|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||The Red Ridge prospect is along a northeast-trending ridge about a mile south of VABM Jaina. The prospect extends northeasterly into the Talkeetna Mountains C-4 quadrangle. The prospect is at an elevation of about 5,500 feet, in the S1/2 sec. 19, T. 28 N., R. 5 E., Seward Meridian. The location is accurate to within 1/4 mile. This is locality 47 of Csejtey and Miller, (1978).|
Geologic descriptionThe Red Ridge prospect consists of iron-stained, pyritic phyllite and quartz veins in a sequence of interlayered phyllite, argillite, graywacke and greenstone (Rose, 1967; Anderson, 1969). Samples of the pyritic material contain up to 1 part per million silver and 0.44 part per million gold. There are also numerous barren quartz veins. A sample of fault gouge contains 1,600 parts per million copper.
|Geologic map unit||(-148.594518503693, 62.4961198911272)|
|Mineral deposit model||Low sulfide gold-quartz veins?, Basaltic Cu? (Cox and Singer, 1986; model 36a?, 23?)|
|Mineral deposit model number||36a?, 23?|
|Alteration of deposit||The pyritic phyllite is oxidized.|
|Workings or exploration||
Samples of pyritic phyllite and quartz veins collected by the State of Alaska Department of Natural Resources contain up to 1 part per million silver and 0.44 part per million gold (Rose, 1967; Anderson, 1969). Exploration by Cities Service Minerals Company included ground magnetics, EM and IP geophysical surveys, and excavation of 2 trenches (Don Stevens, written communication, 1992). A sample of fault gouge collected by Anderson (1969) contained 1,600 parts per million copper.In the 1970s, the Red Ridge 1 to 82 lode claims were staked by Cities Service Minerals Company. As of January 1, 2000, no valid claims were present (Northern Associates Inc., written communication, 2001).
|Indication of production||None|
Additional commentsMAS/MILS number 20760014.
Anderson, R.E., 1969, Preliminary geochemistry and geology, Little Falls Creek area, Talkeetna Mts. Quadrangle, Alaska: Alaska Division of Mines and Geology Geochemical Report 19, 16 p., 1 sheet, scale 1:42,240.
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.
|Reporters||R.K. Rogers (U. S. Geological Survey contractor)|
|Last report date||10/1/2002|