|Quadrangle map, 1:250,000-scale||TK|
|Quadrangle map, 1:63,360-scale||B-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is at an elevation of about 4,700 feet on the west side of a south tributary to the upper East Fork, Iron Creek. It is about 0.1 mile south-southwest of the center of sec. 24, T. 26 N., R. 3 E., Seward Meridian. The location is accurate within 1/2 mile. This is locality 65 of Csejtey and Miller (1978) and locality 65 of Singer and others (1978).|
Geologic descriptionThe rocks in the area of this occurrence includes Tertiary felsic and mafic, subaerial volcanic rocks and related shallow intrusions (Csejtey and others, 1978). Nearby, at a lower elevation, a Jurassic plutonic and metamorphic assemblage is mainly of quartz diorite, granodiorite, amphibolite, and greenschist. The occurrence is a malachite-stained, pyrite-bearing quartz vein that cuts probable Tertiary, volcanic rock. A float sample contains 1,500 parts per million copper and detectable (but less than 10 parts per million) tin (Miller and others, 1978).
|Geologic map unit||(-148.821112745566, 62.3267082877091)|
|Age of mineralization||Probably Tertiary or younger.|
|Alteration of deposit||Malachite staining.|
|Workings or exploration||Only surface sampling by the U.S. Geological Survey (Miller and others, 1978).|
|Indication of production||None|
Cobb, E.H., and Csejtey, Bela, Jr., 1980, Summaries of data on and lists of references to metallic and selected nonmetallic mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-716, 63 p.
Csejtey, Bela, Jr., and Miller, R.J., 1978, Map and table describing metalliferous and selected nonmetalliferous mineral deposits in the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-B, 22 p., 1 sheet, scale 1:250,000.
Csejtey, Bela, Jr., Nelson, W.H., Jones, D.L., Silberling, N.J., Dean, R.M., Morris, M.S., Lanphere, M.A., Smith, J.G., and Silberman, M.L, 1978, Reconnaissance geologic map and geochronology, Talkeetna Mountains quadrangle, northern part of Anchorage quadrangle, and southwest part of Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-A, 60 p., 1 sheet, scale 1:250,000.
Miller, R.J., Cooley, E.F., O'Leary, R.M., Garmezy, Larry, Csejtey, Bela, Jr., Smith, T.E., and Cleveland, M.N., 1978, Analysis of geochemical samples from the Talkeetna Mountains quadrangle, Alaska: U.S. Geological Survey Open-file Report 78-1052, 279 p., 3 sheets, scale 1:250,000.
|Reporters||D. Bickerstaff (U.S. Geological Survey)|
|Last report date||10/1/2002|