We are Structural-Economic Geologists with extensive field-based experience in high grade terranes

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TECT is affiliated with the following professional organizations

– South African Council for Natural Scientific Professions (Member)

– Geological Society of South Africa (Fellow and Member)

– Society of Economic Geologists (Member)

– Seequent (Approved Provider of Leapfrog Geo Masterclass)

– Micromine (Beta and Pre-Beta Partner)

– Leapfrog (Beta Partner)

– University of Stellenbosch (External Lecturer)

– South African Institute for Engineering and Environmental Geologists (Associate Member)

– Geological Society of South Africa’s Directorate of Professional Programs (Course Presenter)

– South African Student Chapter of the Society of Economic Geologists (Sponsor)

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Dr Guillermo Fuentes

Principal Geoscientist

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Guillermo holds a Ph.D. in Structural Geology and Tectonics from the University of Chile. He is co-author of two national geological maps for the National Geology and Mining Service of Chile and has been a consultant in economic structural geology for major companies, such as Antofagasta Minerals, SQM, BHP Billiton and Anglo American. He has led generative mineral exploration projects in the north of Chile and has collaborated on structural models for major porphyry deposits in Chile, such as Collahuasi, Los Bronces, Spence and Yabricoya.

Guillermo holds certificates in Ore Deposit Models and Exploration Strategies and Structural Controls on Fluid Flow and Mineralization in Hydrothermal Systems from the University of Tasmania and Applied Structural Geology from Cardiff University. Guillermo is a Lecturer at Santo Tomás University (Santiago), where he is leading studies on the structural controls on mineralization, for generating exploration targets in covered terranes in northern Chile, particularly the carbonate sequences of the Chañarcillo basin in the Vallenar Range and areas beneath the Pampa del Tamarugal in the Atacama Desert, which host several world-class porphyry deposits. Since 2019, Guillermo has worked as a Principal Geoscientist for Incaic Exploration SPA, before joining Tect Geological Consulting (LATAM, South America) as Principal Geoscientist.

Sebastián Perroud

Principal Geoscientist

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Sebastián received his M.Sc. in Structural Geology from the University of Chile, specializing in active faults and neotectonics. He holds certificates in advanced courses in applied structural geology and mineral exploration: Geology Fault Mechanics from the Universidad de Chile, Advanced Structural Geology from CONICET (Argentina), Ore Deposit Models and Exploration Strategies and Structural Controls on Fluid Flow and Mineralisation in Hydrothermal Systems from the University of Tasmania (Australia).

Sebastián founded and served as a Principal Member in Incaic Exploration SpA (2019 – 2023), before his new role in Tect Geological Consulting as Director LATAM and Principal Geoscientist. In the last 6 years he has specialized in economic and structural geology, geological-structural modelling with Leapfrog Geo, mineral exploration and project evaluation. He has consulted on IOCG, porphyry and stratabound copper deposits in Chile, and on Carlin and Orogenic gold deposits in North America. He has also managed several value-added exploration projects for capital raising efforts.

He forms part of a research group at Santo Tomás University (Santiago) studying the structural controls on mineralization, towards generating exploration targets in covered terranes in northern Chile. His current focus is the carbonate sequences of the Chañarcillo basin in the Vallenar Range and areas beneath the Pampa del Tamarugal in the Atacama Desert, which host several world-class porphyry deposits.

Dr Christopher Lambert

Senior Geoscientist

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Christ holds a Ph.D. in Mineral Engineering from Polytechnique Montreal (Canada). He applied temporal, structural and geochemical techniques across a key geological transect in western Quebec to elucidate the late tectonic evolution of the Grenville Orogeny. He previously worked for the Council for Geoscience (South Africa) for 8 years, specializing in geological mapping. During this time he obtained an M.Sc. in Structural Geology from the University of Stellenbosch (South Africa), on temporal and structural controls of granite and pegmatite emplacement associated with the crustal-scale Pofadder-Marshall Rocks shear zone in the Namaqua-Natal Metamorphic Province.

