Unnamed Occurrences (ARDF - DE003), Gold Harbor, Dall Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrences (ARDF - DE003) | - not defined - |
| Gold Harbor | - not defined - |
| Dall Island | Island |
| Ketchikan Mining District | Mining District |
| Prince of Wales-Hyder Census Area | Census Area |
| Alaska | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
54° 55' 31'' North , 133° 0' 54'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Hydaburg | 391 (2017) | 33.6km |
Location: These occurrences are at the head of Gold Harbor where the Bureau of Mines took numerous samples along about a mile of shoreline (Maas and others, 1991). The coordinates are approximately at the center of the sample area, in the NW1/4 section 23, T. 80 S., R. 82 E. The location is accurate.
Geology: A small Cretaceous granitic pluton intrudes pre-Ordovician marble at the head of Gold Harbor. Mass and others (1991) extensively sampled four contact zones of the granite. Two of the contact zones have sulfides. Samples from one zone that contained tennantite assayed up to 4.39 ounces of silver per ton and 0.142 part per million (ppm) gold. The other mineralized zone is hornfels that contains pyrite, molybdenite, and chalcopyrite across a width of 10 to 15 feet. Samples of this zone contained up 431 ppm molybdenum and 0.4 percent copper.
Workings: None; no indication of work beyond sampling along the shoreline by government geologists.
Age: Related to the contact zone of Cretaceous granite.
Alteration: Contact metamorphism of marble adjacent to Cretaceous granite.
Commodities (Major) - Ag, Au, Cu, Mo
Development Status: None
Deposit Model: Sulfides in contact zone of granite.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Molybdenite Formula: MoS2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ 'Tennantite Subgroup' Formula: Cu6(Cu4C2+2)As4S12S |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | 'Tennantite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)As4S12S |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Molybdenite | MoS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
| As | Arsenic | |
| As | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
Other Databases
| Link to USGS - Alaska: | DE003 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
