Unnamed Occurrence (ARDF - SI158; Middle Arm Kelp Bay), Chichagof Mining District (Chicagof Mining District), Sitka, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - SI158; Middle Arm Kelp Bay) | - not defined - |
| Chichagof Mining District (Chicagof Mining District) | Mining District |
| Sitka | City Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
57° 19' 54'' North , 134° 59' 38'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Angoon | 456 (2017) | 31.1km |
| Sitka | 8,863 (2017) | 37.0km |
| Tenakee Springs | 133 (2017) | 51.7km |
Mindat Locality ID:
201597
Long-form identifier:
mindat:1:2:201597:5
GUID (UUID V4):
506f4153-eb16-40cb-b450-6b0888c073aa
Location: This occurrence is at an elevation of about 100 feet on the south shore of the Middle Arm of Kelp Bay. The occurrence is 0.2 mile west of the center of sec. 28, T. 52 S., R. 65 E. It is location P-99 of Bittenbender and others (1999), location 62 of Cobb (1972, 1978), and MAS no. 0021140188 (U.S. Bureau of Land Management, 2002). The location is accurate within 0.2 mile.
Geology: The rocks in the vicinity of this occurrence are part of the Jurassic and/or Triassic, Kelp Bay Group which consists of phyllite, quartzite greenschist, greenstone, graywacke, and semischist.( Loney and others, 1975). Loney and others (1963) noted pyrite, chalcopyrite, covellite, and bornite in quartz veins and iron-stained siliceous rocks in this area. Bittenbender and others (1999) sampled a quartz veinlet with minor pyrite and a trace of chalcopyrite. The samples had low metal values; the only elements of note were from less than 5 to 10 parts per billion gold and up to 192 parts per million copper.
Workings: Apparently only limited surface sampling by government geologists.
Age: Triassic or younger based on the age of the host rock.
Development Status: None
Deposit Model: Quartz veins with copper minerals in low-grade metamorphic rocks.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| β Bornite Formula: Cu5FeS4 |
| β Chalcopyrite Formula: CuFeS2 |
| β Covellite Formula: CuS |
| β Pyrite Formula: FeS2 |
| β Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Bornite | 2.BA.15 | Cu5FeS4 |
| β | Covellite | 2.CA.05a | CuS |
| β | Chalcopyrite | 2.CB.10a | CuFeS2 |
| β | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | β Quartz | SiO2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| S | Sulfur | |
| S | β Bornite | Cu5FeS4 |
| S | β Chalcopyrite | CuFeS2 |
| S | β Covellite | CuS |
| S | β Pyrite | FeS2 |
| Fe | Iron | |
| Fe | β Bornite | Cu5FeS4 |
| Fe | β Chalcopyrite | CuFeS2 |
| Fe | β Pyrite | FeS2 |
| Cu | Copper | |
| Cu | β Bornite | Cu5FeS4 |
| Cu | β Chalcopyrite | CuFeS2 |
| Cu | β Covellite | CuS |
Other Databases
| Link to USGS - Alaska: | SI158 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainDomain
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References
