Unnamed Occurrence (ARDF - HE107; southwest head of Wood River), Bonnifield Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - HE107; southwest head of Wood River) | - not defined - |
| Bonnifield Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 42' 25'' North , 147° 36' 57'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
200763
Long-form identifier:
mindat:1:2:200763:5
GUID (UUID V4):
2bdf86e9-8842-4adb-8ef6-01a33f0f8566
Location: This occurrence is at an elevationof about 4,700 feet southwest of the head of Wood River. It is approximately 0.4 miles north-northwest of peak 6,445, in the NE1/4 of sec. 18, T. 14 S., R. 1 E., of the Fairbanks Meridian. The location is accurate to within 2000 feet. This is location 16 of Sherwood and others (1976).
Geology: The country rocks in the area of this occurrence are the Devonian Yanert Fork sequence, an intensely deformed, thick, marine sequence dominantly of metasedimentary and metavolcanic rocks. The bulk of sequence is dark-gray to black carbonaceous shale with interbedded lithic sandstone and siltstone (Wilson and others, 1998). The occurrence is in hydrothermally altered gabbroic sills and dikes that cut the metasedimentary rocks. Samples of the altered zones show elevated gold and copper values. One sample contained 0.5 ppm gold (Sherwood and others, 1976).
Age: The gabbroic hostrocks are undated, but may be Triassic.
Alteration: The hydrothermal alteration is not described.
Commodities (Major) - Au; (Minor) - Cu
Development Status: None
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.List of minerals for each chemical element
Other Databases
| Link to USGS - Alaska: | HE107 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Windy-McKinley DomainDomain
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References
