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2024 Journal Article Zircon coupled dissolution-precipitation textures distinguish xenocrystic cargo from rare magmatic zircon in the Paleoarchean Bacuri Mafic-Ultramafic layered Complex, BrazilSpier, Carlos Alberto, Daczko, Nathan R. and Zhou, Renjie (2024). Zircon coupled dissolution-precipitation textures distinguish xenocrystic cargo from rare magmatic zircon in the Paleoarchean Bacuri Mafic-Ultramafic layered Complex, Brazil. Precambrian Research, 404 107342, 107342. doi: 10.1016/j.precamres.2024.107342 |
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2024 Journal Article A mineralogy characterisation technique for copper ore in flotation pulp using deep learning machine vision with optical microscopyKoh, Edwin J.Y., Amini, Eiman, Spier, Carlos A., McLachlan, Geoffrey J., Xie, Weiguo and Beaton, Nick (2024). A mineralogy characterisation technique for copper ore in flotation pulp using deep learning machine vision with optical microscopy. Minerals Engineering, 205 108481, 1-16. doi: 10.1016/j.mineng.2023.108481 |
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2023 Journal Article Addressing geological challenges in mineral resource estimation: a comparative study of deep learning and traditional techniquesBattalgazy, Nurassyl, Valenta, Rick, Gow, Paul, Spier, Carlos and Forbes, Gordon (2023). Addressing geological challenges in mineral resource estimation: a comparative study of deep learning and traditional techniques. Minerals, 13 (7) 982, 982. doi: 10.3390/min13070982 |
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2022 Journal Article Middle Permian magmatism in the Tangjia-Sumdo region, Tibet: evidence for intra-oceanic subductionWang, Bin, Xie, Chao-Ming, Spier, Carlos A., Dong, Yong-Sheng, Yu, Yun-Peng, Song, Yu-Hang, Duan, Meng-Long and Yakymchuk, Chris (2022). Middle Permian magmatism in the Tangjia-Sumdo region, Tibet: evidence for intra-oceanic subduction. International Geology Review, 65 (4), 1-22. doi: 10.1080/00206814.2022.2056718 |
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2021 Journal Article Zircon U-Pb isotopic and geochemical study of metanorites from the chromite-mineralised Bacuri Mafic-Ultramafic Complex: insights of a Paleoarchean crust in the Amapá Block, Guyana Shield, BrazilSpier, Carlos Alberto, Ferreira Filho, Cesar Fonseca and Daczko, Nathan (2021). Zircon U-Pb isotopic and geochemical study of metanorites from the chromite-mineralised Bacuri Mafic-Ultramafic Complex: insights of a Paleoarchean crust in the Amapá Block, Guyana Shield, Brazil. Gondwana Research, 105, 262-289. doi: 10.1016/j.gr.2021.09.010 |
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2021 Journal Article Magma mixing in the genesis of the Qingshanbao granitoids in the Longshoushan area: implications for the tectonic evolution of the North Qilian orogenic belt, NW ChinaLiu, Wen-Heng, Spier, Carlos, Niu, Yu-Ben, Liu, Xiao-Dong, Yan, Jie, Wang, Kai-Xing and Pan, Jia-Yong (2021). Magma mixing in the genesis of the Qingshanbao granitoids in the Longshoushan area: implications for the tectonic evolution of the North Qilian orogenic belt, NW China. Geological Journal, 56 (9) gj.4195, 1-24. doi: 10.1002/gj.4195 |
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2020 Journal Article From Fresh Itabirites and Carbonates to Weathered Iron Ore: Mineral Composition, Density and Porosity of Different Fresh and Altered Rocks from the Quadrilátero Ferrífero, BrazilRibeiro, Diniz, Moraes, Israel, Kwitko-Ribeiro, Rogerio, Braga, Deivid, Spier, Carlos and Santos, Pedro (2020). From Fresh Itabirites and Carbonates to Weathered Iron Ore: Mineral Composition, Density and Porosity of Different Fresh and Altered Rocks from the Quadrilátero Ferrífero, Brazil. Minerals, 11 (1) 29, 1-30. doi: 10.3390/min11010029 |
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2020 Journal Article Microbial weathering signatures in lateritic ferruginous duricrustsLevett, Alan, Vasconcelos, Paulo M., Gagen, Emma J., Rintoul, Llew, Spier, Carlos, Guagliardo, Paul and Southam, Gordon (2020). Microbial weathering signatures in lateritic ferruginous duricrusts. Earth and Planetary Science Letters, 538 116209, 1-16. doi: 10.1016/j.epsl.2020.116209 |
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2020 Journal Article Mineralogy and genesis of rare Al-phosphate minerals in weathered itabirite and iron ore from the Quadrilátero Ferrífero, Minas Gerais, BrazilSpier, C. A., Kumar, A. and Nunes, A. P.L. (2020). Mineralogy and genesis of rare Al-phosphate minerals in weathered itabirite and iron ore from the Quadrilátero Ferrífero, Minas Gerais, Brazil. Ore Geology Reviews, 118 103359. doi: 10.1016/j.oregeorev.2020.103359 |
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2018 Journal Article Geochemistry of canga (ferricrete) and evolution of the weathering profile developed on itabirite and iron ore in the Quadrilátero Ferrífero, Minas Gerais, BrazilSpier, C. A., Levett, A. and Rosière, C. A. (2018). Geochemistry of canga (ferricrete) and evolution of the weathering profile developed on itabirite and iron ore in the Quadrilátero Ferrífero, Minas Gerais, Brazil. Mineralium Deposita, 54 (7), 983-1010. doi: 10.1007/s00126-018-0856-7 |
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2014 Journal Article (U-Th)/He geochronology of goethite and the origin and evolution of cangasMonteiro,Hevelyn S., Vasconcelos, Paulo M., Farley, Kenneth A., Spier, Carlos A. and Mello, Claudio L. (2014). (U-Th)/He geochronology of goethite and the origin and evolution of cangas. Geochimica et Cosmochimica Acta, 131, 267-289. doi: 10.