Tiflighak Bay

Occurrence, Inactive

Commodities and mineralogy

Main commodities Pb
Ore minerals galena
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SL
Quadrangle map, 1:63,360-scale D-6
Latitude 63.76
Longitude -171.65
Nearby scientific data Find additional scientific data near this location
Location and accuracy Tiflighak Bay is a small concave shoreline on the east side of the northwest tip of St.Lawrence Island. This is an area of steep sea cliffs cut into intrusive rocks of the Sevuokuk pluton. This location is only known from an oral communication (Cobb, 1980, p. 60). Small galena-bearing quartz veins are said to be exposed near the top of the cliff. This site is probably located within 0.5 mile. It is locality 1 of Cobb (1972) and Cobb (1980) summarized relevant references under the name 'Tiflighak Bay'.

Geologic setting

Geologic description

Galena in small quartz veins in Cretaceous quartz monzonite exposed near top of cliff (oral communication, Bela Csejtey, Jr. May 24, 1972; as cited by Cobb, 1972; 1980).
The Sevuokuk pluton in the vicinity of this site is biotite quartz monzonite (Csejtey, Patton and Miller, 1971) for which one K/Ar determination indicates an age of 108 +/- 3.2 Ma (Patton and Csejtey, 1980).
Geologic map unit (-171.652804793075, 63.7590756079382)
Mineral deposit model Vein in granitic rock; polymetallic veins? (Cox and Singer, 1986; model 22c?).
Mineral deposit model number 22c?
Age of mineralization Not known; assumed to be mid -Cretaceous, the age of the associated granitic rocks.

Production and reserves

Workings or exploration None
Indication of production None