Boulder Creek Prospect (Grouse Creek), Koyuk Mining District, Nome Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Boulder Creek Prospect (Grouse Creek) | Prospect |
| Koyuk Mining District | Mining District |
| Nome Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 1' 48'' North , 162° 13' 11'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Elim | 340 (2017) | 46.0km |
Location: The original reference for this occurrence (West, 1953) describes it as on Grouse Creek whch is the same as Boulder Creek (BN089) on the current USGS topographic map of the area (Bendeleben A-1 quadrangle). The current topographic map shows Grouse Creek to be the northeast tributary to Boulder Creek and it was this location that was identified as locality 57 by Cobb (1972; MF 417; 1975; OFR 75-429). This prospect is here taken to be on Boulder Creek as shown on the current topographic map of the area. Boulder Creek is a small north tributary to the middle Tubutulik River.
Geology: West (1953) noticed the remains of old placer mine workings on this creek, as well as coal-bearing rocks in its headwaters, and collected a slightly radioactive heavy-mineral concentrate containing ilmenite, magnetite, garnet, and sphene. The Death Valley sandstone uranium deposit (BN089) is now known to be in the headwaters of this stream (Dickinson and others, 1987). The upper part of Boulder Creek approximately coincides with the contact between the Cretaceous Darby pluton to the west and early Eocene continental sediments and basalt to the east.
Workings: Surface placer mine workings have been noted here (West, 1948) but their success in recovering gold is uncertain.
Age: Quaternary
Commodities (Major) - Au ?, radioactive minerals
Development Status: Undetermined.
Deposit Model: Placer Au-PGE (Cox and Singer, 1986; model 39a)
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Native Gold ? Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold ? | 1.AA.05 | Au |
List of minerals for each chemical element
| Au | Gold | |
|---|---|---|
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | BN090 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Brooks-Seward DomainDomain
- Nome ComplexAccretionary Complex
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