Unnamed (near peaks of Little Taylor Mountains)

Occurrence, Undetermined

Commodities and mineralogy

Main commodities Au
Other commodities As; Cu
Ore minerals arsenopyrite; gold; pyrite
Gangue minerals quartz; sericite

Geographic location

Quadrangle map, 1:250,000-scale TA
Quadrangle map, 1:63,360-scale B-6
Latitude 60.8494
Longitude -157.1924
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on the crest of the Little Taylor Mountains, 3.1 miles southeast of the junction of Fork and Taylor creeks. The occurrence is near peak 2,100 at an elevation of about 2,100 feet, in the SW1/4 of section 24, T. 9 N., R. 45 W., of the Seward Meridian. This occurrence was included under the name 'Little Taylor Mts.' by Cobb (1976 [OF 76-606]).

Geologic setting

Geologic description

Several Cretaceous or Tertiary felsic dikes or sills cut mid-Cretaceous clastic sedimentary rocks of the Kuskokwim Group in the higher parts of the Little Taylor Mountains (Cady and others, 1955, p. 71, plates 1 and 6). At a locality a little northwest of the summit of the Little Taylor Mountains, the felsic dikes or sills trend northwest, and dip southwest, parallel to the bedding of the enclosing sedimentary rocks. The felsic intrusions and the enclosing sedimentary rocks are strongly silicified and pyritized. 'Traces of copper' were also noted by Cady and others (1955, p. 122) in the Little Taylor Mountains. In 2005, T. K. Bundtzen (oral communication, 2005) found thin, arsenopyrite-bearing quartz veins in or near felsic intrusives on the southwest flank of the mountains at an elevation of about 1850 in SW1/4 sec. 24, T9N, R45W of the Seward Meridian. Gold is not specifically noted but possibly is present, probably in the quartz veins.
Geologic map unit (-157.19469463152, 60.8487008170197)
Mineral deposit model Gold?-bearing altered felsic intrusive rocks.
Age of mineralization Late Cretaceous or early Tertiary, the age of the felsic plutons in southwest Alaska that intrude the mid-Cretaceous clastic sedimentary rocks of the Kuskokwim Group.
Alteration of deposit Silicification, pyritization, and sericitization.

Production and reserves

Workings or exploration Only some surface examination and sampling.
Indication of production None

References