Unnamed Occurrence (ARDF - MH142; southwest of West Fork Rainy Creek), Delta River Mining District, Southeast Fairbanks Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
63° 17' 44'' North , 145° 59' 9'' West
Latitude & Longitude (decimal):
Köppen climate type:
The Broxson Gulch cat trail cuts through the area.
Location: This occurrence is at an elevation of about 4,900 feet on a southeast-trending ridge southwest of West Fork Rainy Creek. It is in the NE1/4SE1/4 section 3, T. 19 S., R. 9 E., Fairbanks Meridian. It corresponds to locality S65 in table 2 of Nokleberg and others (1991).
Geology: This occurrence is in Late Triassic gabbro that intrudes the Slana Spur Formation of Pennsylvanian age (Nokleberg and others, 1991). Rock sample 79NK027A contains more than 5,000 parts per million chromium (Nokleberg and others, 1991). Chromite is probably sparsely disseminated in olivine cumulate at the site.
Workings: The occurrence is on active claims of MAN Resources.
Age: Late Triassic.
Commodities (Major) - Cr
Development Status: No
Deposit Model: Chromite disseminated in a layered mafic-ultramafic complex.
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
1 valid mineral.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
Other Databases
| Link to USGS - Alaska: | MH142 |
|---|
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