Survey Metadata

Till, Indicator minerals



Till sampling survey, NTS 31 M/5, Lake Timiskaming area, northeastern Ontario, 1997.

Location map

(requires an Internet connection)

Survey Description

In 1997, several shallow trenches were excavated into the Peddie kimberlite, Lake Timiskaming area, northeastern Ontario.  Glacial sediments (including till) were collected overlying, up-ice and down-ice of the Peddie kimberlite.  Samples of weathered and fresh kimberlite were also collected.  The data are published in Geological Survey of Canada Open File 3775.  Two samples from this survey are included in Open File 4262 for comparison with the samples collected in 1999.

Data Description:

Paper report and diskette of digital data (MS Excel, MS Word).

Quantities Analysed:

<0.063, 0.063-0.25, 0.25-0.5, and 0.5 to 2.0 mm fractions by INAA for 35 elements; by XRF for 20elements.  <0.063 mm fraction by ICP-ES after aqua regia for 23 elements.

Geochem Maps Available:


Other Analyses:

Heavy mineral concentrate for kimberlite indicator minerals and gold grains; pebble lithology.

Sampling Procedure

Eleven pits 2-3 m deep were excavated using a backhoe.

Publication History

Index Publication
1 McClenaghan, M.B., Kjarsgaard, B.A., Kjarsgaard, I.M., Paulen, R.C., Stirling, J.A.R. (1999). Mineralogy and geochemistry of the Peddie kimberlite and associated glacial sediments, Lake Timiskaming, Ontario. Geological Survey of Canada, Open File 3775, 190 pages. (more)
2 McClenaghan, M.B., Kjarsgaard, B.A., Kjarsgaard, I.M. (2002). Indicator mineral content and geochemistry of till around the Peddie kimberlite, Lake Timiskaming, Ontario. Geological Survey of Canada, Open File 4262, 140 pages. (more)
3 McClenaghan, M.B., Gauvreau, D., Kjarsgaard, B.A. (2009). Mineral chemistry database for kimberlite, surficial sediments and kimberlite boulders from the Lake Timiskaming and Kirkland Lake kimberlite fields, Ontario and Quebec. Geological Survey of Canada, Open File 5833 (rev. ed.), 1 CD-ROM. (more)
4 McClenaghan, M.B., Kjarsgaard, I.M., Kjarsgaard, B.A. (2017). Reconnaissance-scale till survey in the New Liskeard-Temagami region, Ontario: kimberlite indicator minerals and geochemistry. Geological Survey of Canada, Open File 4086 (rev. ed.), 19 p. (more)

Project History

Index Year Project
1 1997-2005 Lake Timiskaming Kimberlite Project, 1997-2005 (more)

Downloadable Files

Index Description Size (bytes)
Diskette to accompany GSC Open File 3775 ( FileID=323 download)
This ZIP file contains a copy of the data diskette originally released with GSC Open File 3775.

Geographic Extent

Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude
47.44° 47.45° -79.69° -79.68°

The geographic extent of the survey is defined by the following polygons:

  • Covers part of 31M/5 (Cobalt), an area around the Peddie kimberlite, Lake Timiskaming, northeastern Ontario.


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