Banca de QUALIFICAÇÃO: Angel Augusto Verbel Olarte

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : Angel Augusto Verbel Olarte
DATE: 01/12/2022
TIME: 08:30
LOCAL: Sala de Videoconferência do IG
TITLE:

Geochemical signatures of gold: From the deposit to your hands

KEY WORDS:

Gold, Geochemistry, Machine learning, Traceability, Chain of production

PAGES: 64
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUMMARY:

Gold production may be achieved through three main figures: artisanal mining, industrial mining, and illegal mining. Which could obtain it from a wide variety of ore deposits. Usually illegal mining comes with environmental, social, and economic problems that could scale from local to national. Therefore, it becomes imperative to ensure a responsible chain of production from the deposit to the consumers hands. Here a cutting-edge methodology is presented to trace gold from its original gold deposit and how it changes through the supply chain using traditional geochemistry (i.e., XRF, EPMA & LA-ICP-MS) combined with machine learning algorithms to discriminate, explore, and search for patterns in gold geochemistry to determine the possible source of a given sample. This technique can be applied on in-situ samples as well as analysis from the National Bank of Gold Profiles (BANPA). Although samples can be classified and discriminated among their peers on the same step of the supply chain a link between each step it still needed to secure the traceability of gold.

BANKING MEMBERS:
Presidente - 2697315 - MARIA EMILIA SCHUTESKY
Interno - 1336460 - FEDERICO ALBERTO CUADROS JIMENEZ
Interno - 1704135 - MARCELO PERES ROCHA
Interno - 1057547 - VALMIR DA SILVA SOUZA
Externa ao Programa - 1780820 - SUSANNE TAINA RAMALHO MACIEL