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Milford Pink Granite
Milford pink granite, also known as Milford granite or Milford pink is a granite deposit located in and around the town of Milford, Massachusetts. Covering an area of approximately according to the USGS, the Proterozoic igneous rock is also sometimes referred to as Braggville granite for several quarries in the neighboring village of Braggville. From 1870 to 1940, the town of Milford became famous for the "pink" variety of this stone, prized as a building material. According to local legend, the granite was "discovered" in the early 1870s by two brothers, James and William Sherman at Rocky Woods in Milford. At its peak, over 1,000 men labored in dozens of quarries in Milford and nearby Hopkinton. A sample of Milford Pink is on display at the Smithsonian Institution. Milford pink granite was quarried by the Fletcher Granite Company, at their Lumber Street quarry in Hopkinton, which also owned a granite quarry in Milford, New Hampshire, 50 miles to the north. Description The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicon Dioxide
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula , commonly found in nature as quartz. In many parts of the world, silica is the major constituent of sand. Silica is one of the most complex and abundant families of materials, existing as a compound of several minerals and as a synthetic product. Examples include fused quartz, fumed silica, opal, and aerogels. It is used in structural materials, microelectronics, and as components in the food and pharmaceutical industries. All forms are white or colorless, although impure samples can be colored. Silicon dioxide is a common fundamental constituent of glass. Structure In the majority of silicon dioxides, the silicon atom shows tetrahedral coordination, with four oxygen atoms surrounding a central Si atomsee 3-D Unit Cell. Thus, SiO2 forms 3-dimensional network solids in which each silicon atom is covalently bonded in a tetrahedral manner to 4 oxygen atoms. In contrast, CO2 is a li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fletcher Granite Company
Fletcher Granite Company was a granite quarrying company that opened in 1881 in Westford, Massachusetts, and ceased operations in 2010. The company was known for its famed Milford pink granite from Milford, Massachusetts, and also owned a granite quarry in Milford, New Hampshire, fifty miles to the north. History In 2003, the company rebuilt their rail line, which connects to Pan Am Railways Pan Am Railways, Inc. (PAR) is a subsidiary of CSX Corporation that operates Class II regional railroads covering northern New England from Mattawamkeag, Maine, to Rotterdam Junction, New York. Pan Am Railways is primarily made up of former C .... At the time, it imported rock from Georgia and transferred the stone at Iron Horse Park onto trucks, which then transported it to the quarry. Up through 2009 the company also owned a quarry in Milford, New Hampshire. In 2010, the Fletcher Granite ceased operations due to declining revenue. The company was sold in 2011. References ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Memorial Hall (Milford, Massachusetts)
Memorial Hall is an historic hall located at 30 School Street in Milford, Massachusetts. It was built as a Civil War tribute. Designed by Milford architect Frederick Swasey in the Richardsonian Romanesque style, the hall was built in 1884 from local Milford granite and Longmeadow brownstone. The building features carved brownstone figures and panels inscribed "Grant" and "Farragut". On the front of the hall, there is a bronze plaque inscribed with Lincoln's Gettysburg Address. The building was added to the National Register of Historic Places in 1985. It underwent a restoration in 2001–2002.Taken from sign on building. It is now home to the Milford Historical Commission, whose museum is open to visitors Thursdays from 1-4 pm or by appointment. See also *National Register of Historic Places listings in Worcester County, Massachusetts References External links Milford Historical Commission Museums in Worcester County, Massachusetts History museums in Massachusetts Rich ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flour And Grain Exchange Building
The Flour and Grain Exchange Building is a 19th-century office building in Boston. Located at 177 Milk Street in the Custom House District, at the edge of the Financial District near the waterfront, it is distinguished by the large black slate conical roof at its western end. It is referred to as the Grain Exchange Building and sometimes as the Boston Chamber of Commerce Building. History and architecture The Flour and Grain Exchange Building was built from 1891 to 1893 for its original occupant, the Boston Chamber of Commerce on land donated for that purpose by Henry Melville Whitney. It was designed by the firm of Shepley, Rutan and Coolidge (now Shepley Bulfinch), founded by the successors of Henry Hobson Richardson, and in the Romanesque Revival style often associated with Richardson. The building exterior is of Milford pink granite. The Flour and Grain Exchange Building is seven stories tall, with two additional stories in a cylindrical turret at the west end. The ornat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boston Public Library, McKim Building
The McKim Building is the main branch of the Boston Public Library at Copley Square in Boston, Massachusetts. The building, described upon its 1895 opening as a "palace for the people", contains the library's research collection, exhibition rooms, and administrative offices. The building includes lavish decorations, a children's room (the first in the nation), and a central courtyard surrounded by an arcaded gallery in the manner of a Renaissance cloister. The library regularly displays its rare works, often in exhibits that will combine works on paper, rare books, and works of art. Several galleries in the third floor of the McKim building are maintained for exhibits. History Boston Public Library was founded in 1852. The first Boston Public Library location opened in 1854 in two rooms in the Adams School on Mason Street. Because the Mason Street space was small and poorly lit, a new building opened at 55 Boylston Street in 1858. It cost $365,000 to build and held 70,000 volum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hopedale, Massachusetts
