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36-651: Marmora may refer to: Places [ edit ] Canada Marmora, Ontario , a community in Hastings County Marmora and Lake, Ontario , a township in Hastings County Greece Marmora, Greece , a village on the island of Paros, South Aegean Italy Marmora, Piedmont , a comune in the Province of Cuneo United States Marmora, New Jersey ,

72-476: A recommended exposure limit (REL) of 10 mg/m total exposure and 5 mg/m respiratory exposure over an 8-hour workday. Dust, debris and temperature fluctuations from working marble can endanger the eye health of employees. For the staff involved in marble processing, it is necessary to provide eye protection equipment, and it is recommended to improve the education of all workers on occupational health risks and strengthen preventive measures. As

108-538: A community in Cape May County People [ edit ] Alberto Ferrero La Marmora , an Italian naturalist Alfonso Ferrero La Marmora , an Italian politician Alessandro Ferrero La Marmora , an Italian general Other uses [ edit ] Marmora , a Latin word for marble USS  Marmora , the name of more than one United States Navy ship See also [ edit ] Marmara (disambiguation) Topics referred to by

144-709: A cottage and trailer resort since the early 1900s on the north shore of Crowe Lake. Home to the scenic Crowe Valley Campground, located in town alongside the Crowe River. A country Jamboree is held in Marmora each year: the "Crowe Valley Jamboree" at the Marmora Fair Grounds in June. (In past years there was another Jamboree in September.) Annual Marmora Area Canoe and Kayak Festival - Marmora and Lake

180-570: A growth of 12% annually for the 2000–2006 period, compared to 10.5% annually for the 2000–2005 period. The largest dimension marble application is tile. The stone and marble industry is one of the largest industries in Palestine, contributing 20-25% of its total industrial revenues, generating USD $ 400–$ 450 million in revenue annually. The industry employs 15,000–20,000 workers across the West Bank across 1200–1700 facilities, and amounts to 4.5% of

216-579: A more defined structure for the running and organizing of the historical event. A board of directors was then formed in 2007. With its hosting and running of sled dog races it makes the Marmora SnoFest, host of the Marmora Cup, the longest running event of its type in Canada. Formerly annual festivities of Punk Fest led by Warren Hastings, a.k.a. Spider, were held here for several years before

252-646: A potential hazard. Mitigations such as dust filters, or dust suppression are suggested, but more research needs to be carried out on the efficacy of safety measures. In the United States, the Occupational Safety and Health Administration (OSHA) has set the legal limit ( permissible exposure limit ) for marble exposure in the workplace as 15 mg/m total exposure and 5 mg/m respiratory exposure over an 8-hour workday. The National Institute for Occupational Safety and Health (NIOSH) has set

288-425: A typical process using magnesium fluorosilicate (MgSiF 6 ) and hydrochloric acid (HCl) taking place. The resulting calcium hexafluorosilicate (CaSiF 6 ) is bonded to the surface of the marble. This is harder, more glossy and stain resistant compared to the original surface. The other often used method of finishing marble is to polish with oxalic acid (H 2 C 2 O 4 ), an organic acid. The resulting reaction

324-399: Is a rock composed of calcium and magnesium carbonate , mostly white and pink. Common marble varieties are granular limestone or dolomite . The hardness of marble is very high, because the internal structure of the rock is very uniform after long-term natural aging, and the internal stress disappears, so the marble will not be deformed due to temperature, and has strong wear resistance. It

360-439: Is a very popular building material. The following table is a summary of the features of Marble. White marble has been prized for its use in sculptures since classical times . This preference has to do with its softness, which made it easier to carve, relative isotropy and homogeneity, and a relative resistance to shattering. Also, the low index of refraction of calcite allows light to penetrate 12.7 to 38 millimeters into

396-538: Is as follows: In this case the calcium oxalate (CaC 2 O 4 ) formed in the reaction is washed away with the slurry, leaving a surface that has not been chemically changed. The haloalkaliphilic methylotrophic bacterium Methylophaga murata was isolated from deteriorating marble in the Kremlin . Bacterial and fungal degradation was detected in four samples of marble from Milan Cathedral ; black Cladosporium attacked dried acrylic resin using melanin. Marble

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432-470: Is commonly used for sculpture and as a building material . The word "marble" derives from the Ancient Greek μάρμαρον ( mármaron ), from μάρμαρος ( mármaros ), "crystalline rock, shining stone", perhaps from the verb μαρμαίρω ( marmaírō ), "to flash, sparkle, gleam"; R. S. P. Beekes has suggested that a " Pre-Greek origin is probable". This stem is also the ancestor of

