Slope Creek Mine (ARDF - NB001), Chistochina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Slope Creek Mine (ARDF - NB001) | Mine |
| Chistochina Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 47' 16'' North , 143° 59' 27'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Slana | 147 (2011) | 9.1km |
| Mentasta Lake | 112 (2011) | 18.6km |
Mindat Locality ID:
200025
Long-form identifier:
mindat:1:2:200025:4
GUID (UUID V4):
3fe83266-4194-4dcc-bc88-f7cf6c8d7c5f
Location: This placer mine is on Slope Creek, a west tributary to Porcupine Creek. It is at an elevation of about 3,600 feet, about 1.1 miles upstream from Porcupine Creek. It is close to the west boundary of the Nabesna D-6 quadrangle in the SW1/4 of section 30, T. 12 N., R. 8 E. of the Copper River Meridian. This is locality 58 of Richter and others (1975). Slope Creek is not named on the USGS Nabesna D-6 quadrangle (revised 1969) but it is clearly located by Richter (1966) and Richter and Matson (1968). This mine was included by Cobb and Richter (1980) under the name 'Slope Cr.'. The map location is accurate to within a few hundred feet. Note that Richter (1964) identified Slope Creek as Boulder Creek, and Cobb and Richter (1980) note that confusion exists between these two nearby creeks in several early reports. Richter's (1966) location for Slope Creek is followed in this record.
Geology: A small amount of gold was recovered from this placer mine on upper Slope Creek. The gold is fine, rough, and accompanied by wire silver, native copper, a bismuth mineral, and magnetite (Moffit, 1944; 1954). Bedrock in Slope Creek is dominantly andesitic volcanic rocks of the upper Paleozoic Tetelna Volcanics (Richter, 1976) but felsic plutonic rocks of the Ahtell pluton are exposed about 1 mile to the west. The andesitic rocks are cut by an east-west trending fault at the head of Slope Creek (Richter, 1966, figure 2)., Unidentified bismuth mineral
Workings: Small-scale surface placer workings are present.
Age: Holocene.
Production: Production was probably less than 500 ounces (Cobb and Richter, 1980).
Commodities (Major) - Au; (Minor) - Ag, Bi, Cu
Development Status: Yes; small
Deposit Model: 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
4 valid minerals.
Detailed Mineral List:
| ⓘ Copper Formula: Cu |
| ⓘ Gold Formula: Au |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Silver Formula: Ag |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Copper | 1.AA.05 | Cu |
| ⓘ | Gold | 1.AA.05 | Au |
| ⓘ | Silver | 1.AA.05 | Ag |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | Iron | |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Cu | Copper | |
| Cu | ⓘ Copper | Cu |
| Ag | Silver | |
| Ag | ⓘ Silver | Ag |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | NB001 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Wrangellia DomainDomain
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References
