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
Granite Rock Township, Redwood County, Minnesota was $35,000, and the median income for a family was $37,250. Males had a median income of $30,625 versus $20,500 for females. The per capita income for the township was $12,631. About 8.2% of families and 12.1% of the population were below the poverty line, including 15.0% of those under the age of eighteen and 6.5% of those sixty five or over. Granite Rock Township, Redwood County, Minnesota Granite Rock Township is one of the twenty-six townships of Redwood County, Minnesota, United States. The population was 241 at the 2000 census. Granite Rock Township was organized in 1890, and named