Red Ridge

Prospect, Inactive

Commodities and mineralogy

Main commodities Ag; Au; Cu
Ore minerals pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale B-4
Latitude 62.4966
Longitude -148.5923
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 setting

Geologic description

The 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.

Production and reserves

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 comments

MAS/MILS number 20760014.