Jack Creek Prospect, Kodiak Mining District, Kodiak Island Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Jack Creek Prospect | Prospect |
| Kodiak Mining District | Mining District |
| Kodiak Island Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
57° 9' 36'' North , 153° 14' 23'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Old Harbor | 221 (2017) | 6.2km |
Mindat Locality ID:
198190
Long-form identifier:
mindat:1:2:198190:5
GUID (UUID V4):
d057268c-6014-451d-ba18-643cddf3d417
Site is located on land conveyed to the Koniag Corporation.
Location: This prospect is located on northwest Sitkalidak Island approximately 2 miles south of the head of Amee Bay. Site location is accurate to within 1 mile.
Geology: This prospect consists of a shear zone containing thin seams of chalcopyrite and of several narrow veins containing chalcopyrite and pyrrhotite, all of which cut Cretaceous metasedimentary rock . The shear zone is approximately 20 feet in width. Two samples of the shear zone taken by Saunders (1952, PE 131-6, PE 131-8) assayed 1.36 percent copper over 7.5 feet and 1.26 percent copper over 6.3 feet. A narrow vein striking N. 5 E. and dipping 60 W contained 1.24 percent copper over 0.7 feet and 0.87 percent copper over 0.5 feet. Another vein striking N. 20 E. and dipping 85 W assayed 1.69 percent copper over 2.2 feet and 4.10 percent copper over 1.5 feet.
Workings: A cross-cut was driven on the shear zone in 1951 or 1952. Assays of the shear range from 1.26 to 1.36 percent copper over 6.3 and 7.5 feet. Assays of the veins range from 0.87 to 4.10 percent copper over 0.5 and 1.5 feet.
Age: Cretaceous or younger
Commodities (Major) - Cu
Development Status: None
Deposit Model: Copper-bearing shear zone and veinlets.
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.
Detailed Mineral List:
| ⓘ Bornite Formula: Cu5FeS4 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | KD031 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainDomain
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References
