Otter Lake Occurrence, Bristol Bay Mining District, Lake and Peninsula Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Otter Lake 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° 28' 47'' North , 153° 47' 24'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
199284
Long-form identifier:
mindat:1:2:199284:0
GUID (UUID V4):
2d4c5cd7-c9d0-45a4-a8b8-bd03a22d8208
Site is in Lake Clark National Park and Preserve.
Location: Locality is on the slope about 650 m NW of Otter Lake. This is locality 14 of Nelson and others (1985) and locality 22 of MacKevett and Holloway (1977). Sec. 35, T. 5 N., R. 26 W., of the Seward Meridian. Locality is accurate to within 1.6 km. Coordinates are for a point in the center of the occurrence. The occurrence is 2.6 km wide and extends 3.2km NE and SW from plotted location.
Geology: West of Otter Lake, chlorite schists contain interbedded argillites, cherts, and recrystallized limestone. The schist contains disseminated chalcopyrite in massive pyrite. Within the Lake Clark schist belt. MacKevett and Holloway (1977) describe the rocks as Paleozoic (?) schists, largely of volcanic derivation; inlcudes both mafic and felsic volcanic schist. Felsic meta-volcanic rocks northeast of Portage Lake (located NW of Otter Lake) are considered to be a favorable host for network type copper-zinc deposit (Resource Associates of Alaska, 1976). Limestone beds are common hosts for mineralization.
Workings: Unknown
Age: Host is Paleozoic ?
Alteration: Unknown
Production: No production
Reserves: No reserves
Commodities (Major) - Cu; (Minor) - Zn
Development Status: None
Deposit Model: Kuroko massive sulfide ? (Cox and Singer, 1986; model 28a ?)
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
3 valid minerals.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | 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 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
Other Databases
| Link to USGS - Alaska: | LC022 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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References
