Unnamed Occurrence (ARDF - MC095; east of lower Nizina Glacier), Nizina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - MC095; east of lower Nizina Glacier) | - not defined - |
| Nizina Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 37' 53'' North , 142° 25' 4'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Mindat Locality ID:
201041
Long-form identifier:
mindat:1:2:201041:3
GUID (UUID V4):
07af18ec-1379-460d-ae0f-f6c4dba6af4f
The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: This occurrence is on the east valley wall of lower Nizina Glacier (MacKevett, 1970 [GQ 844]). It is at an elevation of about 2,800 feet, 800 feet southeast of hill 3018 in the southeast corner of section 1, T. 3 S., R. 16 E. of the Copper River Meridian. This is locality 114 of MacKevett (1976); the location is accurate to within about 100 feet.
Geology: This prospect consists of chalcocite- and malachite-bearing quartz-calcite veins as much as 8 inches thick that are localized along faults in Triassic Nikolai Greenstone (MacKevett, 1970 [GQ 844]). The veins can be traced for up to 50 feet. They occur near a major fault juxtaposing Nikolai Greenstone against Permian Hasen Creek Formation (MacKevett, 1970 [GQ 844]). Copper mineralization is common in Nikolai Greenstone and is thought to have accompanied regional deformation and low-grade metamorphism in the Late Jurassic to Early Cretaceous (MacKevett and others, 1997).
Age: Cretaceous? Copper mineralization is common in Nikolai Greenstone and is thought to have accompanied regional deformation and low-grade metamorphism in the Late Jurassic to Early Cretaceous (MacKevett and others, 1997).
Alteration: Oxidation.
Commodities (Major) - Cu
Development Status: None
Deposit Model: Basaltic Cu (Cox and Singer, 1986; model 23)
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
4 valid minerals.
Detailed Mineral List:
| β Calcite Formula: CaCO3 |
| β Chalcocite Formula: Cu2S |
| β Malachite Formula: Cu2(CO3)(OH)2 |
| β Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Chalcocite | 2.BA.05 | Cu2S |
| Group 4 - Oxides and Hydroxides | |||
| β | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | β Calcite | CaCO3 |
| C | β Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | β Calcite | CaCO3 |
| O | β Malachite | Cu2(CO3)(OH)2 |
| O | β Quartz | SiO2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| S | Sulfur | |
| S | β Chalcocite | Cu2S |
| Ca | Calcium | |
| Ca | β Calcite | CaCO3 |
| Cu | Copper | |
| Cu | β Chalcocite | Cu2S |
| Cu | β Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS - Alaska: | MC095 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Wrangellia DomainDomain
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References
