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Siniktanneyak--East

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Ag; Cu
Other commodities Ba

Geographic location

Quadrangle map, 1:250,000-scale HW
Quadrangle map, 1:63,360-scale B-4
Latitude 68.34
Longitude -158.3
Nearby scientific data Find additional scientific data near this location
Location and accuracy Location plotted is locality 5 of Nelson and others (1979, p. B15), in T34N, R2E; on nose of prominent ridge between two major tributaries of Makpik Creek draining eastern part of Siniktanneyak massif; located to within 1 mi (1.6 km).

Geologic setting

Geologic description

The occurrence is in a 6 ft (1.8 m) wide, orange-weathering, pyritiferous feldspathic dike? in pillow basalt that structurally underlies a Jurassic? mafic/ultramafic complex.
Geologic map unit (-158.302947592327, 68.3394505852415)
Mineral deposit model Lode

Production and reserves

Workings or exploration Mineralized sample contains 20 ppm Ag, 5000 ppm Ba, and 300 ppm Cu (Nelson and others, 1979, p. B14-16).
Indication of production None

References

MRDS Number A106165

References

Nelson, S.W., Nokleberg, W.J., Miller-Hoare, M., and Mullen M.W., 1979, Siniktanneyak Mountain ophiolite, in Johnson, K.M., and Williams, J.R., eds., The United States Geological Survey in Alaska--Accomplishments during 1978: U.S. Geological Survey Circular 804-B, p. B14-B16
Reporters J.H. Dover
Last report date 9/30/1996