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    Scientific Program


    The Scientific Program will be composed of oral and poster presentations.

    Oral Presentations

    Oral presentations will be divided into plenary and general technical sessions.  The time allotted for plenary papers will be 40 minutes, and 20 minutes for papers in the technical sessions.

    Poster Presentations

    Poster presentations will be on-going throughout the Symposium, including networking sessions during the early evenings of the Monday, Tuesday and Thursday of the Symposium.

    Technical Sessions

    IAGS2021 dedicates the Technical Session “Water and hydrogeochemistry: challenges in exploration, mining and sustainable development” to the Memory of our friend and colleague Dr. David Gray (1961 – 2019)

    Abstracts to IAGS2021 must be submitted to one of the following Technical Sessions.  Please read the description of each one before submitting your abstract.

    1) Exploration geochemistry: present and future challenges

    Chair: Carmina Jorquera, Teck Resources Ltd.

    Description: This thematic session will be focused on, and open to studies related to the use of geochemistry for exploration. It will cover traditional techniques based on stream sediment, soil, rock chip sampling, lithogeochemistry, as well as more innovative techniques oriented to exploration in areas of transported overburden, partial extractions, biogeochemistry, mineral chemistry, hydrogeochemistry and any other novel uses of geochemistry applied to mineral exploration (at any scale). Geochemistry has been a long standing and traditional tool in mining exploration, in which advancing improvements of analytical techniques allow for new and novel opportunities to face the increasing challenges of exploration. Combination of geochemical exploration techniques with any other tools such as geophysics and mineral spectroscopy determinations is encouraged within an integrated geological framework.

    2) New field portable technologies: improving the analysis and turnaround times in exploration

    Chair: Andrew Menzies, Bruker Nano GmbH

    Description: The traditional use of geochemistry and mineralogy in mining exploration has evolved over time together with analytical capabilities, however the application of results has always been dependent on the turnaround time and sample processing capacity of internal or commercial laboratories. Consequently, this can have an impact on the timeous evaluation of exploration projects and can undermine the ability for quick decisions in the field.  The advent and continual development of field portable technologies and their application to direct on-site analytical determinations has provided exploration geologists with a multiplicity of tools to assist quick decision making. This thematic session will focus on data quality and case studies of applications of field portable technologies in mining exploration, such as portable XRF, LIBS, XRD, spectroscopy, and any other on-site field geochemical analytical technologies.

    3) Big data: squeezing multi-element geochemical data by means of data science and self-learning techniques

    Chair: Álvaro Egaña, Universidad de Chile

    Description: The use of multi element geochemistry in the mining industry, coupled with geological, mineral, geophysical and spectroscopy data, from exploration to resource and reserve estimates, and applications of multi element geochemistry to quantitative mineral characterization among many other uses, generates ever increasing amounts of information, in which data processing by Big-data science techniques offers novel and very powerful opportunities to perform data integration, multivariate analysis, data modeling and interpretation. This thematic session will focus on and welcomes studies related to the use of data science, machine learning, statistical learning or deep learning techniques in the mineral industry, with particular attention to those associated with maximizing the use of multi-element geochemical data integrated with other sources of information.

    4) Geochemistry applied to mineral characterization for geological, geometallurgical and resource modeling

    Chair: Brian Townley, Universidad de Chile

    Description: This thematic session is oriented to studies that evaluate the value of multi-element geochemistry as a tool for semi-quantitative to quantitative bulk mineral characterization in geological, resource and geo-metallurgical modeling of ore deposits, applied to the characterization of lithology, hydrothermal / supergene alteration types and intensities, as well as mineralization. This session will be focused on applications that permit numerical classification techniques for mineral characterization in ore deposits which are based on multi-element geochemistry and/or spectroscopy based technologies, allowing for semi-quantitative to quantitative high resolution modeling of key aspects of lithology, hydrothermal alteration and mineralization. It will also offer insights to applications that may be cross-referenced to metallurgical test samples and therefore to geo-metallurgical properties of rocks and predictive modeling.

