Steeple Point Occurrence, Aleutian Islands Mining District, Aleutians West Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Steeple Point Occurrence | Occurrence |
| Aleutian Islands Mining District | Mining District |
| Aleutians West Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
53° 16' 12'' North , 168° 19' 12'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Mindat Locality ID:
200150
Long-form identifier:
mindat:1:2:200150:3
GUID (UUID V4):
12f359aa-243c-4b26-bc67-6ed2ccc33143
This site is on land conveyed, patented, or selected by the Aleut Native Corporation.
Location: This site is at an elevation of about 1000 feet approximately 1 mile east-southeast of Steeple Point. Site location is accurate to within 1 mile. Ellis and Randolph (1989) named this the Steeple Point prospect.
Geology: This geothermal site is described by Randolph and Ellis (1989) as being similar to ARDF number UK005. The rocks consist of waterlain tuffs and lahars of Quaternary age. The site contains numerous fumaroles and hot-springs and is marked by a 7,000 by 4,000 foot color anomaly. It consists of acid-leached rocks and localized silica stockworks. Some of the fumarolic centers display strong silicification and pyritization. Hot-spring centers also exhibit silicification and calcedonic breccias. Combined metal values from 55 rock samples obtained here and at ARDF number UK005 are up to >2000 ppm arsenic, 115 ppb gold, >5 ppp mercury, 11 ppm molybdenum, and 4.4 ppm silver (Randolph and Ellis, 1989).
Workings: Battle Mountain Exploration examined and sampled this site in 1989 (Randolph and Ellis, 1989).
Age: Quaternary.
Alteration: The rocks at this site exhibit silicification, argillization, acid leaching, and pyritization.
Commodities (Major) - Ag, Au; (Minor) - As, Hg
Development Status: None
Deposit Model: Hot-springs Au-Ag (Cox and Singer, 1986, model 25a)
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 | |||
|---|---|---|---|
| ⓘ | Gold | 1.AA.05 | Au |
| 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 |
| Au | Gold | |
| Au | ⓘ Gold | Au |
Other Databases
| Link to USGS - Alaska: | UK011 |
|---|
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References
