Koktuli River; Koktalee; Kakhtul Occurrences, Bristol Bay Mining District, Lake and Peninsula Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Koktuli River; Koktalee; Kakhtul Occurrences | Group of Occurrences |
| Bristol Bay Mining District | Mining District |
| Lake and Peninsula Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
59° 52' 50'' North , 155° 50' 31'' West
Latitude & Longitude (decimal):
Type:
Group of Occurrences
Köppen climate type:
Location: This site represents unspecified occurrences of placer gold along the length of the Koktuli River in the Iliamna D-8 and D-7 quadrangles. For this record, it is about at the midpoint of the river in the D-8 quadrangle, near the east end of the boundary between sections 29 and 32, T. 3 S., R. 38 W., Seward Meridian. The occurrences were previously reported by Cobb and Reed (1981 [OFR 81-1343A, B]).
Geology: According to Martin and Katz (1912, p. 133), prospectors reported that all the river bars along the Koktuli River (then spelled Kakhtul or Koktalee) contain flour gold. The main fork of the Koktuli drains the central part of the Cretaceous plutonic complex that contains the Pebble Copper (IL007) and other copper, gold, and iron deposits (IL002-006) in the Iliamna D-7 quadrangle, and an unnamed north fork of the river drains the north part of the complex. The placer gold was probably derived from the erosion of the plutonic complex.
Workings: Apparently only exploration or prospecting by panning.
Age: Holocene.
Production: None known; possibly small amounts of gold were recovered in prospecting.
Commodities (Major) - Au
Development Status: Undetermined.
Deposit Model: Placer gold (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: | IL001 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Peninsular-Tlikakila DomainDomain
- Peninsular TerraneVolcanic Arc
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