Howard Street Robinson Lecture Tour


The Howard Street Robinson Medal recognizes a respected and well-spoken geoscientist who will further the scientific study of Precambrian Geology and/or Metal Mining through a presentation of a distinguished lecture across Canada. The medal is named in honour of Howard Street Robinson, a founding member of the GAC whose bequest to GAC in 1977 of approximately $100,000 makes the lecture tour possible. The bequest was ”for the furtherance of scientific study of Precambrian Geology and Metal Mining”. Thus the GAC’s Mineral Deposits Division awards the medal in odd years, and the Precambrian Division awards it in even years. The lecturer is nominated and chosen by the Howard Street Robinson Medal Committee.

The 2023 In-Person Lecture Tours are underway!


02 November 2023, 12:00 pm (MDT), University of Alberta (Edmonton)

30 November 2023, 2:30pm (PST), Simon Fraser University (Burnaby)

SFU presentation will be available on Zoom. Information on how to join can be requested by contacting

16 January 2024, 11:30pm (PST), UBC Okanagan (Kelowna)

29 January 2024, 12:30pm (EST), Université du Québec à Chicoutimi (Chicoutimi)

31 January 2024, 18:00pm (EST), Université Laval (Québec City)

01 February 2024, 12:30pm (EST), Polytechnique Montréal (Montréal)

02 February 2024, 11:00am (EST), UQAM and McGill joint seminar (Montréal)

13 February 2024, 3:30pm (CST), University of Saskatchewan (Saskatoon)

14 February 2024, 3:30pm (CST), University of Saskatchewan (Saskatoon)

15 February 2024, Time TBD, Saskatchewan Geological Survey, Saskatoon Chapter, Luncheon Talk (Regina)

15 February 2024, Time TBD, University of Regina (Regina)

26 February 2024, Time TBD, University of New Brunswick (Fredericton)

27 February 2024, 1:30pm (AST), St. Francis Xavier University (Antigonish)

28 February 2024, 4:00pm (AST), Acadia University (Wolfville)

29 February 2024, 11:30am (AST), St. Mary’s University (Halifax)

01 March 2024, 4:00pm (AST), Dalhousie University (Halifax)

07 March 2024, 11:30am (EST), 3120 Herzberg Building at Carleton University (Ottawa)

18 March 2024, 11:40am (CST), Brandon University (Brandon)

19 March 2024, 13:00pm (CST), University of Manitoba (Winnipeg)

University of Manitoba talk will be available on Zoom by request to

28 March 2024, Time TBD, Memorial University (St. John’s)



Lecture Title: “Fundamentals of Mineral Resource Estimation”

Mr. Garth Kirkham, P.Geo., FGC, SEGF, FCIM (Principal, Kirkham Geosystems Ltd.)

Abstract: The significant components of resource estimation pertains to data management, data analysis, geological interpretation and modelling, geostatistics, quality assurance/quality control, change of support, block model interpolation, resource estimation and reporting. This lecture will focus on data compilation and integration, data analysis, creation of ore body models and estimating methodologies along with software systems for mineral resources. In addition, a review of common pitfalls, do’s and don’ts along with examples of good and bad practice will be discussed. The following are some of the outcomes that will be touched upon:

  • Develop an understanding of the terminology, concepts and methodologies related to mineral resource estimation.
  • Assess datasets such as drillhole collars, surveys, assays, lithologies, topography, specific gravities, and the importance as the basis for reliability and confidence.
  • Basic statistical analysis and understand the implications of analytical results.
  • What are geologically realistic models used to constrain mineral resource estimations and develop an understanding of limitations.
  • Assess data quality and certainty based on factors including drill hole spacing, data vintages, lithological control and variability.
  • Discuss the merits of resource estimation methodologies and techniques.