|Quadrangle map, 1:250,000-scale||RB|
|Quadrangle map, 1:63,360-scale||B-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Granite Creek is not labeled on the USGS Ruby B-5 quadrangle map (1952, minor revisions in 1973), but is probably one of the headwater tributaries of Flint Creek. The coordinates listed above correspond to location 19 of Cobb (1972 [MF405]) and mark the approximate center of the more northerly tributary, in section 24, T. 13 S., R. 17 E. of the Kateel River Meridian The location is accurate within 5 miles.|
Geologic descriptionGranite Creek is underlain by Paleozoic phyllite and quartzite (Puchner and others, 1998). Gold and platinum were mined from the creek during 1924 and possibly other years (Smith, 1926). Platinum is probably a rare constituent of the concentrates (Eberlein and others, 1977).
|Geologic map unit||(-155.420116050488, 64.3479174393918)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary?|
|Workings or exploration||Gold and platinum were mined from the creek during 1924 and possibly other years (Smith, 1926).|
|Indication of production||Yes; small|
Cobb, E.H., 1972, Metallic mineral resources map of the Ruby quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-405, 1 sheet, scale 1:250,000.
Cobb, E.H., and Chapman, R.M., 1981, Mineral occurrences (other than mineral fuels and construction materials) in the Kantishna River and Ruby quadrangles, Alaska: U.S. Geological Survey Open-File Report 81-170, 94 p.
Eberlein, G.D., Chapman, R.M., Foster, H.L., and Gassaway, J.S., 1977, Map and table describing known metalliferous and selected nonmetalliferous mineral deposits in central Alaska: U.S. Geological Survey Open-File Report 77-168-D, 132 p., 1 sheet, scale 1:1,000,000.
Puchner, C.C., Smith, G.M., Flanders, R.W., Crowe, D.E., and McIntyre, S.C., 1998, Bedrock geology of the Ruby-Poorman mining district, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 98-11, 12 p., 3 sheets, scale 1:63,360.
|Reporters||C.E. Cameron (Alaska Division of Geological and Geophysical Surveys)|
|Last report date||3/22/2000|