Kake occurrence, Kupreanof Island, Petersburg Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Kake occurrence | Occurrence |
| Kupreanof Island | Island |
| Petersburg Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
56° 59' 20'' North , 133° 57' 50'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Kake | 570 (2017) | 1.8km |
Other/historical names associated with this locality:
ARDF - PE078
This occurrence is on lands that belong to the Kake Village Corporation.
Location: This occurrence is in a rock pit about a mile northwest of the town of Kake. It is about 0.5 mile, west-northwest of the center of section 27, T. 56 S., T. 72 E. The location is accurate.
Geology: This occurrence was found in a reconnaissance of logging roads on northwest Kupreanof Island by Still and others (2002) during a Bureau of Land Management mineral assessment. The occurrence consists of two or three calcite veins with pyrite, sphalerite, and chalcopyrite in siliceous argillite. The veins are about 1 inch thick and extend for about 20 feet where they are cut off by a fault. The rocks in the area consist of argillite and graywacke of the Mississippian and Devonian Cannery Formation and Mesozoic phyllite and slate (Brew and other, 1984). A representative sample of the veins contained 1,135 parts per billion gold, 30.5 parts per million (ppm) silver, 7,327 ppm copper, and 5.4 percent zinc.
Workings: Only limited sampling by government geologists.
Age: Mississippian or younger based on the age of the host rocks.
Commodities (Major) - Ag, Au, Cu, Zn
Development Status: None
Deposit Model: Thin calcite veins with pyrite, sphalerite, and chalcopyrite.
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:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| 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 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
Other Databases
| Link to USGS - Alaska: | PE078 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
USA
- Alaska
- Petersburg Borough
- Kupreanof Mining DistrictMining District
- ⭔Wrangell-Petersburg Census AreaBorough
- Petersburg Borough
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