Milford pink granite
| Igneous rock | |
| Composition | |
|---|---|
| Silicon dioxide, Aluminium oxide, Iron(III) oxide, Manganese(II) oxide, Calcium oxide, Magnesium oxide, Potassium oxide, Sodium oxide, Biotite |
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 39 square miles (100 km2) 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.