Unnamed Prospect (ARDF - MM086; ridge between Ruby Gulch and the head of Rainy Creek), Kantishna Mining District, Denali Borough, Alaska, USAi
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Latitude & Longitude (WGS84):
63° 33' 27'' North , 150° 48' 7'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
202291
Long-form identifier:
mindat:1:2:202291:1
GUID (UUID V4):
2437e7bc-e809-4b71-b99c-85f972ed9f03
The prospect is in Denali National Park and Preserve.
Location: This prospect is at an elevation of about 3400 feet on the ridge between the heads of Ruby Gulch and Rainy Creek. It is in the north part of the SW1/4 NW1/4 section 2, T. 16 S., R. 17 W., Fairbanks Meridian. The location is accurate within 1000 feet. The prospect corresponds to location 50 of Bundtzen (1981), and occurrence 63 of Thornsberry, McKee, and Salisbury (1984).
Geology: The country rocks in the area of this prospect are chiefly graphitic quartz schist and chloritic phyllite of the lower Paleozoic Spruce Creek sequence (Bundtzen, 1981; Thornsberry, McKee, and Salisbury, 1984, fig. K-2, v. 2, occurrence 63). The deposit consists of pyrite and a small amount of galena in a NE- trending, poorly exposed, quartz vein. Samples of the vein assay up to 0.01 ounce of gold per ton and 0.114 ounce of silver per ton. Lead and antimony are in the 100s of ppm range.
Workings: The vein was prospected by a single pit that may have been covered by subsequent road building (Thornsberry, McKee, and Salisbury, 1984, v. 2).
Age: The deposit is assumed to be Eocene (see record MM091).
Alteration: Silicification of graphitic quartz schist.
Commodities (Major) - Au; (Minor) - Ag, Pb, Sb
Development Status: None
Deposit Model: Weakly auriferous, low-sulfide quartz vein (Cox and Singer, 1986; model 36a).
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
3 valid minerals.
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 |
| 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 | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS - Alaska: | MM086 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
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References
