Rebo Prospect, Chisana Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
Rebo Prospect	Prospect
Chisana Mining District	Mining District
Valdez-Cordova Census Area	Census Area
Alaska	State
USA	Country

The prospect is in the Wrangell-St. Elias National Preserve.
Location: This prospect is near the winter trail west of Cooper Pass. It is at an elevation of about 5,300 feet, about 6,000 feet south of elevation 6376 (Cooper). The site is in the SW1/4 of section 30, T. 6 N., R. 16 E. of the Copper River Meridian. This is National Park Service locality WRST-38 (unpublished data) and the coordinates for this prospect were provided by the National Park Service.
Geology: An unpublished National Park Service map and accompanying database identify this prospect. Five lode claims for copper and gold were staked at this locality and were active from 1974 to 1980 (U.S. Bureau of Mines, 1994). The northern contact of the mid-Cretaceous Nabesna pluton (Richter, Lanphere, and Matson, 1975) intrudes Triassic limestone on the east-facing slopes about 2,000 feet southwest of this prospect (Richter, 1971 [I-656], 1976).
Workings: Some surface prospecting has occurred in this area.
Age: Mid-Cretaceous? If the deposit is related to emplacement of the Nabesna pluton, it is mid-Cretaceous; K/Ar dates for the pluton range from 105 +/- 4.0 to 114 +/- 3.4 Ma (Richter, Lanphere, and Matson, 1975).

Commodities (Major) - Au, Cu
Development Status: None
Deposit Model: Cu skarn? (Cox and Singer, 1986; model 18b)

Other Databases

Link to USGS - Alaska:	NB028

Other Regions, Features and Areas containing this locality

References