|Quadrangle map, 1:250,000-scale||CR|
|Quadrangle map, 1:63,360-scale||A-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The only description of this prospect is by Brooks (1902). The location is shown on figure 18 of Wright and Wright (1908), but they did not describe it. It is near, if not the same as, a prospect described by Maas and others (1995) under the name 'Paul Lake south.' The site is about 0.2 mile south of Paul Lake in about the center of section 1, T. 78 S., R. 88 E.|
Geologic descriptionAs described by Brooks (1902), the deposit on the Wednesday claim is a vein about 3 feet thick in a schist layer in marble. The vein consists mainly of calcite; it strikes N50E and dips 45-60S, and is cut by several faults. It is exposed in a small cut. The metals of interest were not mentioned by Brooks, but he implied that the vein is gold-bearing. A sample collected near this site by Maas and others (1995) contained 6,463 parts per million copper. The rocks in the Dolomi area are part of the Wales Group of Late Proterozoic and Cambrian age (Herreid, 1967). They are folded into a large dome centered over the eastern third of Paul Lake, and consist of several marble layers 200 to 1300 feet thick, interbedded with calcareous chlorite schist and marble.
|Geologic map unit||(-132.085256143912, 55.1368343901466)|
|Mineral deposit model||Gold-calcite vein.|
|Age of mineralization||The vein is younger than the Late Proterozoic or Cambrian host rocks.|
|Workings or exploration||Only a small cut.|
|Indication of production||None|
Brooks, A.H., 1902, Preliminary report on the Ketchikan mining district, Alaska, with an introductory sketch of the geology of southeastern Alaska: U.S. Geological Survey Professional Paper 1, 120 p.
Herreid, Gordon, 1967, Geology and mineral deposits of the Dolomi area, Prince of Wales Island, Alaska: Alaska Division of Mines and Minerals Geologic Report 27, 17 p.
Maas, K.M., Bittenbender, P E., and Still, J.C., 1995, Mineral investigations in the Ketchikan mining district, southeastern Alaska: U.S. Bureau of Mines Open-File Report 11-95, 606 p.
|Reporters||D.J. Grybeck (Applied Geology)|
|Last report date||5/1/2004|