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Kijik Lake (Thompson occurrence), Bristol Bay Mining District, Lake and Peninsula Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Kijik Lake (Thompson occurrence) | Occurrence |
| Bristol Bay Mining District | Mining District |
| Lake and Peninsula Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
60° 20' 24'' North , 154° 22' 48'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Port Alsworth | 159 (2017) | 15.7km |
| Nondalton | 157 (2017) | 48.2km |
Overall, anomaly is weak. This may also be locality 2 of Mackevett and Holloway (1977) which corresponds with the Thompson prospects, 2 and 3, of Cobb (1972). Site is in Lake Clark National Park and Preserve.
Location: Nearly 5.0 km N-NW of Kijik Lake. Locality 17 of Nelson and others (1985) and locality 25 of MacKevett and Holloway (1977). Sec. 18, T3N, R29W, Seward Meridian. Locality accurate within 1.6 km.
Geology: The anomaly occurs in a structural zone where biotitic, chloritic, and strong silicic alterated dacite porphyry and breccia have been mineralized by 1 percent to 3 percent pyrite and traces of chalcopyrite (?) (Nelson and others, 1983; unit Tv). Mineralization spreads out along a NW-SE fault; possible breccia pipe or intrusive plug localized by the NW-SE fault. Analysis of rock sample yielded 5.8 ppm Ag, 180 ppm Cu, and 275 ppm Zn. Potassium-argon ages for this unit (Tv) range from 56.2 to 62.7 m.y. indicating a Tertiary age for these rocks (Eakins and others, 1978).
Workings: Analysis of rock sample yielded 5.8 ppm Ag, 180 ppm Cu, and 275 ppm Zn.
Age: Tertiary or younger; potassium-argon ages for the volcanic rocks range from 56.2 to 62.7 m.y. (Eakins and others, 1978).
Alteration: Biotite, chloritic, and strong silicic alteration of the dacite.
Production: No production
Reserves: No reserves
Commodities (Major) - Cu; (Minor) - Ag, Zn
Development Status: None
Deposit Model: Porphyry Cu ? (Cox and Singer, 1986; model 17 ?)
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.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrite Formula: FeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | LC032 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Peninsular-Tlikakila DomainDomain
- Peninsular TerraneVolcanic Arc
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