Mary Ellen Prospect, Chisana Mining District, Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
Mary Ellen Prospect	Prospect
Chisana Mining District	Mining District
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

The prospect is in the Wrangell-St. Elias National Preserve.
Location: This prospect is in the headwater cirque to an unnamed south tributary to Klein Creek. It is at an elevation of about 6,900 feet, about 1,500 feet southeast of peak 7730. The site is in the SW1/4 of section 26, T. 4 N., R. 21 E. of the Copper River Meridian. This is National Park Service locality WRST-73 (unpublished data) and the coordinates for this record were provided by the National Park Service.
Geology: An unpublished National Park Service map and accompanying database identify this locality as a copper, silver, gold, and lead prospect where 6 lode claims were active from 1972 to 1981. The prospect is near the northwest contact of the Klein Creek pluton with Jurassic or Cretaceous siliciclastic rocks (Richter and Jones, 1973). The Klein Creek pluton varies from gabbro to granodiorite and has concordant biotite/hornblende K/Ar ages of 111 +/- 3.6 Ma (Richter, Lanphere, and Matson, 1975).
Workings: Six lode claims were active in this area from 1972 to 1981 and at least some surface prospecting has taken place.
Age: Mid-Cretaceous? The deposit is probably related to emplacement of the Klein Creek pluton which has concordant biotite/hornblende K/Ar ages of 111 +/- 3.6 Ma (Richter, Lanphere, and Matson, 1975).

Commodities (Major) - Ag, Au, Cu, Pb
Development Status: None

Other Databases

Link to USGS - Alaska:	NB090

Other Regions, Features and Areas containing this locality

References