Log In
Unnamed Occurrence (ARDF - MM012; between Crooked Creek and Little Caribou Creek), Kantishna Mining District, Denali Borough, Alaska, USAi
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
63° 48' 9'' North , 150° 25' 19'' West
Latitude & Longitude (decimal):
Köppen climate type:
The site is in Denali National Park and Preserve.
Location: This site represents two geologically similar occurences that are about 0.2 mile apart. The western occurrence is at an elevation of about 2250 feet; the eastern occurrence is at an elevation of about 2400 feet. For this record, the location is at an elevation of 2200 feet, about 0.4 mile east of the center of section 10, T. 13 S., R. 15 W., Fairbanks Meridian. The site corresponds to the location of sample numbers 67 and 71 of Hawley and Associates (1978).
Geology: This record describes two occurrences of sulfide-bearing schist, about 0.2 mile apart, in siliceous units of the Devonian or Mississippian Keevy Peak Formation (Bundtzen, 1981). In the area of the occurrences, the strata strike NE, and dip steeply (Hawley and Associates, 1978, fig. 4.1-A(2)). The occurrence at Hawley and Associates' location 67 consists of weakly pyritic siliceous schist. In addition to pyrite, the schist probably contains sphalerite and small amounts of other sulfide minerals. A sample assayed 0.1 ppm gold, 2.4 ppm silver, 215 ppm copper, 95 ppm lead, and 1000 ppm zinc. Hawley and Associates' location 71 is in sulfide-bearing metachert. A sample assayed 4.0 ppm silver, 315 ppm copper, 20 ppm lead, and 520 ppm zinc. The occurrences are stratabound, and may be Devonian or Mississippian, the depositional age of the Keevy Peak Formation.
Workings: The occurrences were sampled during reconnaissance mapping of the area (Hawley and Associates, 1978). There are no workings.
Age: Probably Devonian or Mississippian, the protolith age of the Keevy Peak Formation.
Alteration: Sulfidization of schist and metachert hostrocks.
Commodities (Major) - Zn; (Minor) - Ag, Au, Cu, Pb
Development Status: None
Deposit Model: Stratabound; syngenetic; possibly volcanogenic.
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:
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
Other Databases
| Link to USGS - Alaska: | MM012 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- North America PlatformPassive Margin
- Yukon-Tanana lower DomainDomain
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.
