Unnamed (north of Meadow Lake)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Fe
Other commodities Ti
Ore minerals magnetite

Geographic location

Quadrangle map, 1:250,000-scale IL
Quadrangle map, 1:63,360-scale C-3
Latitude 59.6559
Longitude -154.0587
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is about halfway between Meadow Lake and Pile Bay in the headwaters of a northeast tributary to Upper Copper Lake. It probably is at an elevation of about 1,000 feet in the SW1/4 NW1/4 sec. 16, T. 6 S., R. 28 W., Seward Meridian. The accuracy of the occurrence is uncertain (see Geologic description). The site is location 24 of Detterman and Cobb (1972).

Geologic setting

Geologic description

A Cretaceous or Tertiary granodiorite batholith or large stock intrudes the Triassic Cottonwood Bay Greenstone near this occurrence (Detterman and Reed, 1980). Up to about 5 percent magnetite is disseminated in the greenstone within about 100 to 200 feet of its contact with the granodiorite. The deposit is probably large but low grade (Berg and Cobb, 1967). Location 24 of Detterman and Cobb (1972) appears to be in granodiorite mapped by Detterman and Reed (1980); instead it probably is in Cottonwood Bay Greenstone, somewhat to the east.
Geologic map unit (-154.06085381467, 59.6552309208142)
Age of mineralization Probably Triassic or younger.

Production and reserves

Workings or exploration Berg and Cobb (1967) reported that the occurrence had been staked, but there is no report of any workings.
Indication of production None

References