Geological Mapping of the Needleboy Lake – Six Mile Lake Area, Northeastern Minnesota: a Summary of Volcanogenic Massive Sulfide Potential
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Geological Mapping of the Needleboy Lake – Six Mile Lake Area, Northeastern Minnesota: a Summary of Volcanogenic Massive Sulfide Potential
Published Date
2002-09
Publisher
University of Minnesota Duluth
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Technical Report
Abstract
The Needleboy Lake and Six Mile Lake areas has focused on evaluating
the stratigraphic succession, hydrothermal alteration, and synvolcanic and post-volcanic structures
in an effort to better understand the VHMS potential in this region of the Lower Ely Greenstone.
Field mapping in the Needleboy Lake area (performed during August, 2001) investigated all
outcrops within a 100 to 200 meter perimeter of the Lake. A north-south section was also completed
from the north-central shoreline of Five Mile Lake to the western shoreline of Needleboy Lake.
Field mapping in the vicinity of Six Mile Lake (performed August-September, 2002) included three
detailed north-south traverses (Fig. 4). Traverse 1 extended from the northwestern shoreline of
Needleboy Lake to the western shoreline of Six Mile Lake. Traverse 2 extended from the
northeastern shoreline of Needleboy Lake to approximately 200 meters north of Six Mile Lake.
Traverse 3 extended from the southeastern part of Needleboy Lake to approximately 500 meters
northeast of Six Mile Lake. In addition, all outcrops occurring along roads in the study area were
investigated.
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Funded by the Minerals Diversification Plan of the Minnesota Legislature Through the Minerals Coordinating Meeting; the Permanent University Trust Fund; the Department of Geology, University of Wisconsin Oshkosh, 800 Algoma Boulevard, Oshkosh, Wisconsin 54901-8649; and the Natural Resources Research Institute, University of Minnesota Duluth, 5013 Miller Trunk Highway, Duluth, Minnesota 55811-1142.
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Hudak, George J; Heine, John J; Hocker, Stephanie M; Hauck, Steven A. (2002). Geological Mapping of the Needleboy Lake – Six Mile Lake Area, Northeastern Minnesota: a Summary of Volcanogenic Massive Sulfide Potential. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/187083.
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