@article{josé_rodrigues_pereira_2021,  title={Influence of Mn2+ ions on depression of quartz and spessartine in gondite ore},  volume={74},  ISSN={2448-167X},  url={https://doi.org/10.1590/0370-44672019740168},  DOI={10.1590/0370-44672019740168},  number={1},  journal={REM - International Engineering Journal},  publisher={Fundação Gorceix},  author={José, Fábio de São and Rodrigues, Guilherme Henrique Gualandi and Pereira, Carlos Alberto},  year={2021},  month={Jan},  pages={75–82} }