Unnamed Occurrence (ARDF - NB020; lower Boyden Creek), Chisana Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - NB020; lower Boyden Creek) | - not defined - |
| Chisana Mining District | Mining District |
| Valdez-Cordova Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
62° 29' 4'' North , 143° 4' 22'' West
Latitude & Longitude (decimal):
Köppen climate type:
The occurrence is in the Wrangell-St. Elias National Preserve.
Location: This occurrence is on lower Boyden Creek. It is at an elevation of about 3,600 feet. 6,500 feet northwest of peak 5650. The occurrence is about 0.2 mile south of the center of section 7, T. 8 N., R. 13 E. of the Copper River Meridian. This is locality M1 of Lowe and others (1982), locality 9 of Richter and others (1975), and National Park Service locality WRST-9 (unpublished data). Cobb and Richter (1980) included this locality as an 'Unnamed occurrence'. It is located to within a few hundred feet.
Geology: A quartz vein that contains pyrite and chalcopyrite is localized in a shear zone that cuts volcaniclastic rocks (Lowe and others, 1982). The shear zone is associated with a northwest-trending fault that cuts volcanic rocks of the upper Paleozoic Tetelna Volcanics. The fault cuts Tertiary basalt about 700 feet to the southeast of this occurrence (Lowe and others, 1982).
Age: Tertiary? The fault at this locality cuts Tertiary basalt about 700 feet to the southeast (Lowe and others, 1982).
Commodities (Major) - Cu
Development Status: None
Deposit Model: Polymetallic vein (Cox and Singer, 1986; model 22c)
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.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | NB020 |
|---|
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