Milford pink granite, also known as Milford granite or Milford pink is a

Proterozoic The Proterozoic () is a geological eon spanning the time interval from 2500 to 538.8million years ago. It is the most recent part of the Precambrian "supereon". It is also the longest eon of the Earth's geologic time scale, and it is subdivided ...

igneous rock Igneous rock (derived from the Latin word ''ignis'' meaning fire), or magmatic rock, is one of the three main The three types of rocks, rock types, the others being Sedimentary rock, sedimentary and metamorphic rock, metamorphic. Igneous rock ...

located in and around the town of

Milford, Massachusetts Milford is a town in Worcester County, Massachusetts, United States. The population was 30,379 according to the 2020 census. First settled in 1662 and incorporated in 1780, Milford became a booming industrial and quarrying community in the 19th c ...

, covering an area of approximately , as mapped by the

USGS The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, a ...

. It is also sometimes referred to as Braggville granite, for several quarries in the neighboring village of

Braggville, Massachusetts Braggville is a former postal village located in Massachusetts, now within the towns of Holliston in Middlesex County, Medway in Norfolk County and Milford in Worcester County. Though people had settled the land long before the incorporation of ...

. 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 The Smithsonian Institution ( ), or simply the Smithsonian, is a group of museums and education and research centers, the largest such complex in the world, created by the U.S. government "for the increase and diffusion of knowledge". Founded ...

. Milford pink granite is quarried by the Fletcher Granite Company, at their Lumber Street quarry in Hopkinton.

Description

The granite is described as a light gray or light pinkish-gray to a medium, slightly pinkish or pinkish and greenish-gray

biotite Biotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula . It is primarily a solid-solution series between the iron-endmember annite, and the magnesium-endmember phlogopite; more alumino ...

granite Granite () is a coarse-grained (phaneritic) intrusive igneous rock composed mostly of quartz, alkali feldspar, and plagioclase. It forms from magma with a high content of silica and alkali metal oxides that slowly cools and solidifies undergro ...

with spots from across and in some cases tapering out to in length. The biotite is typically in clots or short streaks. It is commonly locally

gneiss Gneiss ( ) 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. Gneiss forms at higher temperatures an ...

ic. The color of the stone is governed mainly by its

feldspars Feldspars are 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) feldsp ...

, pink from the

potash Potash () includes various mined and manufactured salts that contain potassium in water-soluble form.

and green from the

soda lime Soda lime is a mixture of NaOH and CaO chemicals, used in granular form in closed breathing environments, such as general anaesthesia, submarines, rebreathers and recompression chambers, to remove carbon dioxide from breathing gases to prevent ...

feldspar.

Examples of use

;Massachusetts * Bancroft Memorial Library, Hopedale (1898) *

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 ...

, Boston (1895) *

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 c ...

, Boston (1892) *

Memorial Hall A memorial hall is a hall built to commemorate an individual or group; most commonly those who have died in war. Most are intended for public use and are sometimes described as ''utilitarian memorials''. History of the Memorial Hall In the aft ...

Milford Milford may refer to: Place names Canada * Milford (Annapolis), Nova Scotia * Milford (Halifax), Nova Scotia * Milford, Ontario England * Milford, Derbyshire * Milford, Devon, a place in Devon * Milford on Sea, Hampshire * Milford, Shro ...

(1884) *Town Hall, Hopedale (1886) * Worcester City Hall,

Worcester Worcester may refer to: Places United Kingdom * Worcester, England, a city and the county town of Worcestershire in England ** Worcester (UK Parliament constituency), an area represented by a Member of Parliament * Worcester Park, London, Engla ...

(1898) ;New York City *

American Museum of Natural History The American Museum of Natural History (abbreviated as AMNH) is a natural history museum on the Upper West Side of Manhattan in New York City. In Theodore Roosevelt Park, across the street from Central Park, the museum complex comprises 26 inter ...

(1869) *

Brooklyn Museum The Brooklyn Museum is an art museum located in the New York City borough of Brooklyn. At , the museum is New York City's second largest and contains an art collection with around 1.5 million objects. Located near the Prospect Heights, Crown H ...

Brooklyn Brooklyn () is a borough of New York City, coextensive with Kings County, in the U.S. state of New York. Kings County is the most populous county in the State of New York, and the second-most densely populated county in the United States, be ...

(1895) * General Post Office Building (1912) *

Pennsylvania Station Pennsylvania Station (often abbreviated Penn Station) is a name applied by the Pennsylvania Railroad (PRR) to several of its grand passenger terminals. Several are still in active use by Amtrak and other transportation services; others have been ...

(1910) *

University Club of New York The University Club of New York (also known as University Club) is a private social club at 1 West 54th Street and Fifth Avenue in the Midtown Manhattan neighborhood of New York City. Founded to celebrate the union of social duty and intellec ...

(1899) ;Washington, D.C. * Eccles Federal Reserve Building (1937) * First Division Monument (1924) *

Zero Milestone The Zero Milestone is a zero mile marker monument in Washington, D.C. intended as the initial milestone from which all road distances in the United States should be measured when it was built. At present, only roads in the Washington, D.C. a ...

(1923) ;Other *

Allegheny County Courthouse The Allegheny County Courthouse in downtown Pittsburgh, Pennsylvania, is part of a complex (along with the old Allegheny County Jail) designed by H. H. Richardson. The buildings are considered among the finest examples of the Romanesque Revi ...

Pittsburgh, Pennsylvania Pittsburgh ( ) is a city in the Commonwealth (U.S. state), Commonwealth of Pennsylvania, United States, and the county seat of Allegheny County, Pennsylvania, Allegheny County. It is the most populous city in both Allegheny County and Wester ...

(1888) *

Cullum Hall Cullum is a surname. Notable people with the surname include: * Albert Cullum (1921–2003), American educator * Ben Cullum, British musician * George Washington Cullum (1809–1892), American Civil War general and Superintendent of the U.S. Mili ...

of The United States Military Academy at West Point, New York (1898) *

John J. Glessner House The John J. Glessner House, operated as the Glessner House, is an architecturally important 19th-century residence located at 1800 S. Prairie Avenue, Chicago, Illinois. Built during the Gilded Age, it was designed in 1885–1886 by architect He ...

Chicago, Illinois (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name ...

(1887) *

Baltimore, Maryland Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...

(1911) *

Singapore Changi Airport Singapore Changi Airport, commonly known as Changi Airport , is a major civilian international airport that serves Singapore, and is one of the largest transportation hubs in Asia. As one of the world's busiest airports by international passe ...

Changi Changi () is a planning area located in the geographical region of Tanah Merah in the East Region of Singapore. Sharing borders with Pasir Ris and Tampines to the west, Changi Bay to the southeast, the South China Sea to the east and the Seran ...

Singapore Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, borde ...

(2002)

References

{{Reflist

External links

Boston Public Library construction photos, showing Milford quarries
Granite Geology of Massachusetts

Description

Examples of use

See also

References

External links