|Quadrangle map, 1:250,000-scale||CR|
|Quadrangle map, 1:63,360-scale||A-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The location of the Silver Star prospect is uncertain. For this record, the site is about 1.4 miles west-northwest of the head of Windy Cove, in the NW1/4 section 16, T. 79 S., R. 82 E., of the Copper River Meridian. However, Maas and others (1991) could not find the prospect, and suggest that it may be farther to the west, possibly a mile or more away.|
Geologic descriptionAs described by Chapin (1916), the deposit at the Silver Star prospect is in limestone and consists of two parallel veins less than 2.5 feet thick. The veins contain sphalerite, chalcopyrite, galena, and 'notable' gold and silver. The workings consist of an adit with two drifts. There is no more recent description of the deposit and it could not be located by Maas and others (1991) or by Hedderly-Smith (1999 [Inventory]). The host rock probably is Heceta Limestone of Silurian age (Eberlein and others, 1983; Brew, 1996).
|Geologic map unit||(-133.068677453241, 55.0200498293465)|
|Age of mineralization||Probably Silurian or younger.|
|Workings or exploration||The workings consist of an adit with two drifts that date to before 1918.|
|Indication of production||None|
Additional commentsThe location of the Silver Star prospect is uncertain. It may be on land that has been conveyed to the Sealaska Corporation, or is under application for transfer to them.
Brew, D.A., 1996, Geologic map of the Craig, Dixon Entrance, and parts of the Ketchikan and Prince Rupert quadrangles, southeastern Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2319, 53 p., 1 sheet, scale 1:250,000.
Chapin, Theodore, 1916, Mining developments in southeastern Alaska: U.S. Geological Survey Bulletin 642-B, p. 73-104.
Cobb, E. H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-869, 262 p.
Eberlein, G.D., Churkin, Michael, Jr., Carter, Claire, Berg, H.C., and Ovenshine, A. T., 1983, Geology of the Craig quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-91, 52 p.
Hedderly-Smith, D.A., 1991, Report of the 1990 field season-Sealaska Mineral Reconnaissance Project: Sealaska Corporation: Sealaska Corporation, 2 vols., 180 p., 13 plates. (Unpublished report held by the Sealaska Corporation, Juneau, Alaska.)
Hedderly-Smith, D.A., 1992, Report of the 1991 field season - Sealaska Mineral Reconnaissance Project: Sealaska Corporation, 2 vols., 225 p. 23 plates. (Unpublished report held by the Sealaska Corporation, Juneau, Alaska.)
Hedderly-Smith, D.A., 1999, Inventory of metallic mineral prospects, showings and anomalies on Sealaska lands, 1988 through 1998: Sealaska Corporation, Juneau, Alaska, 217 p. (internal report held by Sealaska Corporation, Juneau, Alaska).
Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.
|Reporters||D.J. Grybeck (Applied Geology)|
|Last report date||5/1/2004|