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Unnamed Occurrence (ARDF - SD064; east of Farragut Lake), Petersburg Mining District, Wrangell City and Bourough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - SD064; east of Farragut Lake) | - not defined - |
| Petersburg Mining District | Mining District |
| Wrangell City and Bourough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
57° 17' 11'' North , 132° 48' 50'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Petersburg | 2,948 (2017) | 53.4km |
Location: This occurrence is near the top of peak 5150, which is about 6.0 miles east of the north end of Farragut Lake. It is about 0.3 mile southwest of the center of section 11, T. 53 S., R. 79 E.
Geology: This occurrence consists of bornite in quartz-epidote veinlets in biotite-hornblende quartz diorite, probably of Tertiary or Cretaceous age (Clark and others, 1970 [OF 70-73]). A sample contained 100 parts per million (ppm) copper, 10 ppm silver, and 0.6 ppm gold.
Workings: Only sampling by government geologists.
Age: Veinlets are younger than the quartz-diorite host rock, which is probably of Tertiary or Cretaceous age.
Alteration: Deposit consist of veinlets of quartz and epidote with bornite in quartz diorite.
Commodities (Major) - Ag, Au, Cu
Development Status: None
Deposit Model: Bornite veinlets in quartz diorite.
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 |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 9 - Silicates | |||
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | Oxygen | |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Quartz | SiO2 |
| Al | Aluminium | |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Bornite | Cu5FeS4 |
| Ca | Calcium | |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | Iron | |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
Other Databases
| Link to USGS - Alaska: | SD064 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Coast MountainsMountain Range
North America PlateTectonic Plate
- Coast plutonic complexVolcanic Arc
- Taku DomainDomain
USA
- Alaska
- ⭔Wrangell-Petersburg Census AreaBorough
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