Unnamed Occurrence (ARDF - MC203; south of Chitina River), Nizina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - MC203; south of Chitina River) | - not defined - |
| 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 , 142° 14' 31'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201082
Long-form identifier:
mindat:1:2:201082:6
GUID (UUID V4):
bf49eb8e-c4c0-4960-80c2-f88f984a7ca3
The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: This occurrence is in the headwaters of an unnamed tributary to Discovery Creek, a south tributary to the Chitina River. It is at an elevation of about 4,600 feet, 5,500 feet northeast of peak 6455 and 7,500 feet west-southwest of elevation 5816. The site is about 2,800 feet east-southeast of the center of section 5, T. 10 S., R. 18 E. of the Copper River Meridian. This is locality 6 of MacKevett (1976); it is accurate to within about 1,000 feet.
Geology: This occurrence consists of sulfide-bearing quartz veins up to 30 centimeters wide that cut Jurassic quartz monzonite of the Chitina Valley batholith (MacKevett, 1976, 1978). A sample of vein material contained 10 parts per million (ppm) silver, 0.2 ppm gold, 20,000 ppm copper, and 150 ppm molybdenum (MacKevett, 1976). K/Ar dates for the Chitina Valley batholith range from 138 to 146 +/- 4 Ma (MacKevett, 1978).
Workings: Limited surface sampling.
Age: Late Jurassic(?) based on K/Ar dates for the host Chitina Valley batholith which range from 138 to 146 +/- 4 Ma (MacKevett, 1978).
Alteration: Silicification.
Commodities (Major) - Ag, Au, Cu, Mo
Development Status: None
Deposit Model: Polymetallic veins (Cox and Singer, 1986; model 22c)
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.
Detailed Mineral List:
| ⓘ Chalcopyrite ? Formula: CuFeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite ? | 2.CB.10a | CuFeS2 |
| 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 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | MC203 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Wrangellia DomainDomain
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References
