Prospect, Inactive

Commodities and mineralogy

Main commodities Th; U
Ore minerals uranium and thorium are concentrated in iron oxides
Gangue minerals opal; quartz; tourmaline

Geographic location

Quadrangle map, 1:250,000-scale GU
Quadrangle map, 1:63,360-scale D-1
Latitude 62.86
Longitude -144.2
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Snipe uranium-thorium prospect is at an elevation of 4,300 feet in an unnamed west-flowing tributary to the upper East Fork of Indian Creek. It is about 3.4 miles north of the west end of Long Lake in the SW1/4SW1/4, section 36, T. 13 N., R. 6 E., of the Copper River Meridian. The prospect is limited to a 30 foot by 50 feet outcrop in a stream cut. (WGM 1979).

Geologic setting

Geologic description

The Snipe prospect is in a coarse-grained potassic-diorite phase of the Pennsylvanian to Permian, Ahtell pluton, possibly near a contact with the Grubstake quartz monzonite phase (Richter, 1966). The prospect consists of vuggy quartz-tourmaline vein material bordered by bleached, clay-rich alteration zones in Indian Creek quartz monzonite, a phase of the Ahtell pluton defined by WGM Inc. (1979). Scintillometer readings vary up to 3,500 cps (over 8 times background) and grab samples contain up to 730 ppm uranium and 8,650 ppm thorium (WGM Inc., 1979). The prospect is limited to a 30 foot by 50 feet outcrop in a stream cut (WGM Inc., 1979).
Geologic map unit (-144.202205272846, 62.8596071174279)
Mineral deposit model Vein-type uranium?
Age of mineralization Probably associated with emplacement of Richter's (1966) Permian or possibly Jurassic, diorite to quartz-diorite complex.
Alteration of deposit Marked by pyrite, quartz, tourmaline, and sericitized plagioclase.

Production and reserves

Workings or exploration Shallow hand trenching in three areas.
Indication of production None

Additional comments

Additional information can be obtained from Ahtna Minerals in Anchorage, Alaska.


MRDS Number 10307487


WGM Inc., 1979, 1978 Annual Progress Report, Uranium Exploration, Ahtell Creek Area, Volume I: WGM Inc., 39 p., appendices, 4 maps. (Report available, Ahtna Mineral Co., Anchorage, Alaska).
Reporters W.T. Ellis (Alaska Earth Sciences), C.C. Hawley (Hawley Resource Group), and W.J. Nokleberg (U.S. Geological Survey)
Last report date 12/6/2000