Staff

PhD Giovanni Edson Pedemonte Castro

Function and Responsibilities:

Research Assistant in the "Section 3.1: Inorganic and Isotope Geochemistry" group

Career:

Research Assistant – Economic Geology / Ore Deposits — GFZ Helmholtz Centre for Geosciences, Potsdam, Germany
October 2025 – Present
Applied research on sediment-hosted Cu mineralisation in the Central European Kupferschiefer
- Geological and mineralogical investigation of mineralised exploration drill core from Germany, integrating core-scale observations with ore microscopy, mineral chemistry, stable isotopes, and high-resolution analytical methods.
- Characterisation of ore and alteration assemblages, reconstruction of mineral paragenesis, and evaluation of redox evolution and mineralisation processes relevant to sediment-hosted Cu–Ag systems.
- Integration of SEM, TEM/STEM, LA-ICP-MS/MS, SIMS, and related datasets with drill-core geology and exploration-scale geological interpretation.
- Development and evaluation of mineralogical and geochemical criteria relevant to geological modelling and exploration targeting.

Doctoral Researcher – Applied Economic Geology — Université Laval, Québec, Canada
September 2021 – March 2026
Industry-collaborative doctoral research with Eldorado Gold Quebec (TSX:ELD) on the Triangle orogenic gold deposit, Val-d’Or district, Quebec
- On-site investigation and geological contextualisation of mineralised drill core, hydrothermal alteration, and mineralised structures.
- Integration of drill-core observations with ore mineralogy, petrography, mineral chemistry, and stable-isotope geochemistry.
- Reconstruction of mineral paragenesis and successive hydrothermal/mineralisation events; evaluation of geochemical and mineralogical variability along mineralised structures.
- Assessment of mineralogical and geochemical exploration vectors and their potential application to ore-shoot characterisation.
- Development of deposit-scale interpretations linking mineral textures, geochemistry, fluid evolution, and Au mineralisation; preparation of peer-reviewed outputs derived from the doctoral research.

MSc Researcher – Applied Economic Geology — Université de Genève & Université de Lausanne, Switzerland
September 2019 – July 2021
Industry-collaborative research with Trevali Mining Corp. (OTC: TREVQ) on the Santander Zn–Pb–Ag skarn and carbonate-replacement deposit, central Peru
- On-site geological investigation and contextualisation of mineralised drill-core, including lithology, alteration, mineralisation styles, and ore-mineral assemblages.
- Ore microscopy, paragenetic reconstruction, mineral chemistry, and stable-isotope geochemistry applied to hydrothermal evolution and mineralisation processes.
- Assessment of sulfide geochemistry and spatial mineralogical/geochemical variability relevant to mineralisation vectoring.
- Integration of geological, mineralogical, and geochemical observations within a deposit-scale exploration framework.


Exploration Assistant Geologist — Cía. Minera Los Andes Perú Gold SAC, northern Peru
July 2018 – July 2019
Greenfields exploration for Au and polymetallic mineralisation across La Libertad, Ancash, and Cajamarca regions, northern Peru
- Evaluation of mineral prospects; detailed lithological, structural, and hydrothermal alteration mapping; systematic geological and geochemical sampling.
- Drill-program support and supervision of QA/QC procedures and HSE compliance.
- 3-D geological modelling using Leapfrog Geo and management/validation of exploration databases using Fusion GDMS and Datamine.
- Integration of mapping, sampling, drilling, and geological datasets for prospect-scale interpretation.

Junior Exploration Geologist (Contract) — Minera Bateas SAC, Caylloma Mine, Arequipa, Peru
July – September 2017
Brownfields exploration campaign within the Caylloma polymetallic Ag–Pb–Zn mining district, southern Peru
- Geological and structural mapping campaign; hydrothermal alteration characterisation using TerraSpec HALO.
- Detailed drill-core logging and sampling; preparation and updating of geological cross-sections.
- 3-D geological modelling and interpretation using Leapfrog Geo; supervision of sampling and QA/QC procedures.

Trainee Geologist / Mine and Exploration Geologist — Cía. Minera Atacocha S.A.A. – Nexa Resources, Pasco, Peru
January 2016 – June 2017
Underground mine geology, resource geology, and exploration support at the Atacocha polymetallic mine, central Peru
- Underground geological mapping, drill-core interpretation, and 3-D geological modelling using Leapfrog Geo.
- Resource modelling and estimation support using MineSight; ore-control activities and support to resource/reserve classification and reconciliation.
- Preparation and review of grade-control, dilution, and reserve-match reports.
-Support to drilling programs and supervision of QA/QC and HSE procedures.

Geology Intern – Hydro-Geo Consultores SAC, Peru
February – June 2014
Geological consulting support for the Peruvian mining industry, including field investigation of the MARSA orogenic gold system, Pataz district, northern Peru.
- Geological and structural mapping of lithological units, structural architecture, mineralised zones, and controls on Au mineralisation.
- Geological sampling, field documentation, and integration of geological and structural observations for interpretation of the mineralised system.
- Contribution to geological assessment of an operating gold-mining district and compliance with field QA/QC and HSE procedures.

Geology Intern – Mineral Exploration and Prospect Assessment — INGEMMET – Geological Survey of Peru
February – June 2013
Government-led mineral prospecting within the ANAPs programme, including prospect-scale assessment of the Jalaoca Cu–Mo porphyry system in the Andahuaylas–Yauri Batholith (Apurimac, Peru)
- Geological and structural mapping of intrusive, hydrothermal alteration, and mineralised domains.
- Petrographic and ore-mineralogical characterisation and integration of lithogeochemical/exploration-geochemical data.
- Evaluation of geological, mineralogical, and geochemical characteristics relevant to Cu–Mo porphyry prospectivity; 3-D geological visualisation using Leapfrog Geo.

Education:

PhD in Earth Sciences – Université Laval, Quebec, Canada
September 2021 – March 2026
Economic geology and ore deposits. Doctoral research on hydrothermal processes, mineralisation, mineral chemistry, and stable isotopes in orogenic Au systems, conducted in collaboration with Eldorado Gold Quebec.
M.Sc. in Earth Sciences, University of Geneva and University of Lausanne, Switzerland
September 2019 – July 2021
Specialisation in economic geology, geochemistry, tectonics, and ore deposits. MSc research on the Santander Zn–Pb–Ag skarn/CRD system (Central Peru), conducted in collaboration with Trevali Mining Corp.
B.Eng. in Geological Engineering, National University of San Marcos, Lima, Peru
March 2010 – June 2015
Bachelor thesis on tectonothermal evolution and U–Pb geochronology of accessory minerals, collaboration with Trinity College Dublin (Ireland).

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