|Quadrangle map, 1:250,000-scale||JU|
|Quadrangle map, 1:63,360-scale||B-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This placer mine is on Windfall Creek, 1 mile northwest of the divide between Windfall Creek and Montana Creek. It is at an elevation of approximately 500 feet, near the old Montana Creek trail, in the NE1/4NE1/4 section 20, T. 39 S., R. 65 E. of the Copper River Meridian. The location is accurate.|
Geologic descriptionThe Windfall Creek placer deposit was discovered in 1882 (Spencer, 1906) and has produced 249 ounces of gold (Redman and others, 1989). Old diversion ditches, water pipes and placer tailings lie along a 400-foot stretch of the creek. The mine area is underlain by black phyllite, felsic phyllite, greenschist, and greenstone. Gold-bearing quartz veins cut phyllite upstream near the head of Windfall Creek (JU103). The placer gravels that were worked lie in a small flat area, upstream from several small waterfalls emptying into Windfall Lake. There are abundant quartz fragments in the gravels, some with visible sulfides (Redman and others, 1989; Wells and others, 1986).
|Geologic map unit||(-134.705389461004, 58.4842729714491)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||The Windfall Creek placer deposit was discovered in 1882 and has produced 249 ounces of gold. Old diversion ditches, water pipes, and placer tailings lie along a 400-foot stretch of the Creek.|
|Indication of production||Yes; small|
|Production notes||The Windfall Creek placer deposit was discovered in 1882 and has produced 249 ounces of gold.|
Redman, E.C., Maas, K.M., Kurtak, J.M., and Miller, L.D., 1991, Section D: Juneau Gold Belt subarea, in U.S. Bureau of Mines, Mineral investigations in the Juneau Mining District, Alaska, 1984-1988: Volume 2 - Detailed mine, prospect, and mineral occurrence descriptions: U.S. Bureau of Mines Special Publication VOL. 2D, 424 p., 19 sheets.
Spencer, A.C., 1906, The Juneau Gold Belt, Alaska; and A Reconnaissance of Admiralty Island, Alaska: U.S. Geological Survey Bulletin 287, 161 p.
|Reporters||J.C. Barnett and L.D. Miller (Juneau, Alaska )|
|Last report date||12/15/2001|