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Franklin; Ptarmigan; Zimmerman Prospect, Fairbanks Mining District, Fairbanks North Star Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Franklin; Ptarmigan; Zimmerman Prospect | Prospect |
| Fairbanks Mining District | Mining District |
| Fairbanks North Star Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 58' 51'' North , 147° 22' 33'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Fox | 417 (2011) | 11.7km |
| Farmers Loop | 4,853 (2017) | 17.2km |
| Two Rivers | 719 (2011) | 20.0km |
| Badger | 19,482 (2011) | 21.4km |
| Fairbanks | 32,325 (2017) | 22.6km |
Location: The Franklin prospect is located in the SE1/4SE1/4 sec. 20, T. 2 N., R. 2 E., Fairbanks Meridian. This prospect is at the head of Gilmore Creek, about 0.4 mile west of the top of Gilmore Dome. The prospect is included in locality 32 of Cobb (1972 [MF 410]).
Geology: Surface trenches across the Franklin and Ptarmigan claims uncovered several mineralized zones approximately 15 to 20 feet wide that consist of quartz and silicates with scheelite (Chapin, 1919, p. 327). The lode strikes N. 40 E. and dips northwest. This prospect lies on the periphery of a Cretaceous granite and granodiorite that intrudes two units of the Fairbanks Schist that are composed of (1) quartz-muscovite schist, quartzite, and chlorite-quartz schist, and (2) amphibolite, magnetite-rich biotite schist, quartzose schist, and marble (Newberry and others, 1996).
Workings: Surface trenches across the Ptarmigan and Franklin claims uncovered several mineralized zones (Chapin, 1919, p. 327).
Commodities (Major) - W
Development Status: None
Deposit Model: W skarn deposit (Cox and Singer, 1986; model 14a)
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 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
|---|---|---|---|
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Scheelite | Ca(WO4) |
| Ca | Calcium | |
| Ca | ⓘ Scheelite | Ca(WO4) |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
Other Databases
| Link to USGS - Alaska: | FB112 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- North America PlatformPassive Margin
- Yukon-Tanana lower DomainDomain
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