|
Cornish Stone
China stone is a medium grained, feldspar-rich partially kaolinised granite characterized by the absence of iron-bearing minerals.Cornwall County Council website, ''China clay and china stone'' undated, URL retrieved on 14 September 2007 It is mainly used for making , hence the name, and coatings for paper. Its discovery in the mid-18th century was a crucial event in the development of the English porcelain industry. The |
China Clay Sculpture Wheal Martyn Museum,St Austell - Geograph
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and borders fourteen countries by land, the most of any country in the world, tied with Russia. Covering an area of approximately , it is the world's third largest country by total land area. The country consists of 22 provinces, five autonomous regions, four municipalities, and two Special Administrative Regions (Hong Kong and Macau). The national capital is Beijing, and the most populous city and financial center is Shanghai. Modern Chinese trace their origins to a cradle of civilization in the fertile basin of the Yellow River in the North China Plain. The semi-legendary Xia dynasty in the 21st century BCE and the well-attested Shang and Zhou dynasties developed a bureaucratic political system to serve hereditary monarchies, or dynasti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bone China
Bone china is a type of ceramic that is composed of bone ash, feldspathic material, and kaolin. It has been defined as "ware with a translucent body" containing a minimum of 30% of phosphate derived from animal bone and calculated calcium phosphate. Bone china is the strongest of the porcelain or china ceramics, having very high mechanical and physical strength and chip resistance, and is known for its high levels of whiteness and translucency.Ozgundogdu, Feyza Cakir. “Bone China from Turkey” Ceramics Technical; May2005, Issue 20, p29-32. Its high strength allows it to be produced in thinner cross-sections than other types of porcelain. Like stoneware, it is vitrified, but is translucent due to differing mineral properties. In the mid-18th century, English potters had not succeeded in making hard-paste porcelain (as made in East Asia and Meissen porcelain), but found bone ash a useful addition to their soft-paste porcelain mixtures, giving strength. This became standard at th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
St Austell And Clay Country Eco-town
The St Austell and Clay Country Eco-town is a plan to build a new town on a cluster of sites owned by mining company Imerys near St Austell, in Cornwall, UK. The plan was given outline government approval in July 2009. The plan would need to gain full planning permission before construction commenced. A number of organisations are involved in the development. A joint venture company called ECO-BOS has been set up by Imerys, and Orascom, with assistance from the Eden Project. This company will prepare the planning application and build the development if granted. Cornwall Council will lead on some part of the project. Background The plan was provisionally termed Imerys China Clay Community, in 2008 it was shortlisted by the UK's Department for Communities and Local Government as one of the 10 eco-towns proposed for construction in the UK. Under the company's plans, 5,000 eco-homes would be built on former china clay quarries and other sites owned by Imerys over a 20-year period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imerys
Imerys S.A. is a French multinational company which specialises in the production and processing of industrial minerals. It is headquartered in Paris and is a constituent of the CAC Mid 60 index. Imerys has operations in over 40 countries and over 16,000 employees. It extracts and processes rocks and minerals for customers in the manufacturing and construction industries. Groupe Bruxelles Lambert is the largest shareholder of Imerys. History The company was first founded in 1880, when the Rothschild family combined some of their metals and mining interests into Spanish company Peñarroya. Over the next century it specialized in extracting and processing non-ferrous metals, becoming one of the world leaders in mining extraction. After operating as a stand-alone company, in 1970 Peñarroya branched out and merged with the Société Le Nickel (now Eramet) and Mokta (now Société Mokta El Hadid) and created a new holding company called Imétal to manage the new business. By th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FTSE 100 Index
The Financial Times Stock Exchange 100 Index, also called the FTSE 100 Index, FTSE 100, FTSE, or, informally, the "Footsie" , is a share index of the 100 companies listed on the London Stock Exchange with (in principle) the highest market capitalisation. The index is maintained by the FTSE Group, a subsidiary of the London Stock Exchange Group. Overview The index is maintained by the FTSE Group, now a wholly owned subsidiary of the London Stock Exchange, which originated as a joint venture between the ''Financial Times'' and the London Stock Exchange. It is calculated in real time and published every second when the market is open. The FTSE 100 Index was launched on 3 January 1984. The market capitalisation weighted FTSE 100 index replaced the price-weighted FT30 Index as the performance benchmark for most investors. The FTSE 100 broadly consists of the largest 100 qualifying UK companies by full market value. The total market value of a company is calculated by multiply ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
