Unnamed Occurrence (ARDF - MH272; Chistochina River), Chistochina Mining District, Southeast Fairbanks Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - MH272; Chistochina River) | - not defined - |
| Chistochina Mining District | Mining District |
| Southeast Fairbanks Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 11' 11'' North , 145° 0' 21'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
201298
Long-form identifier:
mindat:1:2:201298:1
GUID (UUID V4):
64627893-97fe-4a8e-a85d-d97e2a35d4bd
Location: This occurrence is at an elevation of about 3,750 feet and south of the toe of the glacier at the head of West Fork Chistochina River, in the NE1/4 section 14, T. 20 S., R. 14 E., Fairbanks Meridian. It corresponds to locality 4 in figure 6 of Cobb (1979 [OFR 79-238]), which is the location of panned concentrate sample 41 of Rose (1967).
Geology: The occurrence is for floodplain gravels of the Chistochina River. A panned concentrate contained about 30 percent magnetite, 10 percent pyrite (which may include pyrrhotite and chalcopyrite), and 6 grains of scheelite (Rose, 1967). Two grains of scheelite were found in panned concentrates from two nearby sites.
Workings: No workings.
Age: Holocene.
Commodities (Major) - W; (Minor) - Fe
Development Status: None
Deposit Model: Black-sand placer; scheelite occurs in magnetite-rich placer concentrate.
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.
Detailed Mineral List:
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Scheelite Formula: Ca(WO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Scheelite | Ca(WO4) |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Ca | Calcium | |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Fe | Iron | |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
Other Databases
| Link to USGS - Alaska: | MH272 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Wrangellia DomainDomain
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References
