Unnamed Occurrence (ARDF - DE011), Coning Point, Long Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
54° 50' 46'' North , 132° 38' 42'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Hydaburg | 391 (2017) | 41.8km |
NOTE:The subsurface rights to the land in the vicinity are held by the Sealaska Corporation.
Location: Maas and others (1991) describe this occurrence as a large, sulfide-bearing marble boulder near a rock pit about a mile north-northwest of Coning Point. The source of the boulder has not been found but similar marble is nearby. The boulder is about at the center of section 13, T. 81 S., R. 85 E. Hedderly-Smith (1999) describes a 4-inch-thick quartz-sulfide vein nearby.
Geology: This occurrence consists of a chalcopyrite-, galena-, sphalerite-, and silver-bearing marble boulder (Maas and others, 1991). A sample contained 20.4 parts per million silver, 0.92 percent copper, 0.60 percent lead, and 5.0 percent zinc. The source of the boulder is not known, but Gehrels (1991) maps a large area of pre-Ordovician marble just to the north. Hedderly-Smith (1999) describes a 4-inch-thick quartz-sulfide vein nearby that crosscuts siliceous chlorite schist. Two chip samples contained 1.50 and 0.81 percent copper, 0.84 and 1.90 percent lead, 9.92 and 7.52 percent zinc, 0.92 and 1.79 ounces of silver per ton, and less than 0.002 and 0.006 ounce of gold per ton.
Workings: None, other than sampling by industry and government geologists.
Commodities (Major) - Ag, Cu, Pb, Zn
Development Status: None
Deposit Model: Base metals and silver in pre-Ordovician marble.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ 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 |
| ⓘ | Galena | 2.CD.10 | PbS |
| 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 | ⓘ Galena | PbS |
| S | ⓘ Sphalerite | ZnS |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS - Alaska: | DE011 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
- Queen Charlotte basinBasin
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