the production at the two involved mines, production has increased steadily since 2021, when Brazil produced 431,000,000 t (424,000,000 long tons; 475,000,000 short tons). In 2022 it increased to 435,000,000 t (428,000,000 long tons; 480,000,000 short tons) and in 2023 to 440,000,000 t (430,000,000 long tons; 490,000,000 short tons). The Brazilian production
5605-470: The height of 20 m (66 ft) and features Calophyllum walkeri , forming communities with varieties of Myrtaceae species such as Syzygium rotundifolium , and S. sclerophyllum , and Lauraceae members including Litsea , Cinnamomum , and Actinodaphne speciosa . The undergrowth layer is characterised by Strobilanthes spp. The thickness of the Strobilanthes vegetation hinders
5700-450: The iron and carbon smelting must be kept in an oxygen-deficient (reducing) state to promote the burning of carbon to produce CO and not CO 2 . The inclusion of even small amounts of some elements can have profound effects on the behavioral characteristics of a batch of iron or the operation of a smelter. These effects can be both good and bad, some catastrophically bad. Some chemicals are deliberately added, such as flux, which makes
5795-413: The iron from the oxygen, a stronger elemental bond must be presented to attach to the oxygen. Carbon is used because the strength of a carbon-oxygen bond is greater than that of the iron-oxygen bond at high temperatures. Thus, the iron ore must be powdered and mixed with coke , to be burnt in the smelting process. Carbon monoxide is the primary ingredient of chemically stripping oxygen from iron. Thus,
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#17327797447635890-836: The iron is thought to have originated in dying stars that are large enough to explode as supernovae . The Earth's core is thought to consist mainly of iron, but this is inaccessible from the surface. Some iron meteorites are thought to have originated from asteroids 1,000 km (620 mi) in diameter or larger. Banded iron formations (BIFs) are sedimentary rocks containing more than 15% iron composed predominantly of thinly-bedded iron minerals and silica (as quartz ). Banded iron formations occur exclusively in Precambrian rocks, and are commonly weakly-to-intensely metamorphosed . Banded iron formations may contain iron in carbonates ( siderite or ankerite ) or silicates ( minnesotaite , greenalite , or grunerite ), but in those mined as iron ores, oxides ( magnetite or hematite ) are
5985-607: The island of Ceylon came under British rule . During the career of Christopher Reynolds as a Sinhalese lecturer at the School of African and Oriental Studies, University of London , he extensively researched the Sinhalese language and its pre-1815 literature. The Sri Lankan government awarded him the Sri Lanka Ranjana medal for his work. He wrote the 377-page An anthology of Sinhalese literature up to 1815 , selected by
6080-428: The lowlands ascended the mountains to mine gems, extract iron ore , construct an irrigational canal and fell trees for timber. A 6-metre (20 ft) pollen core extracted from a mire revealed that in the late quaternary period the area had a semi-arid climate and a species-restricted plant community. Since Sri Lanka has a long non-written history, there is a significant and logical folk story, which also goes with
6175-423: The magnetite concentrate. The size and strip ratio of most magnetite resources is irrelevant, as a banded iron formation can be hundreds of meters thick, extend hundreds of kilometers along strike , and can easily come to more than three billion or more tonnes of contained ore. The typical grade of iron at which a magnetite-bearing banded iron formation becomes economic is roughly 25% iron, which can generally yield
6270-476: The magnetite-bearing BIF or other rocks which form its main source, or protolith rock, but are considerably cheaper to mine and process as they require less beneficiation due to the higher iron content. However, DSO ores can contain significantly higher concentrations of penalty elements, typically being higher in phosphorus, water content (especially pisolite sedimentary accumulations), and aluminium ( clays within pisolites). Export-grade DSO ores are generally in
6365-399: The main iron ore producers ( BHP Billiton , Rio Tinto , and Vale S.A. ) and Japanese importers. In 2006, Chinese company Baosteel began handling negotiations for the importer side. The Chinese government replaced Baosteel with China Iron and Steel Association as lead negotiator in 2009. Traditionally, the first deal reached between these the major producers and the major importers sets
6460-410: The mine tailings contain an average of approximately 11% iron, there would be approximately 1.41 million tons of iron wasted annually. These tailings are also high in other useful metals such as copper , nickel , and cobalt , and they can be used for road-building materials like pavement and filler and building materials such as cement, low-grade glass, and wall materials. While tailings are
6555-404: The other threats. The spread of invasive alien species such as gorse ( Ulex europaeus ), Mist Flower ( Ageratina riparia ), Crofton Weed ( Ageratina adenophora ), ( Austroeupatorium ), Blue Stars ( Aristea ecklonii ), brackens , and Pennisetum spp. threaten the native flora. The introduced rainbow trout may have affected endemic species of fish, amphibia and crustaceans. Owing to
