Unnamed Prospect (ARDF - NB052; east fork Bond Creek), Chisana Mining District, Valdez-Cordova Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Prospect (ARDF - NB052; east fork Bond 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° 14' 7'' North , 142° 40' 40'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
202317
Long-form identifier:
mindat:1:2:202317:8
GUID (UUID V4):
3834b97a-b661-421c-a0d1-d4e4d3420ee1
The prospect is in the Wrangell-St. Elias National Preserve.
Location: This prospect is on the south side of the headwaters of the east fork of Bond Creek. It is at an elevation of about 5,600 feet, 1,700 feet south of Bond Creek, and 2 miles northwest of peak 8310. The prospect is about 0.5 mile north-northwest of the center of section 8, T. 5 N., R. 15 E. of the Copper River Meridian. This is locality 19 of Richter (1973), locality 31 of Richter and others (1975), and National Park Service locality WRST-37 (unpublished data). Cobb and Richter (1980) included this prospect under the name 'East Fork'. It is located to within a few hundred feet.
Geology: Quartz-pyrite-molybdenite veins and veinlets cut strongly altered and brecciated trondhjemite. The trondhjemite forms an intrusive stock in other granitic rocks of the mid-Cretaceous Nabesna pluton (Richter, 1973). The deposit is estimated to contain 50 million tons with an average grade of about 0.01 percent molybdenum (Richter and others, 1975).
Workings: The prospect has been explored since 1967.
Age: Mid-Cretaceous. The intrusive host rocks are part of the Nabesna pluton. K/Ar ages for the Nabesna pluton range from 105 +/- 4.0 to 114 +/- 3.4 Ma (Richter, Lanphere, and Matson, 1975). Many varieties of probably Tertiary hornblende-plagioclase porphyry form irregular intrusive bodies in the Nabesna pluton and other regional bedrock units in the area (Richter, 1973).
Alteration: The host rocks to this deposit are highly altered but the type and extent of alteration have not been reported. The area is iron-stained.
Reserves: The deposit is estimated to contain 50 million tons with an average grade of about 0.01 percent molybdenum (Richter and others, 1975).
Commodities (Major) - Mo
Development Status: None
Deposit Model: Porphyry Mo, Low-F (Cox and Singer, 1986; model 21b)
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 | |||
|---|---|---|---|
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| ⓘ | 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 | ⓘ Molybdenite | MoS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
Other Databases
| Link to USGS - Alaska: | NB052 |
|---|
Other Regions, Features and Areas containing this locality
North America
- Wrangell MountainsMountain Range
North America PlateTectonic Plate
- Wrangellia DomainDomain
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References
