Unnamed (northeast of Avaraart Lake)

Prospects, Active?

Commodities and mineralogy

Main commodities Ag; Cu; Pb; Zn

Geographic location

Quadrangle map, 1:250,000-scale SP
Quadrangle map, 1:63,360-scale A-6
Latitude 67.13
Longitude -155.54
Nearby scientific data Find additional scientific data near this location
Location and accuracy This site represents several prospects in about a 3-square-mile area, approximately 7 miles northeast of Avaraart Lake. The coordinates are for the center of the area, at the intersection of sections 14, 15, 22, and 23, T. 20 N., R. 15 E., of the Kateel River Meridian. Accuracy of location is 2000 ft. The site corresponds to locality 62 of Grybeck and Nelson (1981).

Geologic setting

Geologic description

These prospects explore a silver-basemetal volcanogenic massive sulfide deposit in a sequence of low to medium grade metamorphosed basaltic and rhyolitic rocks, submarine ash flow tuffs, and pelitic and carbonaceous sedimentary rocks known as the Ambler schist belt. The deposit is a Devonian or Mississippian in age, based on fossil evidence and U-Pb radiometric dating in the region (Hitzman and others, 1986). Rocks are commonly iron stained in the area. The deposit has been explored by numerous prospect pits and surface mapping.
Geologic map unit (-155.542725060352, 67.1294759477696)
Mineral deposit model Kuroko massive sulfide (Cox and Singer, 1986; model 28a)
Mineral deposit model number 28a
Age of mineralization Syngenetic massive sulfide in Devonian or Mississippian host rocks.
Alteration of deposit Rocks in area commonly are iron stained.

Production and reserves

Workings or exploration Numerous prospect pits and surface mapping.
Indication of production None

References

MRDS Number 10308339

References

Hitzman, M.W., Profett, J.M., Jr., Schmidt, J.M., and Smith, T.E., 1986, Geology and mineralization of the Ambler district, northwestern Alaska: Economic Geology, v. 81, p. 1592-1618.
Reporters S.W. Nelson (Anchorage, Alaska)
Last report date 9/22/1999