|Quadrangle map, 1:250,000-scale||GU|
|Quadrangle map, 1:63,360-scale||D-1|
|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 descriptionThe 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.|
|Workings or exploration||Shallow hand trenching in three areas.|
|Indication of production||None|
Additional commentsAdditional information can be obtained from Ahtna Minerals in Anchorage, Alaska.
Richter, D.H., 1966, Geology of the Slana district, southcentral Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 2l, 54 p., 3 sheets, scale 1:63,360.
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|