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Macraes Mine
Macraes Mine in East Otago is New Zealand's largest gold mine, and consists of a large scale opencast mine opened in 1990, and a newer underground mine, opened in 2008.Macraes Mine at Oceana Gold It is situated close to the settlement of and is owned by OceanaGold Corporation. Gold production averaged 193,000 Troy ounce
Troy weight is a system of units of mass that originated in 15th-century England, and is primarily used in the precious metals industry. The ...
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Gold Mine And Mill, Macraes Flat, 2007
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental (native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anion. Gol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macraes Gold Mine - Frasers Pit
Macraes, formerly known as Macraes Flat, and known in Māori as Ōtī,Place names'' on Kāti Huirapa Runaka ki Puketeraki website, viewed 2012-01-04 is a town in the Waitaki District in Otago, New Zealand. It is known as a mining town, with a long history of gold extraction. The town sits 55 km north of Dunedin in New Zealand's South Island. The Macraes Mine, New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island coun ...'s largest gold mine, is nearby. The settlement was named after John McRae, who lived in the area in the late 1850s before gold was discovered nearby. In 2015 the name of the town was officially altered from Macraes Flat to Macraes. References Waitaki District Populated places in Otago Mining communities in New Zealand {{Otago-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
East Otago
East Otago is the name given to that part of Otago, in the South Island of New Zealand that lies directly to the north of Dunedin. To the south, its limit is approximately the rough hill pass of the Kilmog, 25 kilometres north of Dunedin city centre, and in the north the limit is the Shag River. The population of East Otago is 2,500 (est 2001) Expected population in 2006 is 3,000 with 1,400 expecting to live in the Main town of Waikouaiti Census provisional count for East Otago as of 2006 was 4,991 Census provisional count for East Otago towns was: * Waikouaiti: 1,620 *Palmerston: 1,246 * Karitane: 720 *Dunback: 320 * Moeraki: 682 4,588 Live in the 5 main centers 403 Live in the rural areas Total: 4,991 The area contains two main towns, Waikouaiti and Palmerston along with the smaller settlements of Karitane and Dunback. The name East Otago has fallen somewhat out of favour since the expansion of the city limits of Dunedin to encompass much of this area in the 1990s. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macraes Flat
Macraes, formerly known as Macraes Flat, and known in Māori as Ōtī,Place names'' on Kāti Huirapa Runaka ki Puketeraki website, viewed 2012-01-04 is a town in the Waitaki District in Otago, New Zealand. It is known as a mining town, with a long history of gold extraction. The town sits 55 km north of Dunedin in New Zealand's South Island. The Macraes Mine, New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...'s largest gold mine, is nearby. The settlement was named after John McRae, who lived in the area in the late 1850s before gold was discovered nearby. In 2015 the name of the town was officially altered from Macraes Flat to Macraes. References Waitaki District Populated places in Otago Mining communities in New Zealand {{Otago-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OceanaGold
OceanaGold Corporation (OceanaGold) is a multinational, mid-tier gold mining company with significant global operating, development and exploration experience. OceanaGold’s operating assets are located in the Philippines, New Zealand and the United States and include: the Didipio Gold-Copper Mine on Luzon Island in the Philippines; the Macraes Goldfield Mine in the South Island of New Zealand; the Waihi Gold Mine in the North Island of New Zealand; and the Haile Gold Mine located in South Carolina, United States of America. OceanaGold is publicly listed on the Toronto Stock Exchange (TSX) under the ticker ‘OGC’ and was formerly listed on the Australian Securities Exchange. Production 2017 was a record year of financial and operating performance for OceanaGold. For the sixth consecutive year the company achieved its full-year production and cost guidance, producing 574,606 ounces of gold, 18,351 tonnes of copper, and delivering a record revenue of $724 million (net profit a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troy Ounce
Troy weight is a system of units of mass that originated in 15th-century England, and is primarily used in the precious metals industry. The troy weight units are the grain, the pennyweight (24 grains), the troy ounce (20 pennyweights), and the troy pound (12 troy ounces). The troy grain is equal to the grain unit of the avoirdupois system, but the troy ounce is heavier than the avoirdupois ounce, and the troy pound is lighter than the avoirdupois pound. One troy ounce (oz t) equals exactly 31.1034768 grams. Etymology Troy weight probably takes its name from the French market town of Troyes where English merchants traded at least as early as the early 9th century. The name ''troy'' is first attested in 1390, describing the weight of a platter, in an account of the travels in Europe of the Earl of Derby. Charles Moore Watson (1844–1916) proposes an alternative etymology: ''The Assize of Weights and Measures'' (also known as ), one of the statutes of uncertain date from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orogenic
Orogeny is a mountain building process. An orogeny is an event that takes place at a convergent plate margin when plate motion compresses the margin. An ''orogenic belt'' or ''orogen'' develops as the compressed plate crumples and is uplifted to form one or more mountain ranges. This involves a series of geological processes collectively called orogenesis. These include both structural deformation of existing continental crust and the creation of new continental crust through volcanism. Magma rising in the orogen carries less dense material upwards while leaving more dense material behind, resulting in compositional differentiation of Earth's lithosphere ( crust and uppermost mantle). A synorogenic process or event is one that occurs during an orogeny. The word "orogeny" () comes from Ancient Greek (, , + , , ). Although it was used before him, the term was employed by the American geologist G. K. Gilbert in 1890 to describe the process of mountain-building as distinguished ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buildings And Structures In Otago
A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, prestige, and aesthetic reasons. To better understand the term ''building'' compare the list of nonbuilding structures. Buildings serve several societal needs – primarily as shelter from weather, security, living space, privacy, to store belongings, and to comfortably live and work. A building as a shelter represents a physical division of the human habitat (a place of comfort and safety) and the ''outside'' (a place that at times may be harsh and harmful). Ever since the first cave paintings, buildings have also become objects or canvasses of much artistic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Mines In New Zealand
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile metal in a pure form. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental (native state), as nuggets or grains, in rocks, veins, and alluvial deposits. It occurs in a solid solution series with the native element silver (as electrum), naturally alloyed with other metals like copper and palladium, and mineral inclusions such as within pyrite. Less commonly, it occurs in minerals as gold compounds, often with tellurium (gold tellurides). Gold is resistant to most acids, though it does dissolve in aqua regia (a mixture of nitric acid and hydrochloric acid), forming a soluble tetrachloroaurate anion. Gol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open-pit Mines
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] |