    5) Environmental geochemistry: closing the gap for sustainable mining and development / Mine Tailing Revalorization (Unesco-IGCP682)

    Chair: Manuel Caraballo, Universidad de Chile

    Description: Increasing awareness and regulations on environmental impacts and mitigation in the mining industry, within the framework of sustainable mining, have placed important emphasis on the necessity of an integral understanding of chemical and physical stability of mine waste as well as the direct environmental impacts of mining operations. This thematic session will focus on the use of geochemistry applied to environmental studies that provide a deep understanding of the behavior and impacts of mining waste products, and hence the necessary knowledge to determine efficient mitigation and control protocols. This session will include a specific special sub-session sponsored by the Unesco-IGCP682 project of mine tailing revalorization, focused on reprocessing of old and present tailing deposits for the recovery of elements / minerals of economic interest, within a framework of circular economy and sustainability. Studies on the applicability of environmental geochemistry to other impacts of the mining industry as well as other studies that provide useful applications to the mining industry are also welcomed.

    6) Water and hydrogeochemistry: challenges in exploration, mining and sustainable development

    Chair: Luciano Achurra, Amphos 21 Consulting Chile

    Description: Hydrogeochemical studies provide us with relevant information about water sources and the processes that affect them surficially and underground. The activities associated with the exploitation of metallic and non-metallic mineral deposits can cause changes in the chemistry of rivers and aquifers. Currently, the infiltration of water from tailings storage facilities and mitigation or remediation of sulfate or metals in aquifers is common. Related to this matter, concepts such as monitoring plans on water quality and mining closure plans, which involve a hydrogeochemical component, can condition the environmental approval of large projects. On the other hand, hydrochemical studies on brines, in the salt flats, are becoming increasingly important due to the growing demand of the lithium-associated energy industry, as well as the use of chemical and isotopic techniques in the exploration of deep geothermal systems. These topics and a general water scarcity have led to the current challenges which are focused on efficient water management and the protection of its chemical quality, which is closely related to its management.

    In the session, discussions related to these issues are welcome through presentations of applied hydrogeochemical techniques in water studies as well as the use of modelling tools which allow for a better understanding of the processes involved in the water cycle and their implications in the environment.

    7) Isotopic geochemistry: new uses in applied geochemistry

    Chair: Verónica Oliveros, Universidad de Concepción

    Description: This session will deal with novel methodological approaches of isotopic geochemistry and geochronology in the fields of natural resources, environmental geology and earth dynamics. Examples of systematics studies and sampling protocols aiming at the discovery of new ore deposits, geochemical anthropic anomalies, paleoclimatic trends or processes and natural risk assessment are welcomed. Applications of new isotopic tools and geochronometers in the Earth Sciences will be also of interest in this session.

    8) Linking geology and geochemistry to viticulture and wine

    Chair: Pamela Castillo, Universidad de Chile

    Description: Climate, soil and agricultural management are the main factors that impact yield and grape quality. Geologic studies are important in viticulture since the physical and chemical properties of soils are strongly influenced by lithological, geochemical and structural characteristic of the soil parent materials. This thematic session welcomes contributions that link diverse areas of geosciences (geology, geochemistry, geomorphology, geophysics, mineralogy, soil sciences, hydrogeology, hydrology, climatology, biogeochemistry, etc.) that influence aspects such as viticultural potential and wine quality, the terroir concept, soil-plant interactions, root system development, water availability, the characterization of viticultural valleys, exploration of new areas apt for viticulture, environmental issues, challenges and impacts of climate change, standardization of methodologies, and technological solutions, among others.

    9) Analytical geochemistry technologies and quality assurance / quality control

    Chair: Cliff Stanley, Acadia University

    Description: Appropriate sampling, sample preparation, analysis, and data quality assessment and control procedures are essential for the proper exploration, evaluation, and exploitation of mineral deposits as well as for environmental assessments, remediation, monitoring, and related applied research designed to improve these activities. This session invites contributions addressing two themes: (i) presentations that improve our understanding of QAQC procedures, that expand/improve the application of QAQC procedures, or illustrate interesting successes or failures in quality control and (ii) presentations that illustrate new analytical technologies or applications that can be used to improve the practice of exploration or environmental geochemistry.

    Presentations accepted for this session will not involve the use of technologies that remain secret or proprietary; as such procedures cannot be fully evaluated in a scientific manner, preventing an objective assessment of their value and use in exploration and environmental geochemistry applications.