Chris has over 13 years of geological mapping experience at all scales and terrains. He led a pilot coal mapping project in Karoo Sequences of the Moatize-Minjova Basin in Tete (Mozambique) and contributed to mapping and sampling of hydrocarbon source, reservoir and seal rocks in the Sakamena corridor (Madagascar). For desk-based mineral exploration projects, he combined structural analyses with satellite imagery (ASTER, LANDSAT, Sentinel 2) and remote sensing systems (ERDAS, ArcGIS) to identify Au, Ni and Cu, porphyry and epithermal targets in the Central African Copper Belt, the Chagai porphyry copper belt (Pakistan) and the Pontide and Anatolides-Taurides terranes (Turkey).

His interests include training of Geoscientists, melt transport and emplacement processes, regional tectonics, geochronology, structural geology. He has worked on over 30 published geological maps and authored and co-authored 8 peer-reviewed papers. Chris received the 2018 DIVEX (Mineral Diversification in Exploration in Quebec) Award and is a SACNASP member.

Dr Paul Macey

Associate Consultant

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Paul’s training in Geology/Geochemistry at the University of Cape Town culminated in a Ph.D. on modeling and characterization of metamorphic, magmatic and ore-generating fluids in meta-sedimentary rocks of the Damara Belt in Namibia. Paul spent 23 years as a Specialist Mapping Geologist with the Council for Geoscience (CGS, Geological Survey of South Africa) managing large, multi-year, national and international, multi-disciplinary geoscience mapping and research programs in Madagascar, Morocco, Mozambique, South Africa and Namibia. As a Senior CGS Manager, he coordinated an integrated, multidisciplinary 10 year “Expanded Geoscience Mapping Program” for South Africa.

Paul focusses on unravelling the geological histories of complex Precambrian terranes through structural and lithologic mapping, geochronology, whole rock and isotope geochemistry and remote sensing. He has produced over 150 geological maps and accompanying sheet explanations, 45 journal articles and 68 conference papers, has mentored CGS staff members and has co-supervised research projects for 28 post-graduate students. Paul’s interests and experience culminated in a course on “Modern Geological Mapping Techniques”.

Paul was a member of SA Antarctic expeditions and a visiting Research Fellow at ANU and Edinburgh. He sits on various scientific committees including the SA Committee for Stratigraphy (Mesoproterozoic WG Chair) and the Namibian Committee for Stratigraphy. Paul is currently an Honorary Research Associate at the University of Cape Town and the owner and Director of Macey Geological Consulting Pty Ltd.

Caitlin Jones

Geoscientist

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Caitlin holds an M.Sc. in Structural Geology from the University of Stellenbosch. Her research for Barberton Mines (Pty) Ltd focused on the structural controls of hydrothermal fluid flow and gold mineralization within the Fairview and Sheba Mines of the Barberton Greenstone Belt, South Africa.

Her study involved lithological, structural and geochemical analyses of discrete underground fracture- and shear zone-style orebodies, hosted by various rock units, to determine the kinematics of structures and their context in the broader deformational history of the greenstone belt. The work progressed our understanding of high-grade gold deposits and their associated regional and local fluid flow pathways within the Sheba-Fairview mining complex.

Caitlin specializes in the characterization, interpretation, structural mapping and 3D geomodelling of structurally-complex orebodies and their host sequences in LeapfrogGeo and Micromine. She is a member of the Geological Society of South Africa, Society of Economic Geologists and the South African Council for Natural Scientific Professions.

Dr Brett Davis

Associate Consultant
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Brett undertook a Ph.D. in Structural Geology and two Post-Doctorates at James Cook University, Australia. He held the position of Group Structural Geologist for Placer Dome Asia Pacific, Aurion Resources and Delta Gold, Geology Manager and Principal Consultant for RSG, Chief Geologist for Chalice Gold Mines, General Manager of Geology at Consolidated Minerals Limited, Geology Manager for the Woodie Woodie Mn and Beta-Hunt Ni Projects, and Principal Structural Geologist for Dundee Precious Metals.

