1. Mineral Resources
  2. Online Spatial Data
  3. Alaska Resource Data File (ARDF)

Unnamed (southwest of VABM Iron)

Occurrence, Inactive

Map
KML
XML
GeoJSON

Commodities and mineralogy

Main commodities Ag; Co; Cu; Ni
Other commodities As
Ore minerals iron oxides; pyrite

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale B-5
Latitude 62.3428
Longitude -149.474
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 3,000 feet on a hillside northeast of Sheep Creek. It is 5 miles west of Rainbow Lake and 1.9 miles southwest of VABM Iron. The location is accurate to within 1/2 mile.

Geologic setting

Geologic description

This occurrence consists of dark red to yellow, pyrite-bearing gossan in Paleozoic(?) mafic metavolcanic rocks. No ore minerals other than pyrite are visible (Csejtey and Miller, 1978). Rock samples contain up to 7,000 parts per million copper, 2,000 parts per million arsenic, 700 parts per million cobalt, 700 parts per million nickel, and 3 parts per million silver (Miller and others, 1978).
Geologic map unit (-149.47623603097, 62.3422991547033)
Mineral deposit model Basaltic copper (Cox and Singer, 1986; model 23)
Mineral deposit model number 23
Alteration of deposit Iron-oxide alteration.

Production and reserves

Workings or exploration Limited surface sampling by the U.S. Geological Survey (Miller and others, 1978).
Indication of production None

References

References

Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and table describing metalliferous and selected nonmetalliferous mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-B, 22 p., 1 sheet, scale 1:250,000.
Csejtey, Bela, Jr., Nelson, W.H., Jones, D.L., Silberling, N.J., Dean, R.M., Morris, M.S., Lanphere, M.A., Smith, J.G., and Silberman, M.L, 1978, Reconnaissance geologic map and geochronology, Talkeetna Mountains quadrangle, northern part of Anchorage quadrangle, and southwest part of Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-A, 60 p., 1 sheet, scale 1:250,000.
Miller, R.J., Cooley, E.F., O'Leary, R.M., Garmezy, Larry, Csejtey, Bela, Jr., Smith, T.E., and Cleveland, M.N., 1978, Analysis of geochemical samples from the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-1052, 279 p., 3 sheets, scale 1:250,000.
Reporters R.K. Rogers (U. S. Geological Survey contractor)
Last report date 10/4/2002