Commercial production of industrial garnet in the United States is more than a century old. Almandite, the abundant iron-aluminum silicate variety of garnet, is the primary garnet used in industrial applications. The development of technology and applications for garnet abrasives is far greater in the United States than in other countries. One reason is the large, high-quality abrasive garnet deposit in Warren County, NY. This deposit was the first in the United States to be commercially developed, and is still producing today. (Production is from the same deposit, but not the same mine site.) Garnet is produced from another deposit in New York as a byproduct of wollastonite production. Additionally, Maine, Montana, North Carolina, and Idaho also have significant garnet deposits. Currently, garnet production is limited to deposits in New York and Idaho.