Yellowband Mine, Nizina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Yellowband Mine | Mine |
| Nizina Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 1' 41'' North , 143° 24' 3'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
203030
Long-form identifier:
mindat:1:2:203030:5
GUID (UUID V4):
24c7ec07-3f41-4e88-8f70-7332c0e3b226
The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: The Yellowband mine is on the north side of a cirque at the head of an unnamed east tributary to Golconda Creek. It is at an elevation of about 5,200 feet, 7,000 feet north-northeast of peak 6635 and 6,000 feet east-northeast of the Bremner landing strip. This is locality 9 of MacKevett (1976); the location is probably accurate to within 1,000 feet. Cobb and MacKevett (1980) included this mine under the name 'Yellow Band'. The location of the Yellowband mine on the McCarthy A-7 topographic map (1959 edition) is incorrect.
Geology: The deposit at this mine consists of gold-bearing quartz veins generally less than 25 centimeters thick that are localized along steeply dipping felsic dikes (MacKevett (1976). Three open cuts in 1935 showed gold along fractures and in quartz-calcite veins and replacements along the faulted and brecciated hanging wall of a steeply-dipping felsic dike (Moffit, 1937). The dike is 12 to 15 feet thick, strikes N 5 W, and dips east. The deposits were developed by several hundred meters of underground workings and produced about 750 ounces of gold (Smith, 1942; MacKevett, 1976]). The veins and dikes cut Cretaceous Valdez Group metaflysch (MacKevett, 1978). Gold-bearing quartz veins in the Valdez Group are generally Early Tertiary in age (Goldfarb and others, 1997).
Workings: Open cuts explored the deposits in 1935, and by 1940 there were several hundred meters of underground workings (Smith, 1942; MacKevett, 1976).
Age: Early Tertiary. Gold-bearing quartz veins in the Valdez Group are generally Early Tertiary in age (Goldfarb and others, 1997).
Alteration: Silicification.
Production: Total production was about 750 ounces of gold (MacKevett, 1976).
Commodities (Major) - Au
Development Status: Yes; small
Deposit Model: Low sulfide Au-quartz veins (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
3 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | MC193 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainDomain
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References
