|Quadrangle map, 1:250,000-scale||DE|
|Quadrangle map, 1:63,360-scale||D-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is near sealevel at the north head of the South Arm of Moira Sound. It is near the mouth of the creek in the NW1/4 section 18, T. 80 S., R. 88 E. The location is accurate.|
Geologic descriptionThe rocks in the area consist of Silurian or Ordovician basaltic to andesitic volcanic rocks of the Descon Formation, and Ordovician granodiorite and diorite (MacKevett, 1963; Gehrels, 1992). Near the prospect, both units are offset by a north-northwest-trending fault. The deposit is in highly fractured, metavolcanic rocks and consists of gold-bearing calcite veins that contain pyrite, chlorite, and secondary iron oxides.
|Geologic map unit||(-132.214645668939, 54.9329582181044)|
|Mineral deposit model||Gold-bearing calcite vein.|
|Age of mineralization||Silurian or Ordovician or younger.|
|Workings or exploration||The only workings are a narrow, 8-foot-long open cut.|
|Indication of production||None|
Cobb, E. H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Dixon Entrance quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-863, 34 p.
Gehrels, G. E., 1992, Geologic map of southern Prince of Wales Island, southeastern Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-2169, 23 p., 1 sheet, scale 1:63,360.
|Reporters||D.J. Grybeck (Applied Geology)|
|Last report date||9/1/2003|