Unnamed Occurrence (ARDF - MH361; east of Slana River), Chistochina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - MH361; east of Slana River) | - not defined - |
| Chistochina Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 3' 7'' North , 144° 17' 13'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Slana | 147 (2011) | 41.7km |
Location: The occurrence is on the west side of a steep ridge about 1.25 miles east of Slana River and 2 miles southwest of Gillett Pass at an elevation of about 4,600 feet. The occurrence is about 0.1 mile west-northwest of the center of section 28, T. 15 N., R. 6 E., Copper River Meridian. The site corresponds to locality 4 of Richter (1967) and locality 34 on figure 6 of Cobb (1979 [OFR 79-238]). The location is accurate within 0.1 mile.
Geology: A piece of chalcocite about 2 inches in diameter was found in talus below an outcrop of Nikolai Greenstone overlain by upper Triassic limestone (Richter and others, 1977). These units were formerly mapped as Slana basalt and Jack limestone by Richter (1967). The area is cut by west-northwest-trending faults and small cross faults. The west-northwest faults are subparallel to the Denali Fault that is about 2 miles north-northeast (Richter, 1967). A stream-sediment sample collected in the drainage below the sample was not anomalous in copper.
Workings: Only limited surface sampling and reconnaissance mapping.
Age: Late Triassic or younger, on the basis of the age of potential host rocks.
Commodities (Major) - Cu
Development Status: None
Deposit Model: Float from a chalcocite vein; possibly a Kennecott-type occurrence or Basaltic
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:
| ⓘ Chalcocite Formula: Cu2S |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcocite | Cu2S |
| Cu | Copper | |
| Cu | ⓘ Chalcocite | Cu2S |
Other Databases
| Link to USGS - Alaska: | MH361 |
|---|
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