Conway granite

Conway granite is a typically pink mineral-rich igneous (or mesoperthitic) biotite granite.^[1] It is amphibole-free and of coarse particle size (with portions of the rock fine-grained or porphyritic).^[1]

Geologist Edward Hitchcock named the granite in 1877 after the town of Conway, New Hampshire, which is near where it is mined.^[2] The Old Man of the Mountain, a famous geologic feature in New Hampshire (which collapsed in 2003) was made of Conway granite.^[3]

Footnotes

^ ^a ^b "Conway Granite." Mineral Resources On-Line Spatial Data. U.S. Geological Survey. U.S. Department of the Interior. No date. Accessed 2011-03-30.
^ Billings and Williams, p. 17.
^ Hutchinson, Johnson, and Hamilton, p. 8.

Bibliography

Hutchinson, Robert; Johnson, William; and Hamilton, Dick. The Old Man of the Mountain. San Francisco: Browntrout Publishers, 2003.
Billings, Marland P. and Williams, Charles R. Geology of the Franconia Quadrangle, New Hampshire. Concord, N.H.: State Planning and Development Commission, 1935.