Good Enough Prospect, Chistochina Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Good Enough Prospect | Prospect |
| Chistochina Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 46' 18'' North , 143° 56' 20'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Mindat Locality ID:
197753
Long-form identifier:
mindat:1:2:197753:3
GUID (UUID V4):
e2bd1d9b-91b5-4208-be3d-66f653e1a9c6
The locality is in the Wrangell-Saint Elias National Park and Preserve.
Location: This prospect is on a small unnamed north tributary to the upper Kluvesna River. It is at an elevation of about 4,000 feet, 5,100 feet east-southeast of Scotty Peak, and 2,000 feet west of Fall Creek. The site is about 1,600 feet north of the center of section 22, T. 1 S., R. 8 E. of the Copper River Meridian. This is locality 180 of MacKevett (1976); the location is accurate to within about 1,000 feet. Cobb and MacKevett (1980) included this prospect under the name 'Good Enough'.
Geology: The deposit at this prospect consists of chalcocite with minor native copper, cuprite, malachite, and azurite that occur in veins, amygdule fillings, and replacements of Triassic Nikolai Greenstone (Moffit and Mertie, 1923, p. 112-113; MacKevett, 1976). Calcite and quartz commonly accompany the copper mineralization. Strong fracturing and faulting of the Nikolai Greenstone localized some veins. The deposits were explored with two short adits. 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).
Workings: The deposits were explored with two short adits.
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: Low-grade calcite, quartz, and epidote(?) veining and replacement of greenstone. 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
7 valid minerals.
Detailed Mineral List:
| β Azurite Formula: Cu3(CO3)2(OH)2 |
| β Calcite Formula: CaCO3 |
| β Chalcocite Formula: Cu2S |
| β Copper Formula: Cu |
| β Cuprite Formula: Cu2O |
| β Malachite Formula: Cu2(CO3)(OH)2 |
| β Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| β | Copper | 1.AA.05 | Cu |
| Group 2 - Sulphides and Sulfosalts | |||
| β | Chalcocite | 2.BA.05 | Cu2S |
| Group 4 - Oxides and Hydroxides | |||
| β | Cuprite | 4.AA.10 | Cu2O |
| β | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| β | Calcite | 5.AB.05 | CaCO3 |
| β | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| β | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Azurite | Cu3(CO3)2(OH)2 |
| H | β Malachite | Cu2(CO3)(OH)2 |
| C | Carbon | |
| C | β Azurite | Cu3(CO3)2(OH)2 |
| C | β Calcite | CaCO3 |
| C | β Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | β Azurite | Cu3(CO3)2(OH)2 |
| O | β Calcite | CaCO3 |
| O | β Cuprite | Cu2O |
| 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 Azurite | Cu3(CO3)2(OH)2 |
| Cu | β Chalcocite | Cu2S |
| Cu | β Cuprite | Cu2O |
| Cu | β Copper | Cu |
| Cu | β Malachite | Cu2(CO3)(OH)2 |
Other Databases
| Link to USGS - Alaska: | MC004 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Wrangell MountainsMountain Range
North America PlateTectonic Plate
- Wrangellia DomainDomain
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References
