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Unnamed Occurrence (ARDF - SD063; near head of North Baird Glacier), Petersburg Mining District, Wrangell City and Bourough, Alaska, USAi
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Latitude & Longitude (WGS84):
57° 19' 42'' North , 132° 45' 18'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is in the saddle between peaks 5919 and 5765, about 5.2 miles east of the east end of Glory Lake. It is 0.3 mile southwest of the center of section 28, T. 52 S., R. 79 E.
Geology: This occurrence consists of bornite that occurs in an aplite dike, in a quartz vein, in a pegmatite dike, and along an epidotized fracture in hornblende-biotite quartz diorite (Clark and others, 1970 [OF 70-73]). The area is largely unmapped but the age of the rocks is probably Tertiary or Cretaceous (Gehrels and Berg, 1992). Samples contained up to 7,000 parts per million (ppm) copper and 30 ppm silver.
Workings: Only surface sampling by government geologists.
Age: Younger than what are probably Tertiary or Cretaceous plutonic rocks.
Alteration: Bornite in thin quartz veins and along epidotized fractures.
Commodities (Major) - Ag, Cu
Development Status: None
Deposit Model: Bornite disseminated in plutonic rocks and along fractures.
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: | SD063 |
|---|
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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