Ellie's Gold Occurrence, McGrath Mining District, Bethel Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Ellie's Gold Occurrence | Occurrence |
| McGrath Mining District | Mining District |
| Bethel Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 6' 3'' North , 153° 27' 39'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: Ellie's Gold occurrence is in a second order stream that flows westerly about 8 kilometers to Post River. It is at an elevation of 3,900 feet (1,189 m) in the NE1/4 sec. 10, T. 23 N., R. 23 W., of the Seward Meridian. The location was determined from the field map plots of E.E. Harris and corresponds to map number 30 in Bundtzen, Harris, and Gilbert (1997).
Geology: The Ellie's Gold occurrence is a concentration of placer gold in a second order stream in the Eocene, Terra Cotta Volcanic field. Abundant black sands - including magnetite - were identified in the panned concentrate collected in the field. Bedrock is shallow and the stream more or less flows on bedrock. Stream gradient is about 200 meters/kilometer; i.e., it is steep. The gold appears as several flat, subangular, pin-sized grains in a black-sand-rich concentrate. The pan concentrate also contained 360 ppm chromium, 220 ppm zinc, and 19.4 percent iron (Bundtzen, Harris, and Gilbert, 1997).
Workings: The placer gold occurrence was found by Ellen E. Harris in 1988, during regional geochemical and geological investigations in the McGrath A-1 quadrangle by the Alaska Division of Geological and Geophysical Surveys (Bundtzen, Harris, and Gilbert, 1997).
Alteration: None.
Reserves: None.
Commodities (Major) - Au; (Minor) - Ag
Development Status: No
Deposit Model: Gold placer (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
1 valid mineral.
Detailed Mineral List:
| ⓘ Native Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
List of minerals for each chemical element
| Au | Gold | |
|---|---|---|
| Au | ⓘ Native Gold | Au |
Other Databases
| Link to USGS - Alaska: | MG081 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Farewell-McGrath DomainDomain
- Farewell TerranePassive Margin
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