|Quadrangle map, 1:250,000-scale||IL|
|Quadrangle map, 1:63,360-scale||B-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is at an elevation of about 2,200 feet, about 1.25 miles east-southeast of the summit of Seven Sisters. It is in the NE1/4NW1/4 sec. 8, T. 9 S., R. 29 W., Seward Meridian. The site, which is locality 30 of MacKevett and Holloway (1977), is accurate within about 1 mile.|
This prospect appears to be in a batholith of Jurassic, medium- to coarse-grained quartz diorite, east of an outcrop area of Tertiary basalt and andesite on the Seven Sisters (Detterman and Reed, 1980). The batholith locally contains diorite and granodiorite phases, and includes roof pendants of metamorphic rocks.Lode claims, probably for iron, were staked at this site (U.S. Bureau of Mines, 1973; MacKevett and Holloway, 1977). The deposit probably consists of disseminations and veinlets of magnetite in relatively mafic phases of the batholith.
|Geologic map unit||(-154.205238477375, 59.4157227639308)|
|Age of mineralization||Probably Jurassic.|
|Workings or exploration||Claims were staked at this site during or before 1973 (U.S. Bureau of Mines, 1973). There is no record of any workings.|
|Indication of production||None|
Detterman, R.L., and Reed, B.L., 1980, Stratigraphy, structure, and economic geology of the Iliamna quadrangle, Alaska: U.S. Geological Survey Bulletin 1368-B, 86 p.
MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.
U.S. Bureau of Mines, 1973, Iliamna, Alaska quadrangle maps showing mineral deposit locations, principal minerals, and number and type of claims: U.S. Bureau of Mines Open-File Report 20-73, scale 1:250,000.
|Reporters||C.C. Hawley, Hawley Resource Group, Anchorage, Alaska|
|Last report date||6/9/2003|