Quiggley; Gray Eagle Mine, Nome Mining District, Nome Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Quiggley; Gray Eagle Mine | Mine |
| Nome Mining District | Mining District |
| Nome Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 38' 52'' North , 164° 17' 34'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Location: This locality is on the south side of Big Hurrah Creek, at an elevation of about 250 feet, and 0.6 miles southeast of its mouth. It is locality 17 of Cobb (1972, MF 445; 1978, OF 78-181).
Geology: A lense of stibnite, 12 to 18 inches thick, occurs within a 4-foot-thick quartz vein in a brecciated zone containing disseminated pyrite; the lense strikes northeast and dips northwest. Stibnite occurs in bladed crystals 1 to 3 inches long and as finely disseminated material. Collier and others (1908) report only traces of Au and Ag. Five tons of ore with 63.7% antimony, no lead or zinc, and only traces of arsenic, were mined and 3 tons were shipped in 1915-16 (Mertie, 1918). The host rock is black, very fine-grained, graphitic schist. Bedrock here is part of a lower Paleozoic metasedimentary assemblage (Sainsbury and others, 1972, OFR 511; Till and others, 1986). This deposit may be the same age as some gold-quartz veins of southern Seward Peninsula. The southern Seward Peninsula lode gold deposits formed as a result of mid-Cretaceous metamorphism (Apodoca, 1994; Ford, 1993, Ford and Snee, 1996; Goldfarb and others, 1997) that accompanied regional extension (Miller and Hudson, 1991) and crustal melting (Hudson, 1994). This higher temperature metamorphism was superimposed on high pressure/low temperature metamorphic rocks of the region.
Workings: A 12-foot shaft and several trenches exposed the vein in early workings (Cathcart, 1922).
Age: Cretaceous?
Alteration: Silicification.
Production: Five tons of ore with 63.7% antimony, no lead or zinc, and only traces of arsenic, were mined and 3 tons were shipped in 1915-16 (Mertie, 1918).
Commodities (Major) - Sb; (Minor) - Au ?
Development Status: Yes; small
Deposit Model: Quartz-stibnite vein in graphitic schist; simple Sb deposits (Cox and Singer, 1
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
| ⓘ | 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 | ⓘ Stibnite | Sb2S3 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Sb | Antimony | |
| Sb | ⓘ Stibnite | Sb2S3 |
Other Databases
| Link to USGS - Alaska: | SO019 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Brooks-Seward DomainDomain
- Nome ComplexAccretionary Complex
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