Unnamed Occurrence (ARDF - HE109; north of lower Yanert Glacier), Bonnifield Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - HE109; north of lower Yanert Glacier) | - not defined - |
| Bonnifield Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 39' 36'' North , 147° 41' 2'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is at an elevation of about 7,000 feet, on a nunatak about 0.5 mile south-southeast of peak 7850. The map site is in the NE1/4 of sec. 35, T. 14 S., R. 1 W., of the Fairbanks Meridian. The location is accurate to within 2,000 feet. This is location 24 of Sherwood and others (1976).
Geology: The general area of this prospect is underlain by the Devonian Yanert Fork sequence which consists of siliceous mudstone, argillite, slate, phyllite, semischist, and impure quartzite, and minor metachert and metavolcanic rocks. The bedded rocks are cut by Triassic(?) sills and dikes (Wilson and others, 1998). The deposit reportedly consists of disseminated chaclopyrite and other sulfides, adjacent to a gabbro sill. Samples contained 2,300 ppm copper and 0.5 ppm gold (Sherwood and others, 1976).
Workings: Surface samples only.
Age: Possibly Late Triassic.
Commodities (Major) - Cu; (Minor) - Au
Development Status: None
Deposit Model: Besshi massive sulfide(?) (Cox and Singer, 1986; model 24b)
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
1 valid mineral.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | HE109 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Farewell ForedeepForedeep Basin
- Windy-McKinley DomainDomain
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