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
Dedham Granite notable building projects in and around Dedham. It was used for St. Mary's Church (1880), St. Paul's Church (1858), Memorial Hall (1868), the Boston and Providence Railroad station (1882), the Dedham Public Library (1888), Trinity Church in Copley Square. There are several pieces of it arraigned decoratively along East Street in Dedham, between High and Avery Streets. These pieces were remnants of the railroad abutment that was dismantled in 2008. Plymouth Rock is also a piece of Dedham Granite, having been moved to the coast by a glacier 20,000 years ago. Dedham Granite Dedham Granite is a light grayish-pink to