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Unnamed Occurrence (ARDF - SM001; west of upper Getmuna Creek), Aniak Mining District, Bethel Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - SM001; west of upper Getmuna Creek) | - not defined - |
| Aniak Mining District | Mining District |
| Bethel Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 47' 18'' North , 158° 35' 45'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Crooked Creek | 105 (2016) | 27.0km |
Location: This occurrence is on a north-northeast trending ridge separating the headwaters of Getmuna Creek on the east from tributaries of the Kolmakof River on the west. It is near hill 1666, about 0.4 mile south of the center of section 30, T. 20 N., R. 51 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence consists of quartz-bearing ferricrete breccia in vitreous mafic volcanic flows of the Upper Cretaceous, Horn Mountains volcanic rocks (Bundtzen and others, 1998). The mineralized zone trends north-south for a distance of about 1,100 feet. One grab sample of the ferricrete breccia contained 610 parts per million (ppm) zinc, 210 ppm nickel, 1,000 ppm chromium, 45 ppm cobalt, and 22 ppm bismuth (Bundtzen and others, 1998). The elevated zinc and bismuth values are probably hydrothermal in origin whereas the high chromium, nickel, and cobalt values probably represent background in the mafic-volcanic host rocks.
Workings: Surface sampling was conducted in 1992 by the Alaska Division of Geological and Geophysical Surveys (Bundtzen and others, 1998).
Age: Undated; may be related to the nearby Horn Mountain pluton which has been dated at 68-69 Ma (Bundtzen and others, 1998).
Commodities (Major) - Ni, Zn; (Minor) - Bi, Co, Cr
Development Status: None
Deposit Model: Polymetallic vein (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
1 valid mineral.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
Other Databases
| Link to USGS - Alaska: | SM001 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Angayucham TerraneAccretionary Complex
- Farewell buried DomainDomain
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