Unnamed Occurrence (ARDF - MM045; divide between Myrtle Creek and upper Caribou Creek), Kantishna Mining District, Denali Borough, Alaska, USAi
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Latitude & Longitude (WGS84):
63° 36' 14'' North , 150° 39' 7'' West
Latitude & Longitude (decimal):
Köppen climate type:
The occurrence is in Denali National Park and Preserve.
Location: This occurrence is at an elevation of about 4150 feet in a saddle on an unnamed ridge between Spruce Peak and Kankone Peak. It is on the divide between Caribou and Myrtle Creeks, in the NE1/4 NE1/4 section 21, T. 15 S., R. 16 W., Fairbanks Meridian. The location is accurate within 500 feet. The occurrence corresponds approximately to sample location 273 of Hawley and Associates (1978), and to occurrence 93 of Thornsberry, McKee, and Salisbury (1984).
Geology: The country rock in the area of this occurrence is metafelsite of the lower Paleozoic Spruce Creek sequence (Bundtzen, 1981). The Spruce Creek rocks are in a downfaulted block about 3/4 mile wide that trends about NNE. The block is juxtaposed against Precambrian Birch Creek Schist (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2). The occurrence consists of galena- and probably arsenopyrite-bearing quartz float, presumably from a thin, poorly-exposed, vein. A galena-rich sample assayed 0.93 ounce of gold per ton, 112.4 ounces of silver per ton, 33 percent lead, 2.65 percent arsenic, 0.12 percent copper, 0.265 percent zinc, and 0.435 percent antimony. Soil from a saddle near the vein is anomalous in lead, zinc, and silver (Hawley and Associates, 1978, sample number 273).
Workings: The vein was discovered in 1983 (Thornsberry, McKee, and Salisbury, 1984).
Age: The deposit is assumed to be Eocene (see record MM091).
Commodities (Major) - Ag, Au, Pb; (Minor) - As, Cu, Sb, Zn
Development Status: None
Deposit Model: Polymetallic vein (Cox and Singer, 1986; model 22c).
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
4 valid minerals.
Detailed Mineral List:
| ⓘ Arsenopyrite ? Formula: FeAsS |
| ⓘ Galena Formula: PbS |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite ? | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Pyrite | FeS2 |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS - Alaska: | MM045 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- North America PlatformPassive Margin
- Yukon-Tanana lower DomainDomain
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