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Tjosevig Prospect, Nizina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Tjosevig Prospect | Prospect |
| Nizina Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 29' 52'' North , 142° 46' 29'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: This prospect is on the east valley wall of McCarthy Creek on the north flank of Green Butte. It is at an elevation of about 3,600 feet, 2,400 feet west of elevation 5720 near the northwest corner of section 30, T. 4 S., R. 15 E. of the Copper River Meridian. The prospect is shown as quarry symbol on the McCarthy B-5 quadrangle (1994 edition). This is locality 88 of MacKevett (1976) and it is accurately located. Cobb and MacKevett (1980) included this prospect under the name 'Tjosevig'.
Geology: The deposit at this prospect consists of malachite and azurite that forms thin films and veinlets along fractures in the lower part of the Triassic Chitistone Limestone (Miller, 1946; MacKevett, 1976). Eight claims were patented in 1928 and the deposits were explored by a short adit that was caved near the portal by 1943 (Miller, 1946). Copper mineralization is widespread in Chitistone Limestone and is thought to have accompanied regional deformation and low-grade metamorphism in the Late Jurassic to Early Cretaceous (MacKevett and others, 1997).
Workings: Eight claims were patented in 1928 and the deposits were explored by a short adit that was caved near the portal by 1943 (Miller, 1946).
Age: Cretaceous? Copper mineralization is widespread in Chitistone Limestone 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; (Minor) - Ag?
Development Status: None
Deposit Model: Kennecott-type copper deposit (after MacKevett and others, 1997)
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsGallery:
List of minerals arranged by Strunz 10th Edition classification
| 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 |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS - Alaska: | MC132 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Wrangell MountainsMountain Range
North America PlateTectonic Plate
- Wrangellia DomainVolcanic Arc
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