The Department of Geology presents a seminar by tenure track candidate, Dr. Sanda Botis, entitled "Structural Defects in Minerals: When Spectroscopy & Computational Modeling become tools for Mineral Exploration".

Dr. Botis will present her talk on Friday, May 17 at 10:30 a.m. in CB 3031.

Abstract: Radiation-induced defects (RIDs) in quartz and their associated luminescence properties have long been proposed as potential tools for mineral exploration, but until recently there has been little success in implementing the idea as a reliable exploration technique. Athabasca Basin of Northern Saskatchewan is home to several high grade uranium deposits, which transformed the region into a natural laboratory for the study of long-term effects of radiation on minerals.

Several spectroscopy and imaging techniques have been used to understand the impact of natural irradiation on quartz and to discriminate between defects produced by alpha, beta or gamma irradiation. Additionally, computational modeling has been used as a complementary aid in deciphering the experimental findings by distinguishing between structurally similar defect centers.

A number of radiation-induced defects associated with alpha-particle irradiation have been identified in quartz (Botis et al., 2005, 2006, 2008) and their use as exploration tools was assessed in several uranium deposits (Cigar Lake, Key Lake and McArthur River) and barren occurrences in the Athabasca Basin.

The results show that a better understanding of radiation-induced defects in quartz can be a powerful exploration tool. Alpha-particle-induced defects in quartz can provide information on uranium mineralization and remobilization and can trace the ancient pathways of uranium-rich fluids.

It is the purpose of this talk to give an overview of the experimental and computational methods used in the study of radiation-induced defects in quartz, to highlight important questions remaining about RIDs in quartz and other minerals (e.g., feldspars and calcite) as a direction for future studies, and, moreover, to discuss the potential applications of RIDs in minerals as new tools for exploration of mineral deposits (e.g., Archean lode gold deposits).

Ethical Issues of Abortion: The problem that won't go away

Abortion is currently entering the public arena for discussion again, and as a Centre for Health Care Ethics we have a responsibility to aid the community in a rational discussion of the issues. This is an opportunity for discussion of various ethical considerations.

Presenter:
Tom Koch, PhD, Author, Researcher, and Educator; Adjunct Professor, University of British Columbia

Panel:
Tina Armstrong, MSW, Director, Aboriginal Affairs, Northern Ontario School of Medicine
Alexandra Calnan, BA, BEd, Thunder Bay Students for Life
M. Louisa Pedri, MA, Centre for Health Care Ethics, Lakehead University

Facilitator:
Jerome Harvey, MD, CCFP, Centre for Health Care Ethics, Lakehead University

Certificate of Continuing Professional Education available.

The Department of Geology presents aseminar by:

Dr. Sanda Botis
Postdoctoral Fellow
Dept. of Earth & Environmental Sciences, University of Michigan

Candidate for the Tenure Track Mineralogist/EconomicGeologist Position

Structural Defects in Minerals
When Spectroscopy and Computational Modeling become tools for Mineral Exploration

Please see link below for poster:
http://flash.lakeheadu.ca/~pnhollin/Botis.pdf


FRIDAY, MAY 17, 2013
Time: 10:30 am
Rm: CB 3031

Radiation-induced defects (RIDs) in quartz and their associated luminescence properties have long been proposed as potential tools for mineral exploration, but until recently there has been little success in implementing the idea as a reliable exploration technique.

Athabasca Basin of Northern Saskatchewan is home to several high grade uranium deposits, which transformed the region into a natural laboratory for the study of long-term effects of radiation on minerals. Several spectroscopy and imaging techniques have been used to understand the impact of natural irradiation on quartz and to discriminate between defects produced by alpha, beta or gamma irradiation.

