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
California Coastal Comm'n v. Granite Rock Co. of activities on federal lands. Granite Rock Company of Watsonville, California purchased the property and mineral rights to a large deposit of white limestone on Mount Pico Blanco in the Los Padres National Forest on the Big Sur coast of California in 1963. The limestone deposit is made up of two large, pharmaceutical grade limestone bodies known as the Pico Blanco body and the Hayfield body. It is the only high-grade deposit on the Pacific Coast outside Alaska within three miles of potential marine transportation. Reserves have been estimated to be from 600 million to a billion tons, reportedly the