Unnamed Occurrence (ARDF - KC147), Blunt Mountain, Annette Island, Ketchikan Mining District, Prince of Wales-Hyder Census Area, Alaska, USAi
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Latitude & Longitude (WGS84):
55° 8' 20'' North , 131° 23' 38'' West
Latitude & Longitude (decimal):
KΓΆppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Metlakatla | 1,405 (2017) | 11.6km |
| Saxman | 417 (2017) | 23.7km |
| Ketchikan | 8,197 (2017) | 27.7km |
Mindat Locality ID:
200984
Long-form identifier:
mindat:1:2:200984:4
GUID (UUID V4):
04a5d8f8-57c2-483c-bffc-ce03373cb123
Location: This occurrence is at an elevation of about 2000 feet on Blunt Mountain, about 0.15 mile east of the summit. The site is in section 3, T. 78 S., R. 93 E., of the Copper River Meridian. It corresponds to loc. 30 in Berg (1972 [I 684]), loc. 144 in Elliott and others (1978), and loc. 40 in Karl (1992). The location is accurate within a few hundred feet.
Geology: The country rock in the area of this site is Silurian trondhjemite that was regionally metamorphosed to greenschist grade in Late Cretaceous time (Berg, 1972). The occurrence is in sericitized trondhjemite, and consists of sparse galena, hematite(?), and pyrite in iron-stained quartz fissure veins and pods up to 10 feet thick.
Age: Fissure veins probably are Late Cretaceous or younger.
Alteration: Sericitization of trondhjemite, and oxidation of iron mineral(s) in veins to hematite(?).
Commodities (Major) - Pb
Development Status: None
Deposit Model: Polymetallic veins (Cox and Singer, 1986; model 22c)
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
4 valid minerals.
Detailed Mineral List:
| β Galena Formula: PbS |
| β Hematite ? Formula: Fe2O3 |
| β Pyrite Formula: FeS2 |
| β Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| β | Galena | 2.CD.10 | PbS |
| β | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| β | Hematite ? | 4.CB.05 | Fe2O3 |
| β | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | β Hematite | Fe2O3 |
| O | β Quartz | SiO2 |
| Si | Silicon | |
| Si | β Quartz | SiO2 |
| S | Sulfur | |
| S | β Galena | PbS |
| S | β Pyrite | FeS2 |
| Fe | Iron | |
| Fe | β Hematite | Fe2O3 |
| Fe | β Pyrite | FeS2 |
| Pb | Lead | |
| Pb | β Galena | PbS |
Other Databases
| Link to USGS - Alaska: | KC147 |
|---|
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References