Additionally, computational modeling has been used as a complementary aid in deciphering the experimental findings by distinguishing between structurally similar defect centers. A number of radiation-induced defects associated with alpha-particle irradiation have been identified in quartz (Botis et al., 2005, 2006, 2008) and their use as exploration tools was assessed in several uranium deposits (Cigar Lake, Key Lake and McArthur River) and barren occurrences in the Athabasca Basin. The results show that a better understanding of radiation-induced defects in quartz can be a powerful exploration tool. Alpha-particle-induced defects in quartz can provide information on uranium mineralization and remobilization and can trace the ancient pathways of uranium-rich fluids.

It is the purpose of this talk to give an overview of the experimental and computational methods used in the study of radiationinduced defects in quartz, to highlight important questions remaining about RIDs in quartz and other minerals (e.g., feldspars and calcite) as a direction for future studies, and, moreover, to discuss the potential applications of RIDs in minerals as new tools for exploration of mineral deposits (e.g., Archean lode gold deposits).

The Department of History in collaboration with the Canadian International Council is pleased to host Dr. Salimah Valiani, Associate Researcher with the Centre for the Study of Education and Work at the University of Toronto, who will speak on "Unequal Exchange: The Realities of International Nurse Migration."

This event is co-sponsored by the Lakehead University Gender Issues Centre and Multicultural Centre.

Dr. Salimah Valiani is Associate Researcher with the Centre for the Study of Education and Work at the University of Toronto, and Economist of the Ontario Nurses’ Association, the largest nurses’ union in Canada.

With an academic background in world historical political economy, her research specializations are in the areas of international labour migration, caring labour, economic development, and world inequality. Since 2001, she has worked with non-governmental organizations and unions in Canada, Indonesia, the Philippines, India, and South Africa.

She is the author of the research monograph, Rethinking Unequal Exchange: the global integration of nursing labour markets (University of Toronto Press), a range of academic and policy papers, and two collections of poetry. In June 2012 she was awarded the Feminist Economics Rhonda Williams Prize â€" an award recognizing feminist scholarship and activism in the spirit of the African American economist and activist, Rhonda Williams.

• Tuesday, August 20 - Aquatic ecosystem function in urbanizing environments: Degraded systems or valuable ecosystem service providers? presented by Dr. Andrea Kirkwood, Department of Biology, University of Ontario Institute of Technology

• Tuesday, July 23 - Documentary Screening: People of a Feather Followed by discussion
• Tuesday, August 20 - Aquatic ecosystem function in urbanizing environments: Degraded systems or valuable ecosystem service providers? presented by Dr. Andrea Kirkwood, Department of Biology, University of Ontario Institute of Technology

• Tuesday, June 18 - Biodiversity and Culture in Ontario's Land Between, presented by Leora Berman, Managing Director, The Land Between
• Tuesday, July 23 - Documentary Screening: People of a Feather Followed by discussion
• Tuesday, August 20 - Aquatic ecosystem function in urbanizing environments: Degraded systems or valuable ecosystem service providers? presented by Dr. Andrea Kirkwood, Department of Biology, University of Ontario Institute of Technology

• Tuesday, May 21 - Resilience in the Lake Simcoe Watershed, presented by Seanna Davidson, University of Waterloo, Department of Environment and Resource Studies
• Tuesday, June 18 - Biodiversity and Culture in Ontario's Land Between, presented by Leora Berman, Managing Director, The Land Between
• Tuesday, July 23 - Documentary Screening: People of a Feather Followed by discussion
• Tuesday, August 20 - Aquatic ecosystem function in urbanizing environments: Degraded systems or valuable ecosystem service providers? presented by Dr. Andrea Kirkwood, Department of Biology, University of Ontario Institute of Technology

Student Accessibility Services invites all staff, faculty and students to participate in Global Accessibility Awareness Day and attend our Assistive Technology Open House on Thursday, May 9, 2013 between 11 am and 1 pm.

Participate in this hands-on experience to familiarize yourself with text to speech software, voice-to-text software and organizational software that is available on the Lakehead University campus.

For more information please contact Nancy Cahill at 343-8087 or email atech-sas@lakeheadu.ca.

Date: Thursday, May 9, 2013
Time: 11 am -1 pm
Location: SC0009