Lucky Girl; Bremner Mining Company Mine, Nizina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Lucky Girl; Bremner Mining Company 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° 3' 6'' North , 143° 25' 11'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
198658
Long-form identifier:
mindat:1:2:198658:0
GUID (UUID V4):
ffae0ca1-6e33-4c91-bd05-8a547aebb8dc
The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: This mine is at the head of Golconda Creek. It is at an elevation of about 4,500 feet, 3,500 feet west of the pass between Golconda and Monahan creeks. It is accurately located near the southwest corner of section 26, T. 9 S., R. 11 E. of the Copper River Meridian. It is misidentified as the Yellowband mine on the McCarthy A-7 quadrangle map (1959 edition). This is locality 23 of MacKevett (1976).
Geology: The deposit at this mine consists of sparsely distributed gold in a series of subparallel quartz veins from a few centimeters to 1 meter thick (MacKevett, 1976). The veins cut metaflysch of the Cretaceous Valdez Group (MacKevett, 1978). The metasedimentary rocks are intruded by felsic dikes and cut by a north-trending system of vertical faults. The mine, which did not produce much gold, was developed by two adits and about 2,000 feet of drifts, crosscuts, and raises. There was a 50-ton-per-day mill, a hydroelectric power system, and other surface facilities (Moffit, 1937). Gold-bearing quartz veins in the Valdez Group are generally Early Tertiary in age (Goldfarb and others, 1997).
Workings: The mine, which did not produce much gold, was developed by two adits, and about 2,000 feet of drifts, crosscuts, and raises. There was a 50-ton-per-day mill, a hydroelectric power system, and other surface facilities (Moffit, 1937).
Age: Early Tertiary. Gold-bearing quartz veins in the Valdez Group are generally Early Tertiary in age (Goldfarb and others, 1997).
Alteration: Silicification.
Production: Minor production.
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
2 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 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | MC190 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainDomain
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References
