Irish Prospect, Aleutians East Borough, Alaska, USAi
| Regional Level Types | |
|---|---|
| Irish Prospect | Prospect |
| Aleutians East Borough | Borough |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
55° 17' 23'' North , 160° 37' 11'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Sand Point | 1,064 (2017) | 9.3km |
This prospect is located on land patented by, or interim-conveyed to, the Aleut Corporation.
Location: The Irish prospect is at an elevation of about 1,000 feet, and 0.4 mile northwest of the top of hill 2015, in the NE1/4 of sec. 33, T. 56 S., R. 75 W., Seward Meridian. The location is accurate to within 2,500 feet.
Geology: The hostrock at this prospect is propylitically altered andesite of the Eocene to Oligocene Popof volcanic rocks (Wilson and others, 1995). Mineralization occurs in quartz breccia that forms three small, discontinuous zones exposed in a creek bottom (Peterson and others, 1982). The breccia contains as much as 20 percent disseminated pyrite. The zones are three feet wide and have been traced for only 5 feet along strike. Six rock samples contained as much as 0.33 ppm gold, 21 ppm silver, 81 ppm copper, 535 ppm lead, 1,810 ppm zinc, 1,000 ppm or more arsenic, and 1.25 ppm mercury (Peterson and others, 1982).
Workings: In 1982 UNC Teton Exploration Drilling Company mapped and sampled this prospect (Peterson and others, 1982). Rock samples contained as much as 0.33 ppm gold, 21 ppm silver, 81 ppm copper, 535 ppm lead, 1,810 ppm zinc, 1,000 ppm or more arsenic, and 1.25 ppm mercury.
Age: Eocene or younger.
Alteration: The hostrock is propylitically altered.
Commodities (Major) - Ag, Au; (Minor) - As, Cu, Hg, Pb, Zn
Development Status: None
Deposit Model: Epithermal gold vein, Polymetallic vein (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
2 valid minerals.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Quartz | SiO2 |
| Si | Silicon | |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Pyrite | FeS2 |
Other Databases
| Link to USGS - Alaska: | PM052 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
- Chugach DomainAccretionary Complex
- East Aleutian ArcVolcanic Arc
USA
- Alaska
- Alaska Peninsula Mining DistrictMining District
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