Unnamed Occurrences (ARDF - PE094; on south Fork Andrew Creek), Petersburg Mining District, Wrangell City and Bourough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrences (ARDF - PE094; on south Fork Andrew Creek) | - not defined - |
| Petersburg Mining District | Mining District |
| Wrangell City and Bourough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
56° 34' 6'' North , 132° 6' 14'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Wrangell | 2,382 (2018) | 19.9km |
The area is now within the Stikine-LeConte Wilderness which is closed to mineral exploration and mining.
Location: These occurrences are on the South Fork of Andrew Creek at an elevation of about 1000 feet. They are about 12.6 miles east-northeast of Wrangell near the center of section 23, T. 61 S., R. 85 E.
Geology: During a reconnaissance examination of Andrew Creek, Still and others (2002) found a piece of quartz float with visible gold in the South Fork of Andrew Creek at an elevation of about 1,000 feet. They could not locate the lode source but several other samples of quartz float in the creek contained 137 to 1,992 parts per billion (ppb) gold. They also collected 21 stream-sediment sample and a panned concentrate. The stream sediment samples contained up to 493 ppb gold and the panned concentrate sample contained 1,058 ppb gold. Andrew Creek largely flows on Mesozoic and Paleozoic schist and gneiss that is intruded by Cretaceous tonalite plutons (Brew, 1997; Karl and others, 1999) . These make up the western border zone of the Coast Plutonic Complex. East of Andrew Creek the complex consists largely of Tertiary tonalite and migmatite. (Brew, 1997; Karl and others, 1999).
Workings: Only sampling by government engineers and geologists.
Age: Uncertain because the mineralization was not found in place.
Commodities (Major) - Au
Development Status: None
Deposit Model: Visible gold in quartz float.
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
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | PE094 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Taku DomainDomain
- Yukon-TananaVolcanic Arc
USA
- Alaska
- ⭔Wrangell-Petersburg Census AreaBorough
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