Mayra is a geometallurgy specialist with extensive experience leading geometallurgical studies and developing predictive models for greenfield and brownfield mining projects. She has a strong background in process mineralogy, the design and management of metallurgical testwork programs, and process design, supporting process optimisation and project development.
Her experience includes working as a Senior Metallurgist at Transmin Metallurgical Consultants in Lima, Peru. She recently completed her PhD in Mineral Processing at The University of Queensland, where her research focused on understanding the effect of mineral textures on flotation performance. She is currently a researcher with the Flotation Chemistry Group at the Julius Kruttschnitt Mineral Research Centre (JKMRC), working on ore characterisation, process mineralogy, metallurgical testing, and flotation chemistry.
Publications
Jefferson Montoya, M; Jones, TR; Curtis-Morar, C; Parbhakar-Fox, A; Forbes, G; Forbes, E ,Impact of Pyrite Textures Prevalence on Flotation Performance in Mount Isa Copper Orebodies, Mineral Processing and Extractive Metallurgy Review, 1-15, 2024.
Forbes, E; Jefferson, M; Yenial-Arslan, U; Curtis-Morar, C; O'Donnell, R, Solving the mystery of natural pyrite flotation–A mineralogy-based approach, Minerals Engineering, 207,108544, 2024.
Jefferson, Mayra; Yenial-Arslan, Unzile; Evans, Catherine; Curtis-Morar, Catherine; O'Donnell, Roxanne; Parbhakar-Fox, Anita; Forbes, Elizaveta, Effect of pyrite textures and composition on flotation performance: A review, Minerals Engineering, 201,108234, 2023.
Jefferson, Mayra; Forbes, Gordon; Brown, Elliot; Curtis-Morar, Catherine; Parbhakar-Fox, Anita; Forbes, Elizaveta, An object-based image recognition approach methodology for pyrite texture quantification in flotation performance studies, Procemin, 2023.
Yenial-Arslan, Unzile; Jefferson, Mayra; Curtis-Morar, Catherine; Forbes, Elizaveta; Pathway to prediction of pyrite floatability from copper ore geological domain data, Minerals, 13, 6, 801, 2023.
La Torre, Luis; Jefferson, Mayra; Johnston, Adam; Concha, Jose; Wasmund, Eric, Simulation of HydroFloat® performance in flotation circuits for early stage project evaluation, Procemin 2021.
Jefferson, Mayra; Johnston, Adam; Matias, Cesar; Davila, Nilo, A roadmap to geometallurgical modelling at The Cerro Lindo VMS Deposit, Procemin 2020.
Johnston, Adam; Jefferson, Mayra, Minimum criteria for reporting representativity of metallurgical samples, Procemin 2017.