Unnamed Occurrences (ARDF - CR027), Black Bear Lake, Prince of Wales Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
55° 31' 5'' North , 132° 52' 50'' West
Latitude & Longitude (decimal):
Type:
Group of Occurrences
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Klawock | 765 (2017) | 14.0km |
| Hollis | 112 (2011) | 16.0km |
| Craig | 1,248 (2017) | 17.5km |
| Thorne Bay | 483 (2017) | 29.4km |
| Hydaburg | 391 (2017) | 34.7km |
The land in the vicinity of these occurrences has been identified for possible selection by the Sealaska Corporation.
Location: This record describes several occurrences in an area about a mile square that covers the S1/2 section 24 and N1/2 section 25, T. 73 S., R. 82 E. The site is plotted at about the center of the area, about 0.8 mile northeast of peak 3332.
Geology: Hedderly-Smith (1999 [Inventory]) describes several mineral occurrences in a mile-square area marked by widespread geochemical anomalies. The rocks in the area consist of metamorphosed volcanic and sedimentary rocks of the Luck Creek Breccia of Silurian or Ordovician age that have been intruded by several quartz monzonite sills and dikes. The rocks may form the roof of a buried qranodiorite-quartz monzonite intrusion. They commonly are fractured, cut by quartz-pyrite veinlets, and have disseminated pyrite. A float sample of a 3-inch-wide piece of quartz-pyrite vein contained 4,551 parts per million (ppm) copper, 903 ppm lead, 50 ppm arsenic, 39 ppm bismuth, 50.8 ppm silver, 1.535 ppm gold, and 324 ppm antimony. A sample from a steeply-dipping, 3-foot-thick pyrite-pyrrhotite vein contained 4,102 ppm copper, 890 ppm zinc, and 2.1 ppm silver.
Age: Related to a nearby or buried Cretaceous granitic pluton.
Commodities (Major) - Ag, Au, Cu, Pb, Zn; (Minor) - As, Bi, Sb
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 | |||
|---|---|---|---|
| ⓘ | 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 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
Other Databases
| Link to USGS - Alaska: | CR027 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
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