Gold Copper Occurrences, Bingo Mountain, Annette Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
55° 13' 40'' North , 131° 32' 34'' West
Latitude & Longitude (decimal):
Type:
Group of Occurrences
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Saxman | 417 (2017) | 10.6km |
| Metlakatla | 1,405 (2017) | 11.2km |
| Ketchikan | 8,197 (2017) | 14.3km |
Location: This site represents three occurrences in a half-mile-square triangular area southeast of Bingo Mountain. The occurrences are in section 3, T. 77 S., R. 92 E., of the Copper River Meridian, and section 35, T. 76 S., R. 91 E., of the Copper River Meridian. They range in elevation from about 1950 feet near the top of the mountain, to about 400 feet elevation, 0.5 mile east-southeast and south-southeast of the top. The coordinates are for the approximate center of the area of occurrences. The site corresponds to loc. 7 in Karl (1992). The location is accurate within 0.1 mile.
Geology: The country rocks in the area of this site are Upper Jurassic or Cretaceous flyschlike metasedimentary rocks that are gradationally interbedded with andesitic or basaltic metatuff (Berg, 1972 [i 684]; Karl, 1992). The rocks were regionally metamorphosed to greenschist-grade phyllite and semischist in Late Cretaceous time. The occurrences are quartz-calcite-pyrite veins in green tuffaceous phyllite that also contains disseminated minute cubes of pyrite (Karl, 1992, loc. 7). Samples of the sulfide-bearing green phyllite contained up to 0.5 ppm Ag, 300 ppm Cu, and 300 ppm Cr; a sample of a quartz-calcite-pyrite vein contained 0.21 ppm Au (Karl, 1992, loc. 7a-c).
Workings: Samples of the sulfide-bearing green phyllite contained up to 0.5 ppm Ag, 300 ppm Cu, and 300 ppm Cr; a sample of a quartz-calcite-pyrite vein contained 0.21 ppm Au (Karl, 1992, loc. 7a-c).
Age: Probably Late Cretaceous or younger.
Alteration: Pyritization of tuffaceous phyllite country rock.
Commodities (Major) - Au, Cu; (Minor) - Ag
Development Status: None
Deposit Model: Low-sulfide Au-quartz veins (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 | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS - Alaska: | KC164 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
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