Unnamed (east of the head of Lake Fork of Paint River)

Prospect, Inactive

Commodities and mineralogy

Main commodities Fe
Other commodities Ti
Ore minerals magnetite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale IL
Quadrangle map, 1:63,360-scale A-4
Latitude 59.2486
Longitude -154.4666
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is at an elevation of about 2,050 feet, east of the head of Lake Fork of Paint River and 0.9 mile northwest of hill 3169. The prospect is in the SW1/4 SW1/4 sec. 2, T. 11 S., R. 31 W., Seward Meridian. The site is locality 21 of Detterman and Cobb (1972), and is accurate within about 0.5 mile.

Geologic setting

Geologic description

The country rock at this prospect is mainly Jurassic quartz diorite that locally contains roof pendants of Jurassic mafic and ultramafic igneous rocks (Detterman and Reed, 1980). The prospect consists of small bodies of magnetite-quartz and magnetite-rich skarn in the mafic and ultramafic rocks (Berg and Cobb, 1967; Detterman and Reed, 1980).
Geologic map unit (-154.468730831606, 59.2479146642467)
Mineral deposit model Fe skarn (Cox and Singer, 1986, model 18d).
Mineral deposit model number 18d
Age of mineralization Jurassic.
Alteration of deposit Contact metasomatism: formation of replacement bodies of iron-rich skarn in mafic and ultramafic rocks intruded by quartz diorite.

Production and reserves

Workings or exploration Prospect was staked but little work was done (Berg and Cobb, 1967).
Indication of production None