He is currently Director and Principal Structural Geologist at Olinda Gold, which is strongly focussed on the application of structural geology to the mineral exploration and mining industry, supplemented by Brett’s extensive research background on deformation processes, tectonics and structural controls on mineralisation at all scales.

He has gained extensive experience in multiple mineral commodities and deposit types through his global, longstanding consulting and research activities. Brett is a Fellow of the Society of Economic Geologists, a Member of the Geological Society of Australia, a Member of the International Association of Structural/Tectonic Geologists, a Member of the Editorial Board for the Australian Journal of Earth Sciences and an Adjunct Research Fellow, James Cook University of North Queensland. Brett has authored over 30 peer-reviewed papers and chapters.

Prof. Alex Kisters

Associate Researcher

After an M.Sc. at Aachen University, Alex completed his Ph.D. at the Economic Geology Research Unit, Department of Geology, University of the Witwatersrand, Johannesburg.

He has held the post of Assistant and Visiting Professor at the Institute of Mineralogy and Economic Geology, RWTH Aachen and the Department of Geology, University of Cologne, Germany, respectively. Alex is currently the Head of Department and Full Professor in Structural Geology, Department of Earth Sciences, University of Stellenbosch, South Africa. Alex is a highly-experienced Structural Geologist with extensive field experience.

His research and work concerns rock deformation, regional tectonic evolution of terrains and the controls of hydrothermal fluid flow and partial melts. His main focus is the structural controls on orogenic Au deposits and the processes of melt extraction, magma transport and granite emplacement. His work, in conjunction with the minerals industry, has taken him to projects in Africa, Europe, Russia and Greenland. Alex has written and contributed to over 80 peer-reviewed papers in Nature, Journal of Structural Geology, Tectonophysics, Geology, Economic Geology, Ore Geology Reviews, Mineralium Deposita and the Geological Society of London.

Heike Fourie

Geoscientist

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Heike is a B.Sc. Honours graduate in Applied Geology from the University of Stellenbosch. Her research focused on defining the potential of diamond entrapment within offshore mega-placer deposits along the southwestern coastline of Namibia.

During her studies, she gained experience in interpreting and correlating seismic datasets and marine sedimentary successions in order to characterize the geometry and occurrence of potentially favorable diamond trap-sites. Since joining Tect, Heike has been involved in an array of projects in structurally-complex terranes within Southern Africa.

Heike specializes in the interpretation of geophysical and remote sensing datasets, their integration into GIS compilations and their application to larger targeting exercises, in addition to 3D geomodelling in LeapfrogGeo and Micromine. She is a member of the Society of Economic Geologists and the South African Council for Natural Scientific Professions.

Luke Carlton

Geoscientist

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Luke holds a B.Sc. Honours in Applied Geology from the University of Stellenbosch. His research focused on the structural controls governing auriferous hydrothermal fluid flow within the Archean Barberton Greenstone Belt, South Africa.

During this research, he gained experience at Barberton Mines (Pty) Ltd.’s Sheba Mine, conducting underground structural, lithological and kinematic mapping, analysis of structural data and characterization of orebodies in the Zwartkoppie Anticline. His work addressed the relationship between development of discrete vein network arrays and their controlling shear zone architecture, thereby aiding the understanding of mine- to district-scale controls on auriferous mineralization within the Sheba-Fairview mining district. Since joining Tect, Luke has been involved with an array of projects situated within structurally complex terranes throughout Southern Africa.

Luke specializes in structural mapping, interpretation, and 3D geomodelling, in LeapfrogGeo and Micromine, of structurally-complex ore deposits and their host rock packages. He is a member of the Geological Society of South Africa, the Society for Economic Geologists and the South African Council for Natural Scientific Professions.

Dr Jodie Miller

Associate Researcher

Jodie has accumulated more than 25 years of mapping and research experience in a wide variety of geological terrains in Africa, Europe and Australia. She is involved in generating programs for academia, industry and governmental organizations, with a focus on integrating isotopic and petrological studies with structural geology and tectonics.

