Unnamed Occurrence (ARDF - WI040; northwest of junction of Pass and Mettenpherg Creeks), Koyukuk Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
67° 23' 51'' North , 152° 48' 50'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is about 4.5 miles east-northeast of the east end of Ernie Lake and about 3 miles northwest of the junction of Pass and Mettenpherg Creeks. The occurrence is at the top of hill 1151 in about the center of section 29, T. 30 N., R. 24 W., of the Fairbanks Meridian. The occurrence is the site of sample 414 in Dillon and others (1981 [AOF 133B]). The location is accurate.
Geology: This occurrence consists of fluorite and cassiterite disseminated in granite-marble migmatite enclosed in fine grained, blastoporphyritic muscovite-granite gneiss (Dillon and others, 1981 [AOF 133B]). A grab sample of the migmatite contained 50 ppm Sn.
Commodities (Major) - Sn; (Minor) - F
Development Status: None
Deposit Model: Sn vein (?) (Cox and Singer, 1986; model 15b)
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Cassiterite Formula: SnO2 |
| ⓘ Fluorite Formula: CaF2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 3 - Halides | |||
|---|---|---|---|
| ⓘ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Cassiterite | SnO2 |
| F | Fluorine | |
| F | ⓘ Fluorite | CaF2 |
| Ca | Calcium | |
| Ca | ⓘ Fluorite | CaF2 |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
Other Databases
| Link to USGS - Alaska: | WI040 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
- Brooks RangeMountain Range
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Brooks Range DomainVolcanic Arc
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