Unnamed Occurrence (ARDF - MF010; southeast of upper Finger Glacier), Yakutat Mining District, Hoonah-Angoon Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
58° 30' 36'' North , 137° 3' 0'' West
Latitude & Longitude (decimal):
Köppen climate type:
Chugach terrane. The location is in Glacier Bay National Park and Preserve.
Location: The deposit is probably on the south slope of a 7200-foot mountain about 3.5 miles south-southeast of the peak of Mt. LaPerouse in the NE 1/4, SW 1/4, section 6, T. 39 S., R. 51 E., of the Copper River Meridian. The location is based on a description by Leo Mark-Anthony (1977), but it is uncertain because the description of the site reported in Kimball and others (1978, location 14) does not match Mark-Anthony's elevation or approximate coordinates.
Geology: Based on its reported location, the occurrence is in the central part of the Crillon-LaPerouse layered mafic-ultramafic intrusion of Tertiary age. The occurrences were described as 'lenses of nickel-bearing pyrrhotite in diorite within the mafic intrusion' (Mark-Anthony, 1977; also, communication Leo Mark-Anthony, 1998). A sample collected by Mark-Anthony contained 0.83 percent nickel and 0.18 percent copper. Copper is abundant enough to form a separate phase, probably chalcopyrite.
Workings: Surface exposure of mineralized rock; no workings.
Age: Tertiary.
Reserves: Possible reserves contained in sulfide-bearing lenses as much as 10 feet thick and traceable for 500 feet.
Commodities (Major) - Cu, Ni
Development Status: No
Deposit Model: Lode: Disseminated copper and nickel-bearing minerals in dioritic phase(?) of l
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:
| ⓘ Chalcopyrite ? Formula: CuFeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite ? | 2.CB.10a | CuFeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | MF010 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Chugach DomainAccretionary Complex
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