468-635: Is different from Wikidata All article disambiguation pages All disambiguation pages Marmora, Ontario Marmora is the largest community in the Municipality of Marmora and Lake in Hastings County , Ontario , Canada . It is located on the Crowe River and along Highway 7 between Havelock to the west and Madoc to the east, about the halfway point between Ottawa and Toronto. The rich history of Marmora Township

504-460: Is filled with several hundred feet of water. The water originates from an underground spring which was exposed during mining operations. Camping and other outdoor recreational activities such as ATV trail riding, fishing, and hunting are very popular for locals and those on vacation. The Crowe River flows from Crowe Lake, which boasts excellent fishing for bass, muskie, pike, walleye, and a few other types of fish. Home of Beautiful Glen Allan Park,

540-499: Is the host location as chosen by the Kawartha WhiteWater Paddlers. After a thorough river review throughout the province Marmora and Lake was chosen for its many rivers. Home of The Classic Cruisers ( car show ), running every Thursday at 6 pm throughout the summer. From 1979 to 2017, Marmora SnoFest held the annual Marmora Cup dog-sled races . A Committee of Council was established in 2005 to provide

576-540: Is the story of mining in Eastern Ontario . Since 1820 this Township has played a leading role in the development of iron mining. In addition, copper, lead, silver, gold and lithographic limestone have been extracted. Iron mining was an important industry in the area during the 19th century. The village was originally named Marmora Iron Works . Gold and silver were also mined at nearby Cordova Mines . A nearby plant processes talc and dolomite . In 1821,

612-574: The English word "marmoreal", meaning "marble-like." While the English term "marble" resembles the French marbre , most other European languages (with words like "marmoreal") more closely resemble the original Ancient Greek. Marble is a rock resulting from metamorphism of sedimentary carbonate rocks , most commonly limestone or dolomite . Metamorphism causes variable re-crystallization of

648-493: The dimension stone trade, the term marble is used for any crystalline calcitic rock (and some non-calcitic rocks) useful as building stone. For example, Tennessee marble is really a dense granular fossiliferous gray to pink to maroon Ordovician limestone, that geologists call the Holston Formation . Ashgabat , the capital city of Turkmenistan , was recorded in the 2013 Guinness Book of Records as having

684-589: The Crowe First Nations that lived along the shore. Marmora Township was opened for sale in 1821, but there was little settlement outside of the newly created mining village. The hamlet of Marmora was separated from the Township and incorporated as a village in 1901. It was re-amalgamated with the surrounding townships of Marmora and Lake in 2001 to form a newly expanded Municipality of Marmora and Lake. Although mining and lumbering have been vital to

720-510: The Township, agriculture has probably supported more people in the area since 1850. A remaining legacy of iron mining is the Marmora Open Pit Mine, a man-made wonder-lake surrounded by a barbed wire fence, seventy five acres in area, five hundred and fifty feet deep, filled with four hundred feet deep of clear blue spring water that is steadily rising to the top. This location is also a host to a variety of wildlife. The mine itself

756-487: The excavated material will be waste, this is often then used as chips for flooring or wall finish, and uses for which high-calcium limestone is suitable. Marble sludge waste can be used as a mineral filler in water-based paints. Using ground calcium carbonate as a filler in paint production can improve the brightness, hiding power and application performance of paint, and can also replace expensive pigments such as titanium dioxide . Recycling of marble waste leads to

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792-454: The favorite medium for Greek and Roman sculptors and architects (see classical sculpture ), marble has become a cultural symbol of tradition and refined taste. Its extremely varied and colorful patterns make it a favorite decorative material. Places named after the stone include Marblehead, Massachusetts ; Marblehead, Ohio ; Marble Arch , London; the Sea of Marmara ; India's Marble Rocks ; and

828-437: The formation of "black-crust" (accumulation of calcium sulphate, nitrates and carbon particles). Vinegar and other acidic solutions should be avoided in the cleaning of marble products. Crystallization refers to a method of imparting a glossy, more durable finish on to a marble floor (CaCO 3 ). It involves polishing the surface with an acidic solution and a steel wool pad on a flooring machine. The chemical reaction below shows

864-566: The limestone. Green coloration is often due to serpentine resulting from originally magnesium-rich limestone or dolomite with silica impurities. These various impurities have been mobilized and recrystallized by the intense pressure and heat of the metamorphism. Acids react with the calcium carbonate in marble, producing carbonic acid (which decomposes quickly to CO 2 and H 2 O) and other soluble salts : Outdoor marble statues, gravestones , or other marble structures are damaged by acid rain whether by carbonation , sulfation or

