Rock Creek Mine (bench placer), Nome Mining District, Nome Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Rock Creek Mine (bench placer) | Mine |
| Nome Mining District | Mining District |
| Nome Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 36' 47'' North , 165° 25' 22'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Nome | 3,806 (2018) | 12.5km |
Location: This locality is a bench placer on the crest of a low knoll locally called Arsenic Hill on the west side of Rock Creek at an elevation of about 230 feet. It is 3,000 feet due east of the Snake River road. The deposit is accurately located in the NW1/4 section 23, T. 10 S., R. 34 W., Kateel River Meridian.
Geology: An elevated alluvial (bench) placer is partly preserved west of Rock Creek on the south part of Arsenic Hill. The base of the channel is at an elevation of about 220 feet, or about 20 feet higher than the base of the alluvium in modern Rock Creek to the east. At the time of the formation of the elevated channel, an ancestral Rock Creek left the modern drainage and flowed southwest and then west-southwest. It can be traced for about 700 feet to a linear swale developed along the Brynteson fault; possibly the channel turned more southerly at that point. The channel ranges from about 100 to 120 feet across. Its southeast limit above Rock Creek was mined hydraulically in a pit that was about 120 feet long. The rest of the channel was developed from a series of at least six shallow shafts, which probably follow the deepest part of the channel. The channel is subparallel to the Arsenic Gulch fault, a strong fault that may have partly controlled the course of the old channel (Kennecott Exploration Company, unpublished data). The fault nearly coincides with the north limit of the channel where it leaves modern Rock Creek. Probably only a small amount of gold was recovered from the area of the shafts. This part of the channel may be the location of the small reserve suitable for dragline mining that was noted by Metcalfe and Tuck (1942).
Workings: The elevated channel was mined hydraulically and from shallow underground workings, probably before 1920.
Age: Pleistocene.
Reserves: A small reserve is probably present.
Commodities (Major) - Au; (Minor) - Ag, W (?)
Development Status: Yes; small
Deposit Model: Alluvial placer Au (Cox and Singer, 1986; model 39a).
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 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Scheelite | Ca(WO4) |
| Ca | Calcium | |
| Ca | ⓘ Scheelite | Ca(WO4) |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | NM210 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Brooks-Seward DomainDomain
- Nome ComplexAccretionary Complex
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