Porcupine River; Old Rampart Occurrence, Sheenjek Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Porcupine River; Old Rampart Occurrence | Occurrence |
| Sheenjek Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
67° 9' 0'' North , 141° 41' 23'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
See MAS/MILS Sequence # 0020330002 (USBM, 1995)
Location: Located along west bank of Porcupine River opposite mouth of Salmon Trout River, near Old Rampart; locality recorded here is from Cobb (1972) and locality 15 of Barker and Clautice (1978, p. 14), which varies slightly from Barker (1978, 1981); located to within 3000 ft (914 m).
Geology: Nickeliferous alum collected from a seep on the bank of Porcupine River. May indicate high Ni content in nearby gabbro/diorite or Middle Devonian sedimentary rocks. Rock samples of iron stained limestone and shales have anomalous copper (up to 500 ppm), lead (500 ppm), and zinc (2000 ppm), as well as vanadium and nickel (Barker, 1981, p. 50, no. 4; Barker and Clautice, 1978, p. 19, no. 15).
Commodities (Major) - Ni; (Minor) - Cu, Pb, V, Zn
Development Status: No
Deposit Model: Seep
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.List of minerals for each chemical element
Other Databases
| Link to USGS - Alaska: | CO001 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Cordillera Front and ThrustOrogenic Belt
- Kandik basinBasin
- Porcupine DomainDomain
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