Joanne

Prospect, Probably inactive

Commodities and mineralogy

Main commodities Ni

Geographic location

Quadrangle map, 1:250,000-scale SI
Quadrangle map, 1:63,360-scale D-8
Latitude 57.8696
Longitude -136.442
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is on southern Yakobi Island at an elevation of about 100 feet, east of the head of Greentop Harbor and 1.8 miles north-northeast of the south tip of the island. The prospect is 0.6 mile east of the center of sec. 23, T. 46 S., R. 56 E. It is MAS no. 0021140080 (U.S. Bureau of Land Management, 2002). The location is accurate within about a mile.

Geologic setting

Geologic description

Johnson and Karl (1985) map the rocks in the area of this prospect as Cretaceous graywacke intruded by Tertiary gabbronorite and tonalite. The only published information about the prospect is that it has been staked for nickel (U.S. Bureau of Land Management, 2002). It may be similar to the prospect near Squid Bay (SI008), which is associated with similar rocks.
Geologic map unit (-136.443843737857, 57.8692213239947)
Mineral deposit model Duluth Cu-Ni-PGE? (Cox and Singer, 1986; model 5a).
Mineral deposit model number 5a?
Age of mineralization Tertiary?

Production and reserves

Indication of production None

Additional comments

The prospect is in West Chichagof-Yakobi Wilderness.

References

References

U.S. Bureau of Land Management, 2002, Alaska mineral locations database report (Sitka quadrangle), July 2, 2002, 205 p. [http://imcg.wr.usgs.gov/dem.html]
Reporters H.C. Berg (U.S. Geological Survey)
Last report date 10/16/2004