Tweeden Prospect, Southeast Fairbanks Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Tweeden Prospect | Prospect |
| Southeast Fairbanks Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 6' 34'' North , 142° 21' 14'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: The Tweeden prospect is near the mouth of Gold Creek, at the base of the slope on the north side of Gold Creek, approximately one-half mile upstream of the mouth of the creek. It is in the NW1/4 section 19, T. 27 N., R. 16 E., of the Copper River Meridian. The location is accurate within one-half mile. The Tweeden prospect is locality 11 of Cobb (1972 [MF-393]) and locality 58 of Eberlein and others (1977).
Geology: The Tweeden prospect is located near the mouth of Gold Creek, where a cliff of Paleozoic greenstone has quartz veins and stringers oriented along along the cleavage; these veins are iron-stained and contain gold (Porter, 1912). Along the lower 4 miles of Gold Creek, Tertiary or Mesozoic granitic rocks crop out (Foster, 1976). In 1911, development at the Tweeden prospect consisted of excavating a 40-foot tunnel at the base of the cliff (Porter, 1912). Operations were discontinued that year when the owner was unable to recover the gold which was very fine.
Workings: In 1911, development at the Tweeden prospect consisted of excavating a 40-foot tunnel at the base of the cliff (Porter, 1912). Operations were discontinued that year when the owner was unable to recover the gold which was very fine.
Commodities (Major) - Au
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
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: | EA106 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Yukon-TananaVolcanic Arc
- Yukon-Tanana upper DomainDomain
USA
- Alaska
- Fortymile Mining DistrictMining District
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