Red Ridge Prospect, Yentna Mining District, Matanuska-Susitna Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Red Ridge Prospect | Prospect |
| Yentna Mining District | Mining District |
| Matanuska-Susitna Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 29' 47'' North , 148° 35' 31'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
MAS/MIL number 20760014.
Location: 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).
Geology: 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.
Workings: 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 commun., 1992). A sample of fault gouge collected by Anderson (1969) contained 1,600 parts per million copper. In the 1970's, 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 Commun., 2001).
Alteration: The pyritic phyllite is oxidized.
Commodities (Major) - Ag, Au, Cu
Development Status: None
Deposit Model: Low sulfide gold-quartz veins?, Basaltic Cu? (Cox and Singer, 1986; model 36a?,
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS - Alaska: | TK091 |
|---|
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