Unnamed Prospect (ARDF - MC076; west side of Donoho Peak), Nizina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Prospect (ARDF - MC076; west side of Donoho Peak) | - 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° 33' 33'' North , 142° 58' 44'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
202234
Long-form identifier:
mindat:1:2:202234:8
GUID (UUID V4):
de2a27a7-3f9e-4765-be8d-17d315a9d06d
The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: This prospect is on the south end of the ridge between Kennicott and Root Glaciers (MacKevett, 1972). It is at an elevation of about 5,400 feet, 1,500 feet northwest of Donoho Peak (elevation 6696) and 4,500 feet east of Kennicott Glacier. This is locality 115 of MacKevett (1976). It is accurate to within a few hundred feet.
Geology: This prospect consists of sparsely distributed secondary copper minerals and chalcocite that are localized along a fault (MacKevett, 1976). The prospect which is explored by a short adit is in Triassic Chitistone Limestone near the contact with underlying Triassic Nikolai Greenstone (MacKevett, 1972).
Workings: The prospect was explored by a short adit.
Age: Cretaceous? The widespread deposition of copper in Triassic greenstone and limestone of the area is thought to have accompanied regional deformation and low-grade metamorphism in the Late Jurassic or Early Cretaceous (MacKevett and others, 1997). Copper-bearing minerals were deposited in the underlying Nikolai Greenstone at about 112 Ma (Silberman and others, 1980).
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
3 valid minerals.
Detailed Mineral List:
| ⓘ Azurite ? Formula: Cu3(CO3)2(OH)2 |
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Azurite ? | 5.BA.05 | Cu3(CO3)2(OH)2 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| S | Sulfur | |
| S | ⓘ Chalcocite | Cu2S |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS - Alaska: | MC076 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Wrangell MountainsMountain Range
North America PlateTectonic Plate
- Wrangellia DomainDomain
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References
