Unnamed Occurrence (ARDF - SM035; east of upper Bear Creek), Aniak Mining District, Bethel Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - SM035; east of upper Bear 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° 38' 37'' North , 158° 29' 2'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Crooked Creek | 105 (2016) | 31.9km |
Location: This occurrence is on a west-facing slope about 0.5 mile west of hill 1379. It is at an elevation of about 750 feet in the SW1/4 sec. 14, T. 18 N., R. 51 W., of the Seward Meridian. The location is accurate.
Geology: This occurrence consists of a chalcedony-cemented breccia in a flow of fine-grained, dark gray basalt or basaltic andesite (Bundtzen and others, 1998). The breccia contains 1-2 percent, finely disseminated sulfides in both quartz veinlets and in mafic volcanic rock. One grab sample contained 880 parts per billion gold and 200 parts per million chromium (Bundtzen and others, 1998). The elevated chromium probably represent the background of the host rocks.
Workings: Surface sampling was conducted by the Alaska Division of Geological and Geophysical Surveys in 1992 (Bundtzen and others, 1998).
Alteration: Chalcedony.
Commodities (Major) - Au; (Minor) - Cr
Development Status: None
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: | SM035 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Farewell buried DomainDomain
- Koyukuk ArcsVolcanic Arc
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