Lilliwig Creek; Lilling Gulch Mine, Southeast Fairbanks Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Lilliwig Creek; Lilling Gulch Mine | Mine |
| Southeast Fairbanks Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 5' 51'' North , 142° 2' 6'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: Lilliwig Creek is a small tributary of Ingle Creek; it is about 3.5 miles west-northwest of Chicken. The coordinates are at the upper limit of the placer workings, on the boundary of sections 26 and 27, T. 27 N., R. 17 E., of the Copper River Meridian. The location is accurate. This site is locality 74 of Burleigh and Lear (1994), locality 35 of Eberlein and others (1977), and locality 49 of Cobb (1972 [MF-393]). An old name for Lilliwig Creek was Lilling Gulch (Ellsworth, 1910).
Geology: The rocks in the vicinity of Lilliwig Creek are primarily upper Paleozoic greenschist-facies metasedimentary and metavolcanic rocks that have been intruded by granitic rocks that are either related to the Taylor Mountain batholith of Triassic age to the south or the Chicken pluton of Jurassic age that is at the head of the valley to the north (Foster, 1976; Werdon and others, 2001). These units have been cut by numerous high-angle faults. In the lower part of Lilliwig Creek, Tertiary gabbro is overlain by tuffaceous material and sparse shale. Quaternary colluvium and alluvium are present in the lower valley; they consist of gravel and lesser silt and sand overlain by muck. Placer gold mining has exposed Pleistocene mammalian fossils, including mammoth, horse, caribou, and bison (Pinney, 2001). Placer gold has been mined downstream from the Lilliwig Creek lode gold occurrence (EA108), and no placer gold was found above it. Lilliwig Creek was being mined for placer gold as early as 1909(?) and was mined in 1910 as well (Ellsworth, 1910; Ellsworth and Parker, 1911).
Workings: Lilliwig Creek was being mined for placer gold as early as 1909(?) and was mined in 1910 as well (Ellsworth, 1910; Ellsworth and Parker, 1911).
Age: Quaternary.
Commodities (Major) - Au
Development Status: Yes; small
Deposit Model: Placer Au (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: | EA109 |
|---|
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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