|Quadrangle map, 1:250,000-scale||IL|
|Quadrangle map, 1:63,360-scale||C-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is at an elevation of about 2,100 feet about 2 miles northeast of Williamsport on Iliamna Bay. It is in the NE1/4 SW1/4 sec. 32, T. 5 S., R. 25 W., Seward Meridian. The location is probably accurate within 0.5 mile. It is locality 26 of Detterman and Cobb (1972).|
Geologic descriptionThis prospect is in an area underlain mainly by Lower or Middle Jurassic quartz diorite containing small roof pendants of mafic and ultramafic rocks (Detterman and Reed, 1980). The mafic and ultramafic rocks include gabbro, hornblende gabbro, hornblendite, and pyroxenite. The deposit consists of veins, disseminations, and irregular pods or lenses of magnetite in the mafic and ultramafic rocks. The deposit possibly is large but low grade (Berg and Cobb, 1967).
|Geologic map unit||(-153.577115419623, 59.6964655514197)|
|Mineral deposit model||Magnetite deposit in mafic and ultramafic igneous rocks; possible affinity with Alaska PGE? (Cox and Singer, 1986, model 9?).|
|Mineral deposit model number||9?|
|Age of mineralization||Jurassic.|
|Workings or exploration||Berg and Cobb (1967) reported that the locality had been staked; there is no record of any workings.|
|Indication of production||None|
Additional commentsIn addition to nine Phoenix claims, other claims in this area include the Bell 1-4, Heliport 1-9, D Cross 1-2, Smile 1-7, and Strip 1-3 (McFaul and others, 2000).
Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
Detterman, R.L., and Cobb, E.H., 1972, Metallic mineral resources map of the Iliamna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-364, 1 sheet, scale 1:250,000.
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.
|Reporters||C.C. Hawley, Hawley Resource Group, Anchorage, Alaska|
|Last report date||6/8/2003|