Unnamed Occurrence (ARDF - YA010; south of Nunatak Fiord), Yakutat Mining District, Yakutat, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - YA010; south of Nunatak Fiord) | - not defined - |
| Yakutat Mining District | Mining District |
| Yakutat | City Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
59° 49' 47'' North , 139° 3' 0'' West
Latitude & Longitude (decimal):
Köppen climate type:
MacKevett and Plafker (1970, sample number 67APr-34A) reported 0.08 ppm gold, 200 ppm cobalt, and 300 ppm copper in a grab sample of a quartz vein, chosen as representative of numerous quartz veins found at and near this location. Data on the occurrence are given in Cobb (1979).
Location: The locality is a lode occurrence on The Nunatak south of Nunatak Fiord about 8 miles east of the mouth of the fiord. The occurrence is number 1 of Cobb (1972). The approximate location of the site was estimated from pl. 1 of MacKevett and Plafker (1970).
Geology: Sulfide-bearing quartz veins a few inches wide occur in weakly metamorphosed schist-phyllite of original sedimentary and volcanic origin. The rocks belong to the Yakutat group. A representative sample of quartz vein material collected by MacKevett and Plafker (1970) contained anomalous amounts of gold, cobalt, and copper.
Workings: Outcrop sample.
Age: Tertiary?
Commodities (Major) - Au; (Minor) - Co, Cu
Development Status: Undetermined.
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.
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: | YA010 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America Plate
- Chugach DomainAccretionary Complex
- YakutatOphiolite Complex
Pacific OceanOcean
Pacific PlateTectonic Plate
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