Unnamed Occurrence (ARDF - SI139; northwest of Sikady Lake), Admiralty Mining District, Hoonah-Angoon Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - SI139; northwest of Sikady Lake) | - not defined - |
| Admiralty Mining District | Mining District |
| Hoonah-Angoon Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
57° 44' 7'' North , 134° 21' 21'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Angoon | 456 (2017) | 29.1km |
The prospect is now within the Wilderness of the Admiralty Island National Monument and is closed to mineral exploration and development.
Location: This occurrence is at an elevation of about 1,000 feet, about 0.9 mile north-northwest of upper Sikady Lake. The occurrence is 0.2 mile south-southwest of the center of sec. 2, T. 48 S., R. 68 E. It is location 69 of Cobb (1972, 1978) and MAS no. 0021140202 (U.S. Bureau of Land Management, 2002). The location probably is accurate within 0.2 mile.
Geology: This occurrence is in an undifferentiated unit of Paleozoic and Mesozoic, low-grade metamorphic rocks (Lathram and others, 1965). The occurrence was first reported by Race and Rose (1967). It consists of fine-grained schist that contains moderate amounts of disseminated pyrrhotite. Several zones within the schist contain an estimated 0.1 percent copper as chalcopyrite.
Workings: Apparently only surface examination by government agencies.
Age: Paleozoic or younger.
Commodities (Major) - Cu
Development Status: None
Deposit Model: Copper in schist.
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | SI139 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Alexander DomainDomain
- Alexander TerraneVolcanic Arc
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