6650-544: The park are Viola , Lobelia , Gaultheria , Fragaria , and Plantago . Tree trunks and branches are ornamented with many species of ferns , Lycopodium , lichens , and orchids . Old man's beard ( Usnea barbata ) hanging from branches adds to the beauty of the forests. About 16 of the orchid species are endemic. Other notable plants include shrubs such as Rhodomyrtus tomentosa , Gaultheria fragrantissima , herbs, Exacum trinervium , E. walkeri , Drosera indica , and tree ferns Cyathea spp. Anzia ,
6745-411: The park is also an Important Bird Area with many species not only endemic to Sri Lanka but restricted to the Horton Plains. Forest dieback is one of the major threats to the park and some studies suggest that it is caused by a natural phenomenon. The sheer precipice of World's End and Baker's Falls are among the tourist attractions of the park. Horton Plains is located on the southern plateau of
6840-429: The park, of which 27 (50%) are endemic to Sri Lanka. Frequent fire and grazing characterises Plagioclimax communities of the grassland flora. Grasslands are dominated by Arundinella villosa and Chrysopogon zeylanicus . Waterlogged swamps or slow-moving streams are found in low-lying areas, and macrophytes such as Aponogeton jacobsenii , sedge species Isolopis fluitans and Utricularia spp. are found near
6935-407: The park. Sambar have benefited from the introduced Pennisetum grass species. A recent threat, first reported in 1978, is forest dieback . In some areas, especially in the peripheral region, this has been severe with nearly a 50% in vegetation. Water deficiency has been attributed as the main cause of dieback as droughts are becoming more frequent. The regrowth of forest is hindered by frost which
7030-509: The past as high-grade iron ore deposits requiring little beneficiation . There are several granite-associated deposits of this nature in Malaysia and Indonesia . Other sources of magnetite iron ore include metamorphic accumulations of massive magnetite ore such as at Savage River , Tasmania , formed by shearing of ophiolite ultramafics . Another, minor, source of iron ores are magmatic accumulations in layered intrusions which contain
7125-441: The plains. [REDACTED] Media related to Horton Plains National Park at Wikimedia Commons Sinhala language Sinhala ( / ˈ s ɪ n h ə l ə , ˈ s ɪ ŋ ə l ə / SIN -hə-lə, SING -ə-lə ; Sinhala: සිංහල , siṁhala , [ˈsiŋɦələ] ), sometimes called Sinhalese ( / ˌ s ɪ n ( h ) ə ˈ l iː z , ˌ s ɪ ŋ ( ɡ ) ə ˈ l iː z / SIN -(h)ə- LEEZ , SING -(g)ə- LEEZ ),
7220-435: The plains. Other mammal species found in the park include Kelaart's long-clawed shrews , toque macaques , purple-faced langurs , rusty-spotted cat , Sri Lankan leopards , wild boars , stripe-necked mongooses , Sri Lankan spotted chevrotains , Indian muntjacs , and grizzled giant squirrels . Fishing cats and European otters visit the wetlands of the park to prey on aquatic animals. A subspecies of red slender loris ,
7315-432: The plains. They are Calotes nigrilabris , Rhino-horned lizard , Cophotis ceylanica , Lankascincus taprobanensis and common rough-sided snake . Two fish species found in the park, common carp and rainbow trout ; both are introduced species . Horton Plains is also home to many endemic crustaceans including Caridina singhalensis and Perbrinckia species. The endemic freshwater shrimp Caridina singhalensis
7410-480: The principal Indian producers of iron ore. World consumption of iron ore grows 10% per year on average with the main consumers being China, Japan, Korea, the United States, and the European Union. China is currently the largest consumer of iron ore, which translates to be the world's largest steel producing country. It is also the largest importer, buying 52% of the seaborne trade in iron ore in 2004. China
7505-481: The principal iron mineral. Banded iron formations are known as taconite within North America. The mining involves moving tremendous amounts of ore and waste. The waste comes in two forms: non-ore bedrock in the mine ( overburden or interburden locally known as mullock), and unwanted minerals, which are an intrinsic part of the ore rock itself ( gangue ). The mullock is mined and piled in waste dumps , and
7600-429: The quartz is left behind when the resultant powder is passed under a magnetic separator. Generally, most magnetite banded iron formation deposits must be ground to between 32 and 45 μm (0.0013 and 0.0018 in) in order to produce a low-silica magnetite concentrate. Magnetite concentrate grades are generally in excess of 70% iron by weight and usually are low in phosphorus, aluminium, titanium, and silica and demand
7695-416: The region includes 24 species of mammals, 87 species of birds, nine species of reptiles and eight species of amphibians. The Sri Lankan elephant disappeared from the region in the 1940s at the latest. At present, the largest and the most commonly seen mammal is the sambar deer . Some research findings estimate the population of sambar deer to be around 1500 to 2000, possibly more than the carrying capacity of
7790-452: The region. The Horton Plains are the headwaters of three major Sri Lankan rivers, the Mahaweli , Kelani , and Walawe . In Sinhala the plains are known as Maha Eliya Plains (මහ එළිය තැන්න). Stone tools dating back to Balangoda culture have been found here. The plains' vegetation is grasslands interspersed with montane forest and includes many endemic woody plants . Large herds of Sri Lankan sambar deer feature as typical mammals and
