|Quadrangle map, 1:250,000-scale||AN|
|Quadrangle map, 1:63,360-scale||A-6|
|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 descriptionAccording 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.|
|Workings or exploration||Limited surface work reported in the summer of 1931 (Park, 1933).|
|Indication of production||Undetermined|
Additional commentsSee also: Bahrenberg - ARDF number AN110.
Clark, S.H.B., and Yount, M.E., 1972, Reconnaissance geologic map and geochemical analyses of stream-sediment and rock samples of the Anchorage A-6 Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 351, 2 sheets, scale 1:63,360.
Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map 409, 1 sheet, scale 1:250,000.
|Reporters||D.P. Bickerstaff (USGS contractor); S.W. Huss (USGS)|
|Last report date||7/30/1998|