Unnamed (near headwaters of Main Creek) (ARDF #SW008) Cu

Unnamed (near headwaters of Main Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities	Cu
Ore minerals	quartz

Geographic location

Quadrangle map, 1:250,000-scale	SW
Quadrangle map, 1:63,360-scale	D-5
Latitude	56.9
Longitude	-157.5
Nearby scientific data	Find additional scientific data near this location
Location and accuracy	This site is located near the headwaters of Main Creek in T. 37 S., R. 51 or 52 W., of the Seward Meridian (MacKevett and Holloway, 1977, locality 4). Site location is accurate to within 4 miles.

Geologic setting

Geologic description At this site hydrothermal alteration is associated with a Tertiary subvolcanic pluton and Tertiary volcanic rocks (MacKevett and Holloway, 1977). No mention is made of ore or gangue minerals present).
Geologic map unit	(-157.502061396281, 56.8992474377802)
Mineral deposit model	Porphyry copper? (Cox and Singer, 1986, model 17)
Mineral deposit model number	17?
Alteration of deposit	Hydrothermal alteration of unknown type.

Production and reserves

Indication of production	None
Additional comments This occurrence is located on land selected by the Koniag Native Corporation.

References

MRDS Number	10308356
References Detterman, R.L., Miller, T.P., Yount, M.E., and Wilson, F.H.,1981, Geologic map the Chignik and Sutwik Island quadrangles Alaska: U.S. Geologic Survey Miscellaneous Investigations Series Map I-1229, 1 sheet, scale 1:250,000. MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
Reporters	S.H. Pilcher (Anchorage)
Last report date	1/31/2000