Forget-Me-Not

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals bornite; malachite; pyrite

Geographic location

Quadrangle map, 1:250,000-scale VA
Quadrangle map, 1:63,360-scale C-1
Latitude 61.6617
Longitude -144.0394
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is on the east side of the upper valley of the Middle Fork Copper Creek (Val Alstine and Black, 1946, plate 30); it is at an elevation of about 4,700 feet in the SW1/4 section 30, T. 2 S., R. 8 E., of the Copper River Meridian. This prospect is approximately located, probably to within one-quarter mile. It is included in locality 72 of Cobb and Matson (1972) and locality 58 of Winkler and others (1981[OFR 80-892-B]).

Geologic setting

Geologic description

An open cut in Triassic Nikolai Greenstone exposed an irregular fractured zone that contains disseminated pyrite and some bornite (Moffit and Mertie, 1923; Van Alstine and Black, 1946). Malachite coats fractures in the zone. The copper mineralization is believed to be related to the regional mineralizing event that produced the rich Kennecott copper deposits in the McCarthy quadrangle (MacKevett and others, 1997).
Geologic map unit (-144.041494582954, 61.6612342397496)
Mineral deposit model Veins, disseminations, and fracture fillings in greenstone; probably related to Kennecott-type copper deposits (MacKevett and others, 1997)
Age of mineralization The copper mineralization is believed to be related to the mineralizing event that produced the rich Kennecott copper deposits in the McCarthy quadrangle to the east (MacKevett and others, 1997). This event is interpreted to have accompanied Late Jurassic or Early Cretaceous deformation and metamorphism (MacKevett and others, 1997, p. 88).

Production and reserves

Workings or exploration This prospect was explored with at least one open cut (Van Alstine and Black, 1946).
Indication of production None

Additional comments

This prospect is within the Wrangell-St. Elias National Park.

References