Unnamed Occurrence (ARDF - LH006; near Swift River), McGrath Mining District, Bethel Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - LH006; near Swift River) | - not defined - |
| McGrath Mining District | Mining District |
| Bethel Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
61° 32' 49'' North , 154° 13' 22'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
200998
Long-form identifier:
mindat:1:2:200998:1
GUID (UUID V4):
d279e737-4361-4aba-aeeb-259257b5dbc3
Location: This occurrence is in a small cirque valley at the head of an unnamed east tributary to the Swift River. It is at elevation of 4,200 feet, 0.5 mile east of peak 5848. The map site is in the SW1/4 section 20, T 17 N, R 27 W, of the Seward Meridian. This is locality 1 of Cobb (1972 [MF 412]; 1976 [OF 76-485]). The location is probably accurate to within a quarter of a mile.
Geology: Reed and Anderson (1969) reported that biotite granite of the Tired Pup pluton contains abundant accessory allanite and monazite and (or) xenotime. The Tired Pup pluton is a Lower Tertiary pluton of the Alaska-Aleution Range batholith (Reed and Lanphere, 1973).
Workings: Reconnaissance sampling has been completed in this area.
Age: Early Tertiary. Several K-Ar ages from the Tired Pup pluton are about 55 to 60 Ma (Reed and Lanphere, 1973).
Commodities (Major) - REE
Development Status: None
Deposit Model: Disseminated accessory minerals in granite
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:
| ⓘ 'Allanite Group' Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| ⓘ 'Monazite' Formula: REE(PO4) |
| ⓘ Xenotime-(Y) Formula: Y(PO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 8 - Phosphates, Arsenates and Vanadates | |||
|---|---|---|---|
| ⓘ | Xenotime-(Y) | 8.AD.35 | Y(PO4) |
| Unclassified | |||
| ⓘ | 'Monazite' | - | REE(PO4) |
| ⓘ | 'Allanite Group' | - | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| O | Oxygen | |
| O | ⓘ Monazite | REE(PO4) |
| O | ⓘ Xenotime-(Y) | Y(PO4) |
| O | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| Si | Silicon | |
| Si | ⓘ Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) |
| P | Phosphorus | |
| P | ⓘ Monazite | REE(PO4) |
| P | ⓘ Xenotime-(Y) | Y(PO4) |
| Y | Yttrium | |
| Y | ⓘ Xenotime-(Y) | Y(PO4) |
Other Databases
| Link to USGS - Alaska: | LH006 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Farewell-McGrath DomainDomain
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References
