Unnamed (east of Monahan Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale A-7
Latitude 61.0699
Longitude -143.2566
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on a ridge crest east of Monahan Creek. It is near elevation 6102 in the center of the S1/2 of section 22, T. 9 S., R. 12 E. of the Copper River Meridian. This is locality 22 of MacKevett (1976). The location is probably accurate to within 1,000 feet.

Geologic setting

Geologic description

This occurrence consists of numerous thin, sulfide-bearing quartz veins that cut Cretaceous Valdez Group metaflysch (MacKevett, 1976). The veins are assumed to be gold-bearing, like many other similar deposits in the general area (for example: MC189 through MC194). Gold-bearing quartz veins in the Valdez Group are generally Early Tertiary in age (Goldfarb and others, 1997).
Geologic map unit (-143.258639842703, 61.0694436328598)
Mineral deposit model Low sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)
Mineral deposit model number 36a
Age of mineralization Early Tertiary. Gold-bearing quartz veins in the Valdez Group are generally Early Tertiary in age (Goldfarb and others, 1997).
Alteration of deposit Silicification.

Production and reserves

Workings or exploration Only limited surface examination.
Indication of production None

Additional comments

The locality is in the Wrangell-Saint Elias National Park and Preserve.

References

References

Goldfarb, R.J., Miller, L.D., Leach, D.L., and Snee, L.W, 1997, Gold deposits in metamorphic rocks in Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 151-190.
Reporters Travis L. Hudson (Applied Geology, Inc.)
Last report date 1/12/2003