900-546: The nation's GDP. The vast majority of the industry's exports are to Israel. Marble in the geologic sense does not naturally outcrop in Palestine, and that the vast majority of commercially labeled marble produced in Palestine produced would be geologically considered limestone. Particulate air pollution exposure has been found to be elevated in the marble production industry. Exposure to the dust produced by cutting marble could impair lung function or cause lung disease in workers, such as silicosis . Skin and eye problems are also

936-549: The newly surveyed townships of Elzevir, Madoc and Marmora were added to Hastings County, on the initiative of Charles Hayes, an Irish entrepreneur, in return for his setting up the Marmora Iron Works. The new Township of Marmora took its name from the Latin word for marble because of an "immense rock of most delicate white marble". This giant rock stood on the southeast corner of Crowe Lake, which took its name from

972-645: The original carbonate mineral grains. The resulting marble rock is typically composed of an interlocking mosaic of carbonate crystals . Primary sedimentary textures and structures of the original carbonate rock ( protolith ) have typically been modified or destroyed. Pure white marble is the result of metamorphism of a very pure ( silicate -poor) limestone or dolomite protolith. The characteristic swirls and veins of many colored marble varieties, sometimes called striations , are usually due to various mineral impurities such as clay , silt , sand , iron oxides , or chert which were originally present as grains or layers in

1008-410: The same term [REDACTED] This disambiguation page lists articles associated with the title Marmora . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Marmora&oldid=705095441 " Category : Disambiguation pages Hidden categories: Short description

1044-409: The stone before being scattered out, resulting in the characteristic waxy look which brings a lifelike luster to marble sculptures of any kind, which is why many sculptors preferred and still prefer marble for sculpting the human form. Construction marble is a stone which is composed of calcite, dolomite or serpentine that is capable of taking a polish. More generally in construction , specifically

1080-679: The towns of Marble, Minnesota ; Marble, Colorado ; Marble Falls, Texas , and Marble Hill, Manhattan, New York . The Elgin Marbles are marble sculptures from the Parthenon in Athens that are on display in the British Museum . Total world quarrying production in 2019 was approximately 316 million tonnes; however, quarrying waste accounted for 53% of this total production. In the process of marble mining and processing, around half or

1116-489: The township put them to an end, because they would not allow medics on site or supply washrooms/fresh water to the party-goers. " Punks " and bands from all over the world traveled to Marmora for the weekend's events. Former home of The Marmora Lakers Men's Senior AAA Hockey Team. It was sold in early 2008. Marble In geology , the term marble refers to metamorphosed limestone , but its use in stonemasonry more broadly encompasses unmetamorphosed limestone. Marble

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1152-655: The widespread exchange of marble objects, including building elements, sculptures, and sarcophagi . There was a significant increase in the distribution of white marble from the late 1st century BC to the end of the 2nd century AD. A gradual decline in distribution started in the third century AD. According to the United States Geological Survey , U.S. domestic marble production in 2006 was 46,400 tons valued at about $ 18.1 million, compared to 72,300 tons valued at $ 18.9 million in 2005. Crushed marble production (for aggregate and industrial uses) in 2006

1188-415: The world's highest concentration of white marble buildings. The extraction of marble is performed by quarrying . Blocks are favoured for most purposes, and can be created through various techniques, including drilling and blasting, water jet and wedge methods. Limestones are often commercially and historically referred to as marble, which differs from the geological definition. In 1998, marble production

1224-753: Was China with a 64% market share, followed by India with 11% and Italy with 5%. White marbles throughout the Mediterranean basin were widely utilized during the Roman period. Extraction centers were unevenly distributed across the Italian Peninsula , mainland Greece , the Aegean Islands , Asia Minor , and smaller hubs like those in the Iberian Peninsula . The need for extensive trade arose due to this imbalance, leading to

1260-465: Was 11.8 million tons valued at $ 116 million, of which 6.5 million tons was finely ground calcium carbonate and the rest was construction aggregate . For comparison, 2005 crushed marble production was 7.76 million tons valued at $ 58.7 million, of which 4.8 million tons was finely ground calcium carbonate and the rest was construction aggregate. U.S. dimension marble demand is about 1.3 million tons. The DSAN World Demand for (finished) Marble Index has shown

1296-447: Was dominated by 4 countries that accounted for almost half of world production of marble and decorative stone. Italy and China were the world leaders, each representing 16% of world production, while Spain and India produced 9% and 8%, respectively. In 2018 Turkey was the world leader in marble export, with 42% share in global marble trade, followed by Italy with 18% and Greece with 10%. The largest importer of marble in 2018

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