Unnamed Occurrence (ARDF - MH183; west of lower Landmark Gap Lake), Delta River Mining District, Valdez-Cordova Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
63° 6' 6'' North , 146° 6' 28'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is at an elevation of 3,500 feet; about one-half mile west of the south end of Landmark Gap Lake. It is at the northwest corner of section 18, T. 21 S., R. 9 E., Fairbanks Meridian. The location is accurate within about 800 feet.
Geology: This prospect is hosted by an Upper Triassic mafic-ultramafic intrusive complex that is comagmatic with the basalt flows of the Nikolai Greenstone (Nokleberg and others, 1991; L. Hulbert, oral communication, 2001). Net-textured to massive pyrrhotite was found in a gabbro sill near the base of the Nikolai Greenstone at this site. There are virtually no base or precious metals associated with the sulfides (L.D. Hulbert, oral communication, 2001).
Workings: This occurrence is on active MAN Resources claims.
Age: Late Triassic, the age of the host rock.
Commodities (Major) - Fe
Development Status: None
Deposit Model: Ni-Cu-PGE in differentiated mafic-ultramafic sill.
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:
| ⓘ Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
Other Databases
| Link to USGS - Alaska: | MH183 |
|---|
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