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Unnamed Occurrence (ARDF - HE143; adjacent to Cantwell Creek), Bonnifield Mining District, Denali Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - HE143; adjacent to Cantwell Creek) | - not defined - |
| Bonnifield Mining District | Mining District |
| Denali Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
63° 23' 13'' North , 148° 56' 2'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Cantwell | 219 (2011) | 1.0km |
| McKinley Park | 185 (2014) | 38.4km |
| Healy | 1,021 (2018) | 52.3km |
Location: The prospect adjoins the northwest side of Cantwell Creek approximately 1,000 feet upstream from its junction with the Jack River and about 0.6 mile southeast of Cantwell. The site is in sec. 5, T. 18 S., R. 7 W., of the Fairbanks Meridian. The location is accurate to within 1500 feet. This is location 7 of Clark and Cobb (1972).
Geology: The host rocks are a melange of Paleozoic and upper Mesozoic sedimentary rocks. An 8-foot-wide outcrop contains crushed and partially recrystallized rhodochrosite; other manganese minerals are present, but not identified. The deposit is probably localized along strands of the McKinley fault.
Workings: Surface samples contain as much as 33.35% manganese (Berg and Cobb,1967).
Age: Post-Mesozoic.
Commodities (Major) - Mn
Development Status: None
Deposit Model: Epithermal Mn (Cox and Singer, 1986; model 25g)
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
2 valid minerals.
Detailed Mineral List:
| ⓘ Quartz Formula: SiO2 |
| ⓘ Rhodochrosite Formula: MnCO3 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Rhodochrosite | 5.AB.05 | MnCO3 |
List of minerals for each chemical element
| C | Carbon | |
|---|---|---|
| C | ⓘ Rhodochrosite | MnCO3 |
| O | Oxygen | |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rhodochrosite | MnCO3 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| Mn | Manganese | |
| Mn | ⓘ Rhodochrosite | MnCO3 |
Other Databases
| Link to USGS - Alaska: | HE143 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Chulitna-Broad Pass DomainDomain
- Peninsular TerraneVolcanic Arc
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