Meeting/Event Information

Technical Talks: The Minnesota Section of AIPG holds technical talks September through May, generally the first Tuesday of the month. The talks are designed to fulfill 1 Professional Development Hour (PDH). Professional Geologists, as licensed in the State of Minnesota, are required to complete 24 PDHs every biennium licensing period, including 2 PDHs of ethics.  The technical talks feature important subjects of interest to professional geologists.

The cost includes a buffet lunch and is $21 for non-members, $16 for members, and $0 for students when registering in advance.  We have limited same-day registration for $25. 

*During the pandemic, we are webcasting our Technical Talks.  The cost is $10 for non-members and $5 for members. You must register by 11 AM the day of the talk to be sent the login link/information. Students may attend free of charge. Fees go toward supporting the online meeting platform and the Education Fund. Your contribution to the Education Fund helps support many activities, please see our Giving Back page.

As always, non-members and non-geologists are welcome to attend!

American Engineering Testing, Inc.

AIPG MN Feb Meeting - Life-Cycle / Circular Economy Concepts – Potential Applications to Minnesota’s Mineral Resources!

February 02, 2021
11:45 AM - 1:00 PM

MS Teams - details included in registration receipt & emailed before the meeting

Registration for the AIPG MN Section's Tuesday, February 2, 2021 technical talk is now open online!

Meetings are webcast-only for the next few months.

The cost is $10 for non-members and $5 for members when registering before Tuesday, February 2, 2021 at 9:00 AM Central Time. Students may attend free of charge. 

You must register by 9:00 AM Central Time the day of the talk to be sent the login link/information (otherwise check the meeting page). The meeting link information will also be included in your receipt.

As always, non-members and non-geologists are welcome to attend!   

Fees go toward supporting the online meeting platform and the Education Fund. Your contribution to the Education Fund helps support many activities, please see our Giving Back page.


Life-Cycle / Circular Economy Concepts – Potential Applications to Minnesota’s Mineral Resources!

by Dr. George Hudak, PG, PGeo and Dr. Patrick Schoff, Natural Resource Research Institute

Presentation Abstract

With few exceptions, mineral deposits are not considered sustainable as they represent finite quantities of mineral-based resources. Yet, over the past few decades, the concept of sustainable development in the minerals industry has become increasingly important, as society faces new pressures from ever-increasing populations that strive for higher standards of living. At the same time as demand for metals increases in new energy and electronics technologies, as well as in conventional industries, the discovery of large high grade deposits has become increasingly rare, forcing the use of large, lower grade deposits, which also increases waste and environmental disruption. Concurrently, a societal emphasis on minimizing environmental impacts recognizing social and economic justice issues associated with natural resource extraction have become increasingly important to understand and address. A key requirement for sustainable development is a shift from a conventional linear economy – use it once and throw it away – to a circular economy, in which all products are reused, repurposed and/or recycled, such that their components are retained in the resource pool. Changing to a circular economy will require new ways of thinking about mineral resource extraction, such as considering the potential for co-production, developing additional product streams from waste materials, and reutilization of mining infrastructure for other purposes. Such advances will also require new methods for characterization and extraction of lower grade or rare resources, more effective and efficient processing of mineral resources that simultaneously allow growth of the economy and protection of natural resources of the environment, and a focus on corporate social responsibility. This presentation will focus on concepts such as circular economies, life-cycle thinking, and social license, focusing on applications that could increase the sustainability of mineral resources.



George Hudak manages the Geology and Mineral Opportunities Strategic Research Group at the Natural Resources Research Institute (NRRI), an applied research lab that is part of the University of Minnesota system research enterprise. In that role, he guides the overall strategic research plan for this research group and for NRRI’s Minerals and Metallurgy applied research platform.

Hudak is an economic geologist/applied volcanologist with specific expertise in exploration for Precambrian volcanic- and structurally-hosted base- and precious metal mineral deposits and their associated hydrothermal and mineralizing systems. While at the NRRI, he has worked on a wide variety of projects encompassing mineral potential in Minnesota, renewable energy storage, health-related mineralogy, hydrometallurgical processing of critical metals-bearing mineral deposits, and water treatment. Development of higher value products and more efficient utilization of mineral resources have been key components of the research he has contributed to at the NRRI.

Prior to arriving at NRRI in 2009, Hudak spent eleven years as an Assistant/Associate Professor of Geology at the University of Wisconsin Oshkosh  (UWO), where he focused his government- and minerals industry funded research and consulting on volcanic and structurally-associated precious and base metal mineral deposits within Precambrian terranes across North America. This included well known mining camps in the Wabigoon and Wawa-Abitibi terranes of the Superior Province, as well as prospects in the Vermilion District of northeastern Minnesota. He taught a wide variety of courses at UWO, including Introductory Geology, Mineralogy, Lithology, Mineral Deposits, Advanced Mineralogy, Volcanology, and a field course investigating volcanism and hydrothermal alteration at Yellowstone National Park and Craters of the Moon National Monument. Since arriving at NRRI, Hudak has also taught several courses at the University of Minnesota Duluth, including the Precambrian Research Center geology field camp, Mineralogy and Economic Geology. 

Hudak is a Registered Professional Geologist (P.G.) in Minnesota and Wisconsin, and holds a Professional Geoscientist License (P.Geo.) in Ontario. He is a Fellow of the Society of Economic Geologists and also serves as a Mentor for the Society. Hudak currently serves as a Director for the Minnesota Center for Minerals Resource Education (MCMRE).

He received his Bachelor’s, Master’s and Doctoral degrees in Geology from Carleton College, the University of Minnesota Duluth, and the University of Minnesota, respectively.


Patrick Schoff leads the Ecotoxicology Program at the Natural Resource Research Institute, and is a Professor in the Integrated BioSciences graduate program at the University of Minnesota, teaching a two-semester sequence of Integrated Biosystems, as well as courses in Cell, Molecular, and Developmental Biology, Ecotoxicology, and others.

Schoff trained as a developmental biologist and worked on gamete biology and fertilization in humans and a number of domestic and wild species while on staff at the University of Wisconsin and later at NRRI and the University of Minnesota Duluth. The discovery of a group of bizarrely malformed frogs in central Minnesota in the late 1990’s propelled a move to study reproduction and development in natural settings, and stimulated a nascent interest in ecological toxicology. Following advanced training during an NRC Fellowship at the EPA lab in Duluth, this work expanded to include lab and field studies involving various amphibian and fish species, as well ecotoxicological consultation in a number of mineral and mining related projects conducted at NRRI. Work with the NRRI Minerals group on mine-site remediation has led to advanced studies of sustainable development in natural resource-based industries and incorporating life cycle thinking and methods into early project stages.

Schoff holds a BS in Biology from the University of Wisconsin-Stevens Point and a PhD from the University of Wyoming. He has also completed a Postdoctoral Fellowship in Biochemistry at the Institute for Enzyme Research, University of Wisconsin-Madison, and trained in ecotoxicology as a National Research Council Fellow at the EPA Mid-Continent Ecology Division, Duluth, MN.



$5.00 AIPG MN Section Member Ticket

$10.00 Non-Member Ticket

$0.00 Student Ticket