Unnamed Occurrence (ARDF - EA114; on ridge between Buckskin and Franklin Creeks), Southeast Fairbanks Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - EA114; on ridge between Buckskin and Franklin Creeks) | - not defined - |
| Southeast Fairbanks Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 10' 37'' North , 141° 54' 21'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is located on the ridge between Buckskin Creek and Franklin Creek, about 3.9 miles west-northwest of the old town of Franklin and about 0.3 mile north of hill 3125. The coordinates are in section 36, T. 8 S., R. 29 E., of the Fairbanks Meridian. The location is accurate.
Geology: The rocks in the vicinity of this occurrence are primarily interlayered Paleozoic amphibolite-facies paragneiss, amphibole-feldspar gneiss, and amphibolite (Werdon and others, 2001). These units have been intruded by small, slightly foliated, Jurassic granitic plutons and dikes and widely-scattered Jurassic biotite clinopyroxenite dikes. The metamorphic rocks adjacent to the granitic intrusions have been hornfelsed and are cut by sparse quartz and limonite veins. An assay of these veins contains 504 ppm zinc. A garnet-quartz skarn with disseminated limonite (pseudomorphs after unknown sulfide) contains 850 ppm zinc (Werdon and others, 2000).
Age: Probably Jurassic.
Alteration: Hornfelsing and calc-silicate alteration of gneiss.
Commodities (Major) - Pb, Zn
Development Status: None
Deposit Model: Zinc skarn.
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.
Detailed Mineral List:
| ⓘ 'Garnet Group' Formula: X3Z2(SiO4)3 |
| ⓘ 'Limonite' |
| ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
Other Databases
| Link to USGS - Alaska: | EA114 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Yukon-TananaVolcanic Arc
- Yukon-Tanana upper DomainDomain
USA
- Alaska
- Fortymile Mining DistrictMining District
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