The Mining Districts of the Idaho Basin, and the Boise Ridge, Idaho - by Waldemar Lindgren - The Idaho Basin covers a large area in which many mines are located. A lot of placers occurred in this area due to erosion from the mountains surrounding the basin which carried large deposits. Some of the more well-known districts such as the Willow Creek and Rock Creek District, the Moore Creek District, Granite Creek District, Idaho City Gold Belt, Quartzburg...