Summit Mountain

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale AN
Quadrangle map, 1:63,360-scale A-6
Latitude 61.06
Longitude -149.1
Nearby scientific data Find additional scientific data near this location
Location and accuracy West of Summit Mountain peak, 2,000 ft east of VABM Pass. Accurate within 500 ft. This is the approximate position from Park (1933) and locality 52 of Cobb (1972).

Geologic setting

Geologic description

According to Park (1933), Late Cretaceous Valdez Group argillite and graywacke are intruded and distorted by an irregular masses of argillically altered quartz diorite. A thin auriferous quartz vein strikes N 30 W, and dips 60 W. Rich float (presumably, in gold) reported just below the outcrop.
Geologic map unit (-149.102190513602, 61.059436809971)
Mineral deposit model Chugach-type low-sulfide Au-quartz veins (Bliss, 1992; model 36a.1).
Mineral deposit model number 36a.1
Age of mineralization Tertiary or younger; veins cut both Late Cretaceous Valdez Group rocks and Tertiary intrusive rocks.
Alteration of deposit The intrusive rocks have undergone argillic alteration.

Production and reserves

Workings or exploration Limited surface work reported in the summer of 1931 (Park, 1933).
Indication of production Undetermined

Additional comments

See also: Bahrenberg - ARDF number AN110.