Milford pink granite Milford pink granite Milford pink granite, also known as Milford granite or Milford pink is a Proterozoic igneous rock located in and around the town of Milford, Massachusetts, covering an area of approximately 100 km, as mapped by the USGS. 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
Granite, Colorado between high, sheer rock outcroppings of buff/pink-colored Precambrian granite. Granite lies at the center of the Colorado Mineral Belt (CMB), a 50 mile-wide strip that runs north and south for 300 miles. Mineralization of the CMB came primarily by way of intrusions of Tertiary Period magmas. The primary ores of the CMB were generally deposited as mixed metal sulfide mineral veins containing pyrite, galena, sphalerite, chalcopyrite, and gold, silver, and copper. During the last glacial period native gold was freed from the host rock and deposited along the ancient roaring Arkansas River bed - much larger than it is today