She undertakes research in the fields of acid intrusives, thermal metamorphism, layered ultramafics, fluid migration, applied mineralogy and structural geology. Jodie qualified with a Ph.D. in Metamorphic Geology from Monash University, Australia. En-route to this she earned numerous awards and grants for her outstanding research efforts, including the 1993 Departmental Medal, the Western Mining Corporation Prize for Outstanding Achievement, the 1997 European Union of Geosciences Young Scientist Award, Queen’s Trust Australia Award, 2000 and an IAGC Certificate of Recognition in 2008.

She earned the University of Stellenbosch’s Rector’s Award in 2012, 2013 and 2014. Jodie is a Member of the Geological Society of Australia, a Fellow of the Geological Society of South Africa and a Member of the Geological Society of Australia. She has published over 60 peer-reviewed articles in international journals and books.

Howard Baker

Associate Consultant

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Howard holds an M.Sc. in Mineral Resource Evaluation from Cardiff University, which he has put to good use in over 40 Competent Person, Qualified Person and Technical Reports on projects in Brazil, Canada, Ethiopia, Sudan, Liberia, Sierra Leone, Guinea, Mauritania, Congo, Gabon, Nigeria, South Africa, Portugal, Spain, Finland and Sweden.

Besides mineral resource estimation, technical due diligence and reporting, his expertise includes statistical and geostatistical studies of exploration data, exploration planning and geological project development, 3D geological modelling, integrated geology and mine planning studies. Howard is proficient in LeapfrogGeo, Datamine RM, Vulcan, Supervisor and X10.

He was recently a Non-Executive Technical Director of Sula Iron and Gold plc, an AIM-listed gold-focused exploration company operating in Sierra Leone. His roles prior to this include Principal Consultant (Resource Geology) and Practice Leader at SRK Consulting (United Kingdom), Specialist Resource Geologist at Pilbara Iron Ore, Senior Production Geologist at Iluka Resources, Project Geologist at Murrin Nickel Laterite Mine, Project Geologist for GeoCos and Mine Geologist for BHP Billiton. Howard is a Chartered Professional Fellow of the Australasian Institute of Mining and Metallurgy.

Damian Smith

Associate Consultant

Damian graduated from the Camborne School of Mines (United Kingdom) with a M.Sc. in Mining Geology. He has accumulated over 30 years of experience in the mining industry, with a strong focus on PGMs and Cr. He currently fulfils the role of Group Consulting Geologist at Northam Platinum, South Africa.

A recent highlight in his career was the commissioning of Booysendal Mine on the Eastern Limb of the Bushveld Complex, a project that he was responsible for from its inception. He undertakes feasibility, due diligence and CP studies for PGM, Cr and Au resources, including the compilation and auditing of resource estimates. He has completed target generation projects for Cr and Au in southern Africa and has developed PGM, Cr and Au resource models. He is a recognized expert and sought-after consultant on groundwater and rock consolidation strategies. Damian has authored 14 peer-reviewed articles and conference abstracts.

Memberships and affiliations include Master of the Camborne School of Mines, Fellow of the Geological Society of South Africa, Member of the South African Institute of Rock Engineers and Associate Member of the Association of Mine Managers.

Dr Pieter Creus

Associate Consultant
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Pieter completed an M.Sc. in Structural Geology at the University of Stellenbosch, on lower crustal ductile flow mechanisms of the Kliprand Dome in Namibia. Following this, he worked as an Exploration Geologist at AngloGold Ashanti’s Siguiri Gold Mine, Guinea.