7885-469: The relatively small size of Horton Plains National Park, it was predicted that most male leopards have activity centres that were outside the park. Hence, continued protection of the national park and integrated management of landscapes outside of the national park is essential for the conservation of the species there. Some sambar deer have died due to eating polythene litter that blocked their food passages, and visitors are banned from bringing polythene into
7980-407: The rock must be comminuted to enable efficient magnetic separation to provide a high-purity magnetite concentrate. This determines the energy inputs required to run a milling operation. Mining of banded iron formations involves coarse crushing and screening, followed by rough crushing and fine grinding to comminute the ore to the point where the crystallized magnetite and quartz are fine enough that
8075-446: The seaborne trade, with 72% of the market. BHP, Rio and Vale control 66% of this market between them. In Australia , iron ore is won from three main sources: pisolite " channel iron deposit " ore derived by mechanical erosion of primary banded-iron formations and accumulated in alluvial channels such as at Pannawonica, Western Australia ; and the dominant metasomatically altered banded iron formation -related ores such as at Newman ,
8170-464: The seventh largest global center of iron ore production, behind Australia, Brazil, China, India, Russia, and South Africa. Producers of iron ore in Ukraine include Ferrexpo , Metinvest , and ArcelorMittal Kryvyi Rih . In 2014, mines in the United States produced 57,500,000 t (56,600,000 long tons; 63,400,000 short tons) of iron ore with an estimated value of $ 5.1 billion. Iron mining in
8265-451: The seventh-largest global center of iron ore production, behind Australia, Brazil, China, Russia, South Africa, and Ukraine. India's iron ore production in 2023 was 285,000,000 metric tonnes and was the fourth largest producer in the world. According to the U.S. Geological Survey's 2021 Report on iron ore, Ukraine is estimated to have produced 62,000,000 t (61,000,000 long tons; 68,000,000 short tons) of iron ore in 2020, placing it as
8360-677: The slow-moving streams. The bamboo Chimonobambusa densifolia thrive along the banks of the streams, and near the swampy areas grass species such as Juncus prismatocarpus , Garnotia mutica , Eriocaulon spp. and Exacum trinervium are common. Tussock grasses such as Chrysopogon zeylanicus and Cymbopogon confertiflorus are found in the wet hollows. Herbaceous flora of the grasslands include temperate species including Ranunculus , Pedicularis , Senecio , Gentiana and Alchemilla and also tropical species such as Eriocaulon and Ipsea speciosa (a rare endemic daffodil orchid). The most widespread boreal herbaceous plants of
8455-401: The table aside. The major constraint to economics for iron ore deposits is not necessarily the grade or size of the deposits, because it is not particularly hard to geologically prove enough tonnage of the rocks exist. The main constraint is the position of the iron ore relative to market, the cost of rail infrastructure to get it to market, and the energy cost required to do so. Mining iron ore
8550-483: The temperature varies considerably during the course of a day, reaching as high as 27 °C (81 °F) during the daytime, and dipping as low as 5 °C (41 °F) at night. During the southwest monsoon season, the wind speed sometimes reaches gale force . Although some rain falls throughout the year, a dry season occurs from January–March. The ground frost is common in February. Mist can persist for most of
8645-602: The two mines shut down. There have also been iron ore mines in Utah and Alabama ; however, the last iron ore mine in Utah shut down in 2014 and the last iron ore mine in Alabama shut down in 1975. Iron ores consist of oxygen and iron atoms bonded together into molecules. To convert it to metallic iron, it must be smelted or sent through a direct reduction process to remove the oxygen. Oxygen-iron bonds are strong, and to remove
8740-402: The world. Possibly about 15 amphibian species inhabit the park. Among them are Microhyla zeylanica , Uperodon palmatus , Zakerana greenii , Hydrophylax gracilis , Pseudophilautus alto , Pseudophilautus femoralis , Pseudophilautus frankenbergi , Pseudophilautus microtympanum , Pseudophilautus schmarda , and Taruga eques . De Silva has observed five endemic reptiles from
8835-450: Was Hanuman . In the story, Hanuman set fire to Horton plains and that fire lasted for a long time. The original name, Maha Eliya Thenna carries the meaning, 'The hugely lighten ground'. Even now the upper layer of soil can be seen in a blackish grey colour. There had been some soil tests done by local universities, and it revealed that the upper layer contains a high amount of Calcium Carbonate and Potash . For Sri Lankans , Horton Plains
8930-583: Was elevated to a national park on 18 March 1988. The Peak Wilderness Sanctuary which lies in the west is contiguous with the park. The land area covered by Horton Plains is 3,160 hectares (12.2 sq mi). Horton Plains contains the most extensive area of cloud forest still existing in Sri Lanka. In July 2010, the Central Highlands of Sri Lanka which incorporates Horton Plains National Park, Peak Wilderness Sanctuary and Knuckles Mountain Range
9025-500: Was inscribed on the World Heritage List . The vegetation of the park is classified into two distinctive groups, 2,000 ha (7.7 sq mi) of wet patna ( Sinhalese : patana , montane grasslands and shrublands ) and 1,160 ha (4.5 sq mi) of subtropical montane evergreen forests . Nearly 750 species of plants belonging to 20 families have been recorded in the park. The forest canopy reaches
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