Sheep Creek-South Occurrence, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Sheep Creek-South Occurrence | Occurrence |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 19' 1'' North , 153° 47' 31'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: The Sheep Creek-South occurrence is located on the east side of the upper Sheep Creek valley at an elevation of 3,300 feet (1,006 meters) in the NE1/4 sec. 30, T. 26 N., R. 24 W., of the Seward Meridian. The reporter visited the site in 1981.
Geology: At the Sheep Creek occurrence, sphalerite occurs in small lenses along shear zones in dikes near the north side of a small stock that cuts limestone and siltstone of the mid-Silurian Terra Cotta Mountains Sandstone, a formation within the Dillinger subterrane (Bundtzen, Harris, and Gilbert, 1997). According to Reed and Elliott (1968, C 596), selected grab samples contain up to 5.00 percent zinc.
Workings: Only surface sampling data is available from the occurrence. According to Reed and Elliott (1968, C 596), selected grab samples contain up to 5.00 percent zinc.
Alteration: None recognized.
Reserves: None.
Commodities (Major) - Zn; (Minor) - Fe, Pb
Development Status: No
Deposit Model: Polymetallic veins (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:
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | 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 | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
Other Databases
| Link to USGS - Alaska: | MG057 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Farewell-McGrath DomainDomain
- Farewell TerranePassive Margin
USA
- Alaska
- Yukon-Koyukuk Census Area
- McGrath Mining DistrictMining District
- Yukon-Koyukuk Census Area
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