Conway granite Conway granite Conway granite is a typically pink mineral-rich igneous (or mesoperthitic) biotite granite. It is amphibole-free and of coarse particle size (with portions of the rock fine-grained or porphyritic). Conway granite has a relatively high concentration of thorium, at about 56 (±6) PPM; this amount is not enough to make the granite dangerously radioactive, but it is sufficient to make the rock a low-grade (almost certainly not economic, at least in the early years) source of thorium for a thorium fuel cycle. Geologist Edward Hitchcock named the granite in 1877 after the town of Conway, New Hampshire, which is
Fall River granite a mixture of the flesh red and light green varieties; the former predominating: the quartz is light gray, and the mica, usually black... it works easily and has a lighter and more lively appearance than Quincy granite. The granite quarry industry in Fall River had been established by 1840, employing 30 people, with the rock being transported to places such as Newport, New Bedford, Providence, Bristol, and New York City. Several granite quarries operated in the area in the late 19th century, the largest of which was the Beattie Granite Quarry, located near what is now North Quarry Street, near