Hopedale is a town in Worcester County, Massachusetts, Worcester County, Massachusetts, United States. It is located 25 miles southwest of Boston, in eastern Massachusetts. With origins as a Christian utopian community, the town was later home to Draper Corporation, a large loom manufacturer throughout the 20th century until its closure in 1980. Today, Hopedale has become a bedroom community for professionals working in Greater Boston and is home to highly ranked public schools. The population was 6,017 as of the 2020 United States Census, 2020 census. History Hopedale was first settled by Europeans in 1660. Benjamin Albee built a mill on what is now the south end of Hopedale in 1664. A area of the Blackstone Valley was incorporated as the town of Mendon, Massachusetts, Mendon. In 1780, Milford, Massachusetts, Milford separated from Mendon. On August 26, 1841, Adin Ballou, along with the Practical Christianity, Practical Christians, gave Hopedale its name, within the town of Milf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bancroft Memorial Library
Bancroft Memorial Library is the public library serving Hopedale, Massachusetts. It is located at 50 Hopedale Street in the town center, in a fine Romanesque building built in 1898-99 and listed on the National Register of Historic Places. Architecture and history The library is located on the west side of Hopedale Street, a short way north of the town common. It is a single-story stone structure, designed by Boston architect C. Howard Walker of the firm Walker & Kimball. It is constructed of pink Milford granite, and was modeled after Merton College Chapel at Oxford. Its entrance is prominently located in a cross-gable projection, set in a round-arch opening flanked by smaller round-arch openings. The interior retains many fine original finishes, include oak ceiling trusses, an oaken circulation desk, and oak partitions in the reading areas that are typical of Gothic churches. The town of Hopedale's first proper library was established in 1840, and was located in a variet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soda Lime
Soda lime, a mixture of sodium hydroxide (NaOH) and calcium oxide (CaO), is used in granular form within recirculating breathing environments like general anesthesia and its breathing circuit, submarines, rebreathers, and hyperbaric chambers and underwater habitats. Its purpose is to eliminate carbon dioxide () from breathing gases, preventing carbon dioxide retention and, eventually, carbon dioxide poisoning. The creation of soda lime involves treating slaked lime with a concentrated sodium hydroxide solution. Chemical components The primary components of soda lime include: calcium oxide (CaO) constituting approximately 75%, water () accounting for around 20%, sodium hydroxide (NaOH) making up about 3%, and potassium hydroxide (KOH) present at approximately 0.1%. Anaesthesia During general anaesthesia, a patient's exhaled gases, containing carbon dioxide, pass through an anaesthesia machine's breathing circuit, containing a soda lime canister filled with soda lime granules. Medi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potash
Potash ( ) includes various mined and manufactured salts that contain potassium in water- soluble form.Potash , USGS 2008 Minerals Yearbook The name derives from ''pot ash'', plant ashes or soaked in water in a pot, the primary means of manufacturing potash before the Industrial Era. The word '''' is derived from ''potash''. Potash is produced worldwide in amounts exceeding 71.9 million |
Feldspars
Feldspar ( ; sometimes spelled felspar) is a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. The most common members of the feldspar group are the ''plagioclase'' (sodium-calcium) feldspars and the ''alkali'' (potassium-sodium) feldspars. Feldspars make up about 60% of the Earth's crust and 41% of the Earth's continental crust by weight. Feldspars crystallize from magma as both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar is known as anorthosite. Feldspars are also found in many types of sedimentary rocks. Etymology The name ''feldspar'' derives from the German , a compound of the words ' ("field") and ("flake"). had long been used as the word for "a rock easily cleaved into flakes"; was introduced in the 18th century as a more specific term, referring perhaps to its common occurrenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gneiss
Gneiss (pronounced ) is a common and widely distributed type of metamorphic rock. It is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. This rock is formed under pressures ranging from 2 to 15 kbar, sometimes even more, and temperatures over 300 °C (572 °F). Gneiss nearly always shows a banded texture characterized by alternating darker and lighter colored bands and without a distinct Cleavage (geology), cleavage. Gneisses are common in the ancient crust of Continental Shield, continental shields. Some of the oldest rocks on Earth are gneisses, such as the Acasta Gneiss. Description image:Orthogneiss Geopark.jpg, Orthogneiss from the Czech Republic In traditional English and North American usage, a gneiss is a coarse-grained metamorphic rock showing compositional banding (gneissic banding) but poorly developed schistosity and indistinct Cleavage (geology), cleavage. In other words, it i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
