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Rambler; Barlow; Koska Prospect, Bonnifield Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Rambler; Barlow; Koska Prospect | Prospect |
| Bonnifield Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 3' 28'' North , 148° 56' 49'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Healy | 1,021 (2018) | 22.3km |
| Anderson | 265 (2017) | 33.9km |
| McKinley Park | 185 (2014) | 36.2km |
Location: The Rambler prospect is located in the SW1/4SW1/4 sec. 9, T. 10 S., R. 7 W., Fairbanks Meridian. This prospect is on the north side of Cody Creek, a tributary of Moose Creek; it is approximately 2.7 miles west-northwest of the Liberty Bell mine. The prospect is locality 37 of Cobb (9172 [MF 410]).
Geology: Stibnite is found in small, discontinuous, lenticular bodies in black, slaty schist (Joesting, 1942 [ATDM Pamph. 1, p. 12]). Three tunnels were driven on the prospect, one of which was 90 feet long. About two tons of high-grade stibnite was mined and sacked during prospecting, but there is no mention if any ore was shipped (Joesting, 1942 [ATDM Pamph. 1, p. 12]). A sample taken from the site contained 47percent antimony and traces of gold, silver, and lead.
Workings: Three tunnels were driven on the prospect, one of which was 90 feet long (Joesting, 1942 [ATDM Pamph. 1, p. 12]). In 1994, all the workings were caved, and there is little sign of this prospect other than a few, small pieces of rock that contain stibnite near the caved adits (Donald Grybeck, field observations, 1994).
Alteration: The schist is highly oxidized, and the stibnite is weathered light-yellow.
Production: About two tons of high-grade stibnite was mined and sacked during prospecting, but there is no mention of any ore having been shipped (Joesting, 1942 [ATDM Pamph. 1, p. 12]).
Commodities (Major) - Sb; (Minor) - Ag, Pb, Sb
Development Status: Undetermined
Deposit Model: Simple Sb deposit (Cox and Singer, 1986; model 27d)
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
3 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Stibnite | 2.DB.05 | Sb2S3 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Galena | PbS |
| S | ⓘ Stibnite | Sb2S3 |
| Sb | Antimony | |
| Sb | ⓘ Stibnite | Sb2S3 |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS - Alaska: | FB129 |
|---|
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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