Unnamed (ridge west of Stevens Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities W
Ore minerals wolframite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale TA
Quadrangle map, 1:63,360-scale D-4
Latitude 60.95
Longitude -157.35
Nearby scientific data Find additional scientific data near this location
Location and accuracy Stevens Creek flows northeast from headwaters in the highest part of the Taylor Mountains. This occurrence is on the ridge on the west side of Stevens Creek. The map site is at an elevation of 2,400 feet, in the SE1/4 of section 13, T 10 N, R 46 W, of the Seward Meridian. It is approximately located, perhaps within 1 mile. This occurrence is locality 7 of Cobb (1972 [MF 384]; 1976 [OF 76-606]).

Geologic setting

Geologic description

The core of the Taylor Mountains is an Upper Cretaceous or Lower Tertiary granite pluton that sharply crosscuts and thermally metamorphoses mid-Cretaceous clastic sedimentary rocks of the Kuskokwim Group (Cady and others, 1955, p. 83, 121). Quartz veins are common in the pluton near its border and in the contact-metamorphic rocks. Wolframite was identified in vein quartz float that apparently weathered from the contact-metamorphic zone on the ridge west of Stevens Creek.
Geologic map unit (-157.352303842717, 60.9492995411054)
Mineral deposit model Wolframite in quartz veins
Age of mineralization Late Cretaceous or Early Tertiary, the age of the Taylor Mountain pluton.
Alteration of deposit Hornfels is developed in the country rocks adjacent to the Taylor Mountain pluton. Quartz veining is common in the border of the pluton and in the hornfels.

Production and reserves

Indication of production None

References