|Quadrangle map, 1:250,000-scale||LC|
|Quadrangle map, 1:63,360-scale||B-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Occurrence is about 5.8 km west of the mouth of Portage Creek, in Sec. 15, T. 3 N., R. 28 W., of the Seward Meridian. Accurate within 1,600 meters.|
Only indication of occurrence is report by U.S. Bureau of Mines (1995) as an asbestos deposit.The bedrock in the vicinity of the occurrence is Tertiary volcanic rocks. The rocks of this unit include: rhyolitic breccia, ash-flow tuff, flows, and intrusive rocks and subordinate mafic to intermediate flows (Nelson and others, 1983; unit Tv). Potassium-argon ages for this unit (Tv) range from 56.2 to 62.7 m.y. indicating a Tertiary age for these rocks (Eakins and others, 1978).
|Geologic map unit||(-154.11222003436, 60.3493368062269)|
|Mineral deposit model||Unknown|
|Age of mineralization||Tertiary or younger; potassium-argon ages for this unit (Tv) range from 56.2 to 62.7 m.y. (Eakins and others, 1978).|
|Alteration of deposit||Unknown|
|Workings or exploration||Unknown|
|Indication of production||None|
|Reserve estimates||No reserves|
|Production notes||No production|
Additional commentsMAS/MILS sequence number 0020930010 (Bureau of Mines, 1995). Site is in Lake Clark National Park and Preserve.
Eakins, G.R., Gilbert W.G., and Buntzen, T.K., 1978, Preliminary bedrock geology and mineral resource potential of west-central Lake Clark quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Open-File Report 118, 15 p., 2 plates, scale 1:25,000.
Nelson, W.H., Carlson, C., and Case, J.E., 1983, Geologic map of the Lake Clark quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1114-A, 1 sheet, scale 1:250,000.
U.S. Bureau of Mines, 1995, Spatial data extracted from the Minerals Availability System/Minerals Industry Location System (MAS/MILS): U.S. Bureau of Mines Special Publication 12-95, CD-ROM.
|Reporters||D.P. Bickerstaff (USGS)|
|Last report date||6/15/1998|