Unnamed Occurrence (ARDF - IL024; north of Meadow Lake), Bristol Bay Mining District, Lake and Peninsula Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - IL024; north of Meadow Lake) | - not defined - |
| Bristol Bay Mining District | Mining District |
| Lake and Peninsula Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
59° 39' 21'' North , 154° 3' 32'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
200924
Long-form identifier:
mindat:1:2:200924:0
GUID (UUID V4):
057b87fd-2e50-4ece-bea1-0d0e932f0163
Location: This occurrence is about halfway between Meadow Lake and Pile Bay in the headwaters of a northeast tributary to Upper Copper Lake. It probably is at an elevation of about 1,000 feet in the SW1/4 NW1/4 sec. 16, T. 6 S., R. 28 W., Seward Meridian. The accuracy of the occurrence is uncertain (see Geologic description). The site is location 24 of Detterman and Cobb (1972).
Geology: A Cretaceous or Tertiary granodiorite batholith or large stock intrudes the Triassic Cottonwood Bay Greenstone near this occurrence (Detterman and Reed, 1980). Up to about 5 percent magnetite is disseminated in the greenstone within about 100 to 200 feet of its contact with the granodiorite. The deposit is probably large but low grade (Berg and Cobb, 1967). Location 24 of Detterman and Cobb (1972) appears to be in granodiorite mapped by Detterman and Reed (1980); instead it probably is in Cottonwood Bay Greenstone, somewhat to the east.
Workings: Berg and Cobb (1967) reported that the occurrence had been staked, but there is no report of any workings.
Age: Probably Triassic or younger.
Commodities (Major) - Fe; (Minor) - Ti
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
1 valid mineral.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | Iron | |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Other Databases
| Link to USGS - Alaska: | IL024 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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References
