Unnamed Occurrence (ARDF - LC002), Aniak Mining District, Bethel Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - LC002) | - not defined - |
| Aniak Mining District | Mining District |
| Bethel Census Area | Census Area |
| Alaska | State |
| USA | Country |
This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
60° 57' 36'' North , 153° 30' 36'' West
Latitude & Longitude (decimal):
Köppen climate type:
Mindat Locality ID:
202634
Long-form identifier:
mindat:1:2:202634:6
GUID (UUID V4):
ae3d3337-4342-4cf7-9648-1015602a1cdb
Site is in Lake Clark National Park and Preserve.
Location: About 3 km northwest of Telaquana Pass, on a mountain peak surrounded by glaciers. Locality 38 of MacKevett and Holloway (1977). Sec. 15, T. 10 N., R. 24 W., of the Seward Meridian. Location accurate within 1.6 km.
Geology: Skarn deposit; marble interbedded with schist, phyllite, and metamorphosed mafic volcanic rocks in a large roof pendant in granitic rocks (Nelson and others, 1983). Mineralization consists of pyrite, pyrhhotite and minor amounts of chalcopyrite and sphalerite in granitic rocks and in metasedimentary roof pendants (MacKevett and Holloway, 1977). Quite similar to the nearby Glacier Fork occurrence (ARDF number LC008) and another unnamed occurrence (ARDF number LC010). According to Nelson and others (1983, unit MzPzm), some of the metasedimentary rocks may correlate with the Kakhonak Complex of Permian (?), Triassic, and Jurassic age in the Iliamna quadrangle, and some may be graywacke of Jurassic and Cretaceous (?) age that has been metamorphosed by nearby plutonic rocks. Some of the metamorphosed volcanic rocks, especially in roof pendants, are probably part of the volcanic rocks of Tertiary age (Tv). Nelson and others (1983, unit Ti16) describe the granitic rocks as medium-grey, medium-grained biotite-hornblende granodiorite. Potassium-argon dates on biotite and hornblende from one speciman of this unit yielded ages of about 31 to 35 m.y. (Reed and Lanphere,1972; 1973).
Workings: Unknown
Age: The granodiorite that produced the skarn has potassium-argon dates on biotite and hornblende of about 31 to 35 m.y. (Reed and Lanphere,1972; 1973).
Alteration: Unknown
Production: No production
Reserves: No reserves
Commodities (Major) - Cu; (Minor) - Ag, Zn
Development Status: None
Deposit Model: Porphyry Cu or Cu skarn (Cox and Singer, 1986; model 17 or 18b)
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.
Detailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
Other Databases
| Link to USGS - Alaska: | LC002 |
|---|
Other Regions, Features and Areas containing this locality
North America PlateTectonic Plate
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
