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UFS welcomes GeoCongress 2025 delegates

02 June 2025 | Story Leonie Bolleurs | Photo Supplied

Dr Martin Clark, chair of the local organising committee, is looking forward to welcoming delegates to the GeoCongress.

In just more than three weeks, the University of the Free State (UFS) will open its doors to delegates attending GeoCongress 2025, hosted in collaboration with the Geological Society of South Africa. From 23 to 27 June 2025, academics, industry professionals, and students will come together on the Bloemfontein Campus to share knowledge, discuss new research, and connect with peers in the geosciences.

This biennial event will feature a dynamic programme of workshops, keynote addresses, and presentations covering a broad range of topics in the field.

Message from the event organisers and UFS leadership

“It is a unique honour to be able to host the national GeoCongress, being responsible for bringing together our partners in industry and academia to share our evolving understanding of the rocks, minerals, and advances in the geosciences and associated disciplines. My view of the GeoCongress stems from my appreciation and understanding of one of South Africa’s most highly regarded geologists, Dr Hans Merensky. Dr Merensky is credited with finding platinum in the Bushveld, diamonds in Namaqualand, and phosphorus and vermiculite in Phalaborwa. However, less remember was Dr Merensky’s ability to coordinate comprehensive investigations of rocks, and his tenacity in exploring across the South African landscape. For this, I believe our theme Embracing Change through Collaboration is apt, since it's through interactions between various sectors that we are best able to handle the challenges of tomorrow,” comments Dr Martin Clark, Senior Lecturer in the UFS Department of Geology and principal investigator of the Merensky Group for Airborne Geological Image Classification (MAGIC) at the Department of Geology.

“The 2025 GeoCongress symbolises the principles of sustainable research and innovation that we advocate for in the Faculty of Natural and Agricultural Sciences and underscores our dedication to the development of interdisciplinary collaboration. Research collaboration through our Green and Complex Research Hubs is consistent with the congress theme of ‘Embracing Change Through Collaboration’. By integrating geoscience research with broader sustainability and technological advancements, we guarantee that our scientific discoveries make a significant contribution to both environmental stewardship and industry," said Prof Paul Oberholster, Dean of the Faculty of Natural and Agricultural Sciences.

Outstanding line-up of attendees

GeoCongress 2025 is set to bring together some of the most influential minds in geoscience, creating a space where leading academics, industry experts, and emerging researchers can exchange ideas and insights. Attendees will have the opportunity to engage with key figures shaping the field, including Prof Glen Nwaila, Director of the Wits Mining Institute and a leading authority in economic geology and geometallurgy at the University of the Witwatersrand; Prof John Carranza, a highly regarded researcher at the UFS; and Sifiso Siwela, Chairperson of the SAMCODES Standards Committee and past president of the Geological Society of South Africa.

Adding to the wealth of expertise, Dr Geoffrey Howarth, Senior Lecturer at the University of Cape Town and Head of the Electron Microprobe Facility, will bring his knowledge in mineral studies, while Prof Susan Webb, Associate Professor of Geophysics at the University of the Witwatersrand and acting co-director of the DSI-NRF Centre of Excellence for Integrated Mineral and Energy Resource Analysis (CIMERA), will share her insights into geophysical research. Dr Hayley Cawthra, specialist scientist at the Council for Geoscience, will contribute her expertise in coastal geology, and Prof Steve McCourt, President of the Geological Society of South Africa and Professor Emeritus at the University of KwaZulu-Natal, will bring his experience in structural geology. The line-up also includes Prof Wolfgang Maier from Cardiff University, whose research on magmatic ore deposits continues to influence the field.

To make the most of your GeoCongress 2025 experience, be sure to take full advantage of the networking opportunities – from informal meet-and-greets to engaging panel discussions. Don't miss the chance to attend hands-on workshops and exciting field excursions. These excursions offer a deeper look into the country’s rich geological history, with opportunities to visit Florisbad, Kimberley, the Beatrix operations in the Goldfields, or the Drakensberg. For more tips on navigating the congress and must-see highlights, visit the GeoCongress 2025 website at https://geocongress2025.org.za/ or contact us at secretariat@geocongress2025.org.za.

GeoCongress 2025 is set to be a landmark event on the geosciences calendar. With the UFS as your host, prepare for an experience that combines academic excellence, innovation, and a collaborative spirit. Welcome to GeoCongress 2025!

News Archive

UFS Physics Research Chair receives more funding

2017-11-20

Prof Hendrik Swart, Senior Researcher Professor in the
Department of Physics at UFS.
Photo: Charl Devenish

A research project into low-energy lighting using phosphor materials for light emitting diodes (LEDs) at the Department of Physics at the University of the Free State (UFS) has received further recognition.

The South African Research Chairs Initiative (SARChi) has awarded further funding for the Research Chair in Solid State Luminescent and Advanced Materials situated in the department. Prof Hendrik Swart, a Senior Research Professor in the Department of Physics, says this means that the Chair will carry on receiving funds from SARChi for another five years. The Initiative also awarded Prof Swart in 2012 for the research, which resulted in funding for equipment and among others, bursaries.

Better light emission in LED’s
The research focuses on better light emission of phosphor powers in LEDs. It is also looking into improving LED displays in flat screens. The research into solar cells has shown that phosphors can also increase their efficiency by increasing the range of light frequencies, which convert into electricity. It also entails that glow-in-the-dark coatings absorb light during the day and emit it at night.

Prof Swart says over the next five years the research will focus on developing and producing devices that emit better light using the substances already developed. “We need to make small devices to see if they are better than those we already have.” In practical terms, it means they want a farmer’s water pump that works with solar energy to work better with less energy input.”

Device that simulates sunlight
Prof Swart says the renewal of the Chair’s funding means the department can now get equipment to enhance its research such as a solar simulator. The solar simulator uses white LEDs whose intensity output and wavelengths can be tuned. The output is measured in number of suns. It enables researchers to work in a laboratory with a device that simulates sunlight.

According to Prof Swart the long-term benefit of the research will result in more environmentally friendly devices which use less energy, are brighter and give a wider viewing field.

About 10 postdoctoral researchers are working on the studies done by the Chair in collaboration with the Council for Scientific and Industrial Research.

The Research Chair Initiative aims to improve the research capacity at public universities to produce high-quality postgraduate students, research and innovative outputs. The criterion for evaluating the department’s Chair includes aspects such as how much development has occurred over the past five years. The assessors look at features such as the number of students the research entity has trained and how many publications the research team has produced.

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