Juneau gold belt nearby Admiralty Island, was conducted, concentrating on ore deposits and economic geology. The 1986 study by the Bureau of Mines concentrated on the mineral resources of the northern region of southeast Alaska, specifically covering the Juneau gold belt. Aside from information on geological formations of the area, data related to mining was also examined. The Juneau gold belt comprises a section of the Juneau Mining District, the other sections being Glacier Bay/Mt. Fairweather, the volcanic area of West Lynn Canal/Haines/Porcupine, and the Molybdenite area. The northern part of the belt, the Eagle River region, extends northwestward from Salmon Creek to
Juneau gold belt fissure fillings of the area are comparable with the California "mother lode" deposits. Most of the gold mines in the Juneau belt occur in the band of black slate which lies between the schists to the northeast and the greenstones to the southwest. "The complex of veins which follow this black slate is described as the main lode system of the Juneau belt." "Parallelism of vein systems and ore deposits with the outcrops of bed-rock formations...is one of the noteworthy characteristics of the district." This results in a "linear distribution of the mines." Most of the gold deposits are found