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Stockton Quartz

Prospect, Undetermined

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Commodities and mineralogy

Main commodities Au
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale CR
Quadrangle map, 1:63,360-scale A-1
Latitude 55.1267
Longitude -132.05645
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is about 0.3 mile west of lower Dolomi Bay and about 0.4 mile north-northeast of the center of section 7, T. 78 S., R. 89 E.

Geologic setting

Geologic description

As described by Maas and others (1991, 1995), the Stockton Quartz prospect has a flooded shaft with a small dump. The rocks on the dump consist of quartz and blocks of greenstone. Two samples contained 9 and 20 parts per billion gold. Herreid (1967) maps the rocks near the prospect as part of a band of greenschist in the Wales Group of Late Proterozoic and Cambrian age. The Wales Group rocks rocks in the Dolomi area are folded into a large dome centered over the eastern third of Paul Lake, and consist of several marble layers 200 to 1300 feet thick, interbedded with calcareous chlorite schist and marble.
Geologic map unit (-132.058119515465, 55.1263441103323)
Mineral deposit model Probably a low-sulfide, brecciated gold-quartz vein (Cox and Singer, 1986; model 36a).
Mineral deposit model number 36a
Age of mineralization The deposit is younger than the Late Proterozoic or Cambrian host rocks.

Production and reserves

Workings or exploration The only evidence of workings is a flooded shaft and a small dump. The prospect is on a patented claim.
Indication of production None

References

References

Herreid, Gordon, 1967, Geology and mineral deposits of the Dolomi area, Prince of Wales Island, Alaska: Alaska Division of Mines and Minerals Geologic Report 27, 17 p.
Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.
Maas, K.M., Still, J.C., Clough, A.H., and Oliver, L.K., 1991, Mineral investigations in the Ketchikan mining district, Alaska, 1990: southern Prince of Wales Island and vicinity: U.S. Bureau of Mines Open-File Report 33-91, 139 p., 12 sheets, scale 1:63,360.
Reporters D.J. Grybeck (Applied Geology)
Last report date 5/1/2004