St George Mining Ltd (ASX:SGQ, FRA:S0G, OTC:SGQMF) has appointed Brazilian resource geologist Carla Grasso as principal geologist for the Araxa rare earth-niobium project in Minas Gerais, adding technical leadership in the country as it conducts economic studies for potential mining operations.
Grasso will be based in Araxa and will play a lead role in mine planning for the 100% owned project, with responsibilities for mineral resource modeling, reserve estimation, grade control, pit optimization and geometallurgical evaluation. Her role includes overseeing resource reporting, coordinating geophysical programs and supporting short- and long-term mine planning.
The appointment comes as St George moves to build development momentum at Araxa following recent resource upgrades that picked up tonnes of rare earth oxides and niobium. The company sees the appointment of Grasso as an important step in the development of technical studies necessary for future mining operations.
Grasso brings more than 21 years of experience in resource modeling, reserve reporting, mine development and mining operations in Brazil. She has worked in and around Araxa for the past 15 years, including at the neighboring Araxa phosphate mine, giving her direct local and operational experience related to the St. George project.
Most recently, she worked with Mossack as a Specialist Geologist from January 2018 to February 2026, where she was responsible for resource and mine planning leadership in several Brazilian operations, including the Araxa Phosphate Project. Prior to that, she worked at Vail from September 2010 to December 2018, when Vail owned Araxa’s phosphate assets.
Throughout these roles, Grasso managed resource model updates covering database validation, QA/QC analysis, geological modeling, grade estimation, density and geometallurgical variables, resource classification, reconciliation and drill spacing studies. She also worked with mine planning, processing and industrial teams on beneficiation plant production, mine quality and cost reduction initiatives.
Her ability also supports the technical demands of the role. Grasso has experience reporting mineral resources and reserves under the JORC Code, US SK-1300 and Canadian NI 43-101 standards, and is qualified for mineral resource estimation and public technical reporting under AusIMM and CBRR.
Academically, she holds a PhD in Geology from the University of Brasilia, focusing on geometology and mineralization control, a Master’s degree in Geology from the same university and a Bachelor’s degree in Geology from the University of São Paulo.
Carla Grasso
