Unnamed Occurrence (ARDF - NB103; south of lower Baultoff Creek), Chisana Mining District, Southeast Fairbanks Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
62° 4' 22'' North , 141° 4' 19'' West
Latitude & Longitude (decimal):
Köppen climate type:
The occurrence is in the Wrangell-St. Elias National Preserve.
Location: This occurrence is on the east nose of the ridge between lower Baultoff Creek and Gravel Creek. It is near elevation 4119 near the southeast corner of SE1/4 of section 31, T. 4 N., R. 24 E. of the Copper River Meridian. This is locality 9 of Richter and others (1973), locality 56 of Richter and others (1975), and National Park Service locality WRST-82 (unpublished data). Cobb and Richter (1980) included this locality as an 'Unnamed occurrence'. It is located to within a few hundred feet.
Geology: At this occurrence, quartz veins with calcite and minor chalcopyrite cut a small quartz monzonite stock and its volcanic country rocks (Matson and Richter, 1971 [OFR 71-202]; Richter and others, 1975). A grab sample of a quartz-calcite vein contained 7 parts per million (ppm) silver, 15,000 ppm copper, 700 ppm chromium, 150 ppm nickel, 200 ppm zinc, and 300 ppm vanadium (Matson and Richter, 1971 [OFR 71-202]). The diorite stock intrudes upper Paleozoic volcanic rocks and is inferred to be Cretaceous (Richter and others, 1973).
Age: Cretaceous or Tertiary; the diorite stock that hosts the deposit is inferred to be Cretaceous (Richter and others, 1973).
Commodities (Major) - Ag, Cu; (Minor) - Cr, Ni, V, Zn
Development Status: No
Deposit Model: Quartz-calcite veins with chalcopyrite
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 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| Ca | Calcium | |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS - Alaska: | NB103 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Wrangell MountainsMountain Range
North America PlateTectonic Plate
- Wrangellia DomainVolcanic Arc
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