DNR Open-File Project 385: Geochemical Survey on Public Lands in the International Falls Area, Koochiching County, Minnesota

 

About this project


Map of Sample Locations (click for detail)

The DNR has conducted a geochemical survey on public lands in the International Falls area, Koochiching County, Minnesota.  A total of 110 shallow soil samples were collected in Autumn, 2010 within grids located on or near an accessible fault-bound greenstone terrane that is part of the Archean Superior Province.  These samples were shipped to ALS Chemex for independent analysis of major and trace element concentrations. ALS Chemex provided DNR with a laboratory report on January 20, 2011.

The geochemical sample grids are all located on lands under consideration for inclusion within an upcoming April, 2011 Public Lease Offering by the State of Minnesota.

 

Open-File Report

Display or download the open-file report released on July 3, 2012:

Open-File Report, Project 385: Geochemical Soil Survey in an Archean Granite-Greenstone Terrane, International Falls Area, Koochiching County, Minnesota This is a PDF file. You will need Adobe Acrobat Reader to download it. (8.5 x 11, 125 pages, 31 MB)

Please note: Best results in viewing this report will be obtained by saving the files to a location of your choice and opening with Adobe Reader or Acrobat. Some report information may not display as a result of opening with Acrobat directly from a web browser.

For more information:

Project Leader - Don Elsenheimer, Ph.D
500 Lafayette Road
St. Paul, Minnesota 55155-4045
tel. 651-259-5433
fax 651-296-5939
donald.elsenheimer@state.mn.us

 

Digital Data and Maps

A zip file that includes all of the following files (project385_data020111.zip):

  • PDF file of ALS Chemex laboratory report (project385_als_chemex_labreport.pdf, 98 kb)
  • CSV file with analytical results, provided by ALS Chemex (WN11000670.csv file, 35 kb)
  • A DNR-prepared spreadsheet that links results with the UTM coordinates of each sample location in a gis-compatible format (Feb2011_IntlFalls_A1data.xls, 81 kb)
  • A GIS shapefile and metadata of each sample location with results (p385_soil.shp)
  • Sample location map, depicting the locations of both these new samples, and the sample locations in a 1985 DNR Geochemical Survey Project 242 This is a PDF file. You will need Adobe Acrobat Reader to download it. (11" x 17", 705 kb) 
  • Map displaying gold concentrations in both new 2010 survey and the 1985 survey This is a PDF file. You will need Adobe Acrobat Reader to download it. (11" x 17", 698 kb) 

 

Past Data Release

March 2011

The following presentation is released as a pdf:

  • Presentation: Gold Mineralization Potential in a Wabigoon Subprovince Granite-Greenstone Terrane, International Falls Area, Minnesota" This is a PDF file. You will need Adobe Acrobat Reader to download it. (10" x 7.5 ", 2.5 mb)