English China Clays
English China Clays PLC, or ECC, was a mining company involved in the extraction of china clay, based in St Austell, Cornwall. It was once a constituent of the FTSE 100 Index but in 1999 was acquired by Imetal. History English China Clays was incorporated in April 1919 through the amalgamation of three of the largest producers: Martin Bros.(established in 1837), West of England China Clay & Stone (1849) and the North Cornwall China Clay Company (1908).Kenneth Hudson, ''The History of English China Clays'' (c.1969) The three companies accounted for around half the industry's output at the time. Before the First World War there had been as many as seventy individual china clay producers but the industry had suffered from overcapacity and wartime dislocation. More mergers were to follow. Months after the ECC merger, H.D. Pochin acquired J.W. Higman taking it to third place in the industry after ECC and Lovering China Clays. Even then it was estimated that the demand for clay was no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petuntse
Petuntse (from 白墩子 in pinyin: ), also spelled petunse and ''bai dunzi'', ''baidunzi'', is a historic term for a wide range of micaceous or feldspathic rocks. However, all will have been subject to geological decomposition processes that result in a material which, after processing, is suitable as an ingredient in some ceramic formulations. The name means "little white bricks", referring to the form in which it was transported to the potteries (compare ball clay). It was, and to some extent continues to be, an important raw material for Chinese porcelain, although the terms "porcelain stone", or "pottery stone", are now used. The equivalent term in Chinese is ''cishi''. It is mixed with kaolin in proportions varying according to the grade of porcelain to be produced; equal quantities for the best and two thirds petuntse to one third kaolin for everyday ware. There are large deposits of high quality stone in Jiangxi province in south-eastern China, which became a centre for po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tonnes
The tonne ( or ; symbol: t) is a unit of mass equal to 1000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton to distinguish it from the non-metric units of the short ton ( United States customary units), and the long ton ( British imperial units). It is equivalent to approximately 2204.6 pounds, 1.102 short tons, and 0.984 long tons. The official SI unit is the megagram (symbol: Mg), a less common way to express the same mass. Symbol and abbreviations The BIPM symbol for the tonne is t, adopted at the same time as the unit in 1879.Table 6 . BIPM. Retrieved on 2011-07-10. Its use is also official for the metric ton in the United States, having been adopted by the United States |
St Austell
St Austell (; kw, Sans Austel) is a town in Cornwall, England, south of Bodmin and west of the border with Devon. St Austell is one of the largest towns in Cornwall; at the 2011 census it had a population of 19,958. History St Austell was a village centred around the parish church, until the arrival of significant tin mining in the 18th century turned it into a town. St Austell is named after the 6th century Cornish saint, St Austol, a disciple of St Mewan. In a Vatican manuscript there is a 10th-century list of Cornish parish saints. This includes Austoll, which means that the church and village existed at that time, shortly after 900. St Austell is not mentioned in Domesday Book (1086). However A. L. Rowse, in his book ''St. Austell: Church, Town, and Parish'', cites records which show a church was dedicated on 9 October 1262 by Bishop Bronescombe, and other records show a church there in 1169, dedicated to "Sanctus Austolus". The current church dates from the 13t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many smaller islands within the British Isles. Northern Ireland shares a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between the Kingdom of England (which included Wales, annexed in 1542) and the Kingdom of Scotland in 170 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornwall
Cornwall (; kw, Kernow ) is a historic county and ceremonial county in South West England. It is recognised as one of the Celtic nations, and is the homeland of the Cornish people. Cornwall is bordered to the north and west by the Atlantic Ocean, to the south by the English Channel, and to the east by the county of Devon, with the River Tamar forming the border between them. Cornwall forms the westernmost part of the South West Peninsula of the island of Great Britain. The southwesternmost point is Land's End and the southernmost Lizard Point. Cornwall has a population of and an area of . The county has been administered since 2009 by the unitary authority, Cornwall Council. The ceremonial county of Cornwall also includes the Isles of Scilly, which are administered separately. The administrative centre of Cornwall is Truro, its only city. Cornwall was formerly a Brythonic kingdom and subsequently a royal duchy. It is the cultural and ethnic origin of the Cornish dias ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fluorspar
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 are also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> United Kingdom")
