|Quadrangle map, 1:250,000-scale||KC|
|Quadrangle map, 1:63,360-scale||A-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence, described only vaguely in early reports, is said to to be near the head of Annette Bay. The site is in section 25, T. 76 S., R. 91 E., of the Copper River Meridian. It corresponds to loc. 130 in Elliott and others (1978). The location is probably accurate within 0.5 mile.|
Geologic descriptionThe country rocks near the head of Annette Bay are recrystallized, Upper Jurassic or Cretaceous andesitic or basaltic flows and tuff, and a stock of quartz metadiorite that may be cogenetic with some of the volcanic rocks (Berg, 1972 [I 684]; Karl, 1992). The rocks were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time. The site has been described only as a reported occurrence of antimony and copper minerals (Berg and Cobb, 1967, p. 180).
|Geologic map unit||(-131.511682928888, 55.249654049818)|
|Mineral deposit model||Probably a lode deposit.|
|Indication of production||None|
Berg, H.C., 1972, Geologic map of Annette Island, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-684, 8 p., 1 sheet, scale 1:63,360.
Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
|Reporters||H.C. Berg, USGS|
|Last report date||7/6/1999|