His expertise includes mapping of high-grade metamorphic terranes, compilation of geological maps, structural and lithological mapping of opencast mines, liaison with Geotechnical Engineers and mining personnel in pit slope design. Pieter specializes in 3D Geomodeling in Leapfrog and Micromine. He employs Agisoft Metashape Pro, ioGAS, Python and MATLAB scripting to solve complex 3D problems. His proprietary scripts have significantly aided the translation of dense clouds of fabric and bedding orientations into representative 3D form surfaces and apparent dip maps for Tect’s clients. Pieter applied the knowledge gained on two courses: Cisco CCNA: Routing and Switching and Microsoft Server 2012: 70-410 and 70-411 to the set-up of Tect’s servers and IT systems, which have been unfailingly reliable.

He recently completed a Ph.D. in Geometrical and Numerical Modelling, at James Cook University, on the structurally-complex Dugald River Zn-Pb-Ag Mine in Queensland, Australia. He is a member of the Society of Economic Geologists, the Geological Society of South Africa, the South African Council for Natural Scientific Professions and the Australasian Institute of Mining and Metallurgy. Pieter has published 8 peer-reviewed articles to date.

Jonathan Gloyn-Jones

Senior Geoscientist

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Jonathan holds a M.Sc. in Structural and Economic Geology from the University of Stellenbosch. His research focused on the structural controls, deformation and hydrothermal fluid flow in orogenic/lode gold mineralization within the Archean Barberton Greenstone Belt, South Africa. During his studies, he gained experience as a Structural-Economic Geologist at Barberton Mines (Pty) Ltd.’s Fairview Mine, conducting extensive underground structural, lithological and kinematic mapping, analysis and characterization of the Hope Reef Complex and Main Reef Complex orebodies. His work, for which he received the South African Geological Society’s Corstorphine Award, elucidates the mine- to district-scale controls on auriferous mineralization and their regional tectonic implications.

He has been involved in more than 24 projects in complex structural settings, covering both opencast and underground mines and exploration prospects in low- to high-grade metamorphic terranes, throughout southern, central and western Africa and central Asia.

Jonathan specializes in the structural mapping, interpretation, characterization and 3D geomodelling of shear-zone hosted orogenic gold deposits, across a diverse range of greenstones and accreted terranes, using LeapfrogGeo and Micromine. His construction of intricate structural networks, representative form surfaces, fabric domains, representative orebody geometries and grade shell volumes has optimized and guided resource modelling, geotechnical analysis and generative exploration for numerous companies, including Glencore, Kazzinc, Caledonia Mining, Stibium Mining, Osino Resources, Chesser Resources, Shanta Gold, Xtra Gold, Goldenstar Resources and Banro Corporation. He has published 4 peer-reviewed papers in Ore Geology Reviews, Mineralium Deposita and Minerals. He is a member of the Society of Economic Geologists, the Geological Society of South Africa and the South African Council for Natural Scientific Professions.

Ben Stoch

Associate Consultant

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Ben’s M.Sc. concerned the 3D implicit modelling of the Merensky and UG2 Reefs across the main chamber of the Bushveld Complex, using public-domain data. Ben has successfully managed and completed over 20 projects, encompassing research, development and modelling of various prospects across multiple commodity types.

His primary focus is on advanced structural mapping of open-pits and exploration projects, detailed analysis of structural geology and 3D geomodelling using Leapfrog, Micromine and Gemcom. His consulting includes structural domaining, apparent dip analysis and its application towards the delineation of geotechnical design sectors and resource model optimization.

During his tenure, Ben has successfully constructed 3D models for Voorspoed (De Beers), Jwaneng, Orapa, Damtshaa and Letlhakane (Debswana) and Sishen Mine (Kumba). He is the project manager for ongoing 3D modelling work at Kolomela Mine (Kumba), which now incorporates the implementation of Leapfrog Central. Ben has a strong aptitude for database management, client liaison and data manipulation in several software packages. The workflows that he has developed for dynamic 3D gemodelling have significantly increased the productivity of our client’s operations. Ben has published 5 peer-reviewed articles.

Michael McCall

Principal Geoscientist

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Michael McCall holds an M.Sc. in Economic Geology from the University of Stellenbosch. Over the last decade with Tect, he has managed major base metal, precious metal, industrial metal and diamond projects in Namibia, South Africa, Angola, Lesotho, DRC, Tanzania and Zambia. Michael specializes in field- and mine-based geological mapping of structurally-complex terranes, interpretation of regional geophysical data, structural analysis and 3D geological modelling for exploration targeting, resource delineation and Geotechnical design.

He has trained Geoscientists and Geotechnical Engineers in advanced mapping and 3D modelling techniques and undertaken critical exploration and mining project reviews for investors, addressing a wide range of commodities, deposit types and mineralization styles across Africa, North America and South America. To date, he has contributed to 10 peer-reviewed publications and conference proceedings, each with a strong Structural-Economic focus.

Noteworthy projects on which Michael has advanced geoscientific understanding include Bisie Mine (Alphamin), Kansanshi Mine (First Quantum Minerals), KOV, Mashamba East and Mutanda Mines (Glencore) and Sishen Mine (Kumba). Michael is the former Chairperson for the Geological Society of South Africa’s Western Cape Branch, a Fellow of the Geological Society of South Africa, a member of the Society of Economic Geologists and the South African Council for Natural Scientific Professions (Pr. Sci. Nat.).

Dr Corné Koegelenberg

Principal Geoscientist
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Corné holds a Ph.D. in Structural-Economic Geology from the University of Stellenbosch.  His research focused on Proterozoic fold-and-thrust belt tectonics and Au mineralization in Central Africa.  Prior to this, he undertook an M.Sc. in Magmatic-Sulphide Ni-Cu-PGE Mineralization in the Merensky Reef of the Bushveld Complex. 

During his Doctoral studies, he gained experience as an Exploration Geologist for AngloGold Ashanti on the Lusahunga Project in Tanzania, conducting extensive regional- to prospect-scale structural mapping to evaluate mineralization potential and to guide exploration targeting.  Corné has been responsible for over 21 projects in complex structural settings, covering both opencast and underground mines and exploration prospects in low- to high-grade metamorphic terranes.  He has a strong aptitude for mapping, structural data capture and due diligence.  He specializes in 3D Geomodelling in LeapfrogGeo and Micromine.  Corné’s construction of intricate structural networks, representative form surfaces, fabric domains and apparent dip analysis has optimized and guided resource modelling, geotechnical analysis and generative exploration for numerous companies, including Barrick, EMR Capital, Kumba Iron Ore, Shanta Gold, Anglo Gold Ashanti and Anglo American. 

He has published 8 peer-reviewed papers in the Journal of Structural Geology, Ore Geology Reviews, Precambrian Research and the Journal of African Earth Science.  He is a member of the Society of Economic Geologists, the Geological Society of South Africa and the South African Council for Natural Scientific Professions.

Dr Ian Basson

Principal Geoscientist

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Ian holds a Ph.D. in Structural-Economic Geology from the University of Natal. After Post-Doctoral research at the University of Cape Town, on the structural controls on kimberlite emplacement, he founded Tect Geological Consulting in 2002. The company focusses on the resolution of complex structural settings and the manner in which they affect mining, targeting, evaluation and geohydrological modelling.

Ian specializes in the interpretation of complex geology, mapping of opencast mines and 3D Geomodelling in LeapfrogGeo and Micromine. He is an industry expert in lithological and structural interpretation of geophysical data and forward structural modelling and targeting for exploration projects. He has provided his expertise to numerous mining and exploration companies, including Anglo American, Rio Tinto, Kumba Iron Ore, De Beers, Debswana, Glencore, Barrick and First Quantum Minerals. In the last two decades, Ian has gained personal experience in over 150 projects, 18 commodities and 38 deposit types throughout 23 countries.

He is a qualified Practicing Natural Scientist, a Fellow of the Geological Society of South Africa and an Associate Member of the South African Institute of Engineering Geologists. He has published 32 peer-reviewed papers and presents an annual course on 3D Geomodelling for both the Geological Society of South Africa’s Continuing Professional Development Program and the University of Stellenbosch’s Postgraduate Geology Class.

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