Unnamed (south of lower Monte Cristo Creek)

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu

Geographic location

Quadrangle map, 1:250,000-scale NB
Quadrangle map, 1:63,360-scale A-4
Latitude 62.2169
Longitude -142.9296
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is about 2,600 feet south of Monte Cristo Creek on the west side of the valley of the Nabesna River. It is at an elevation of about 3,100 feet and about 1,000 feet north-northeast of elevation 3450. The site is in the NW1/4 of section 13, T. 5 N., R. 13 E. of the Copper River Meridian. It is National Park Service locality WRST-22 (unpublished data) and the coordinates for this prospect were provided by the National Park Service.

Geologic setting

Geologic description

An unpublished National Park Service map and accompanying database identify this locality as a copper porphyry prospect. It is in the southwestern part of the mid-Cretaceous, Nabesna pluton near a porphyry stock inferred to be Tertiary in age (Richter, 1973).
Geologic map unit (-142.93172649761, 62.2165105857022)
Mineral deposit model Porphyry Cu (Cox and Singer, 1986; model 18a)
Mineral deposit model number 18a
Age of mineralization Cretaceous or Tertiary, the age of the host and nearby intrusive rocks.

Production and reserves

Indication of production None

Additional comments

The prospect is in the Wrangell-St. Elias National Preserve.

References

Reporters Travis L. Hudson (Applied Geology)
Last report date 11/24/2002