Unnamed (west of Alaska Chief)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Pb; Zn
Ore minerals galena; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale MF
Quadrangle map, 1:63,360-scale B-1
Latitude 58.436
Longitude -136.153
Nearby scientific data Find additional scientific data near this location
Location and accuracy This site is at an elevation of about 400 feet on the left limit of a southeast-flowing creek that enters Icy Strait about 1 mile west of the mouth of Glacier Bay. The occurrence is about 2 miles west-southwest of the Alaska Chief prospect (MF077) and about 5.6 miles northwest of Pt. Carolus. It is located within about 0.2 mile. The occurrence is the same as number 30 of MacKevett and others (1971) and number 98 of Kimball and others (1978).

Geologic setting

Geologic description

The mineral occurrence is within a large felsic granitic intrusion of Tertiary age (Brew and others, 1978). A representative sample from a 3-foot wide shear zone in the granite contained 7 ppm silver, 1500 ppm zinc, and 300 ppm lead (MacKevett and others, 1971, table 9).
Geologic map unit (-136.154835619696, 58.4356458191464)
Mineral deposit model Mineralized shear zone, distal.
Age of mineralization Tertiary.

Production and reserves

Workings or exploration No workings. Exploration limited to chip sample reported by MacKevett and others (1971, location 30).
Indication of production None

Additional comments

The mineral site is in Glacier Bay National Park and Preserve.

References