Unnamed Occurrence (ARDF - GU031; near the West Fork of Ahtell Creek), Chistochina Mining District, Valdez-Cordova Census Area, Alaska, USAi
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
62° 50' 23'' North , 144° 6' 35'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Slana | 147 (2011) | 16.6km |
| Mentasta Lake | 112 (2011) | 19.5km |
Additional information can be obtained from Ahtna Minerals in Anchorage, Alaska.
Location: This occurrence is on a minor southwest tributary to the West Fork of Ahtell Creek about 2.3 miles northwest of the junction of Ahtell Creek and its West Fork. It is in the NW1/4, section 9, T. 12 N., R. 7 E., Copper River Meridian. The occurrence is number 3d of WGM Inc. (1980).
Geology: The occurrence is in the contact of the Pennsylvanian to Permian, Ahtell intrusion (Richter, 1966). Stream sediments draining the contact contain 2,000 ppb gold and 450 ppm copper (Richter and Matson, 1968; WGM, 1980). Rock chip samples found in a later follow-up by Homestake Mining Company (Bull, Freeman, and Schneider, 1999) contain more than 1,000 ppm copper and 100 ppb gold. Soils collected in the drainage at about 4,400 foot elevation contain more 500 ppm copper and 100 ppb gold.
Age: Uncertain; probably related to the Pennsylvanian to Permian, Ahtell pluton although there is a Jurassic diorite at the head of the drainage that may be related to this occurrence.
Commodities (Major) - Au, Cu
Development Status: None
Deposit Model: Porphyry Cu-Au(?) (Cox and Singer, 1986; model 20c)
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Chalcopyrite ? Formula: CuFeS2 |
| ⓘ Gold Formula: Au |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| 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 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | GU031 |
|---|
Other Regions, Features and Areas containing this locality
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
