Unnamed Occurrence (ARDF - MH314; west of Powell Gulch), Chistochina Mining District, Southeast Fairbanks Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - MH314; west of Powell Gulch) | - 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° 9' 17'' North , 144° 51' 0'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: The occurrence is on the east-facing slope above upper Powell Gulch at an elevation of about 5,250 feet. It is about 0.2 mile north of the center of section 27, T. 20 S., R. 15 E., Fairbanks Meridian. The occurrence corresponds to locality 26 of Rose (1967). The location is probably accurate within 0.2 mile.
Geology: The rocks that crop out just above this occurrence are pyritized and are mainly andesite of probable Pennsylvanian age. Boulders below the outcrop are mainly composed of hematite, magnetite, pyrite, and chlorite; they are probably nearly in place, but no source was found (Rose, 1967). No sample was analyzed.
Workings: There are no workings at this site.
Age: Uncertain; epigenetic mineralization of Pennsylvanian volcanic rocks.
Alteration: Pyritization; introduction of magnetite, hematite, and chlorite.
Commodities (Minor) - Fe
Development Status: No
Deposit Model: Possibly Fe skarn (Cox and Singer, 1986; model 18d).
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ 'Chlorite Group' |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Pyrite Formula: FeS2 |
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 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS - Alaska: | MH314 |
|---|
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