of gold are known to be distributed in more than 100 Carlin-type deposits. The Carlin trend extends from the Pinon Range to the Tuscarora Mountains, an area 70 miles long and 10 miles wide. Epithermal, skarn, vein and Carlin-type deposits are also found in the neighboring Battle Mountain-Eureka trend to the southwest. Other sites of mining and mineralization include the Independence trend and Walker Lane trend. Nevada is the leading producer of barite in the US, particularly at the Greystone Mine in Lander County, where it is found in deep sea black shale and argillite. References Nevada