Unnamed Occurrence (ARDF - BG002; head of Martin Creek), Nizina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - BG002; head of Martin Creek) | - not defined - |
| Nizina Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
60° 51' 21'' North , 142° 26' 23'' West
Latitude & Longitude (decimal):
Köppen climate type:
This occurrence is within the Wrangell-St. Elias National Park.
Location: This occurrence is on the south end of the smaller of two lakes at the head of Martin Creek. It is at an elevation of about 4,850 feet in the SW 1/4 section 5, T 12 S, R 17 E, of the Copper River Meridian. It is locality 2 of Cobb (1972 [MF 373]; 1979 [OF 79-1246]). The larger of the two lakes at the head of Martin Creek is mislabeled 'Slender Lake' on the 1984 edition of the U.S. Geological Survey Bering Glacier D-4 quadrangle map. Slender Lake is the the headwaters of Bearhole Creek (Brabb and Miller, 1962).
Geology: A quartz vein crosscutting metamorphosed flysch of the Cretaceous Valdez Group contains trace amounts of gold at this locality. A 500-gram sample of the vein yielded a flake of free gold (about 0.0001 gram) after being crushed and panned (Brabb and Miller, 1962).
Workings: Reconnaissance surface observations have been completed at this locality (Brabb and Miller, 1962).
Age: Tertiary. The quartz vein crosscuts Valdez Group flysch that was metamorphosed in the Early Tertiary (Hudson and Plafker, 1982).
Commodities (Major) - Au
Development Status: None
Deposit Model: Low-sulfide Au-quartz vein (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.
Detailed Mineral List:
| ⓘ Native Gold Formula: Au |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| 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 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | BG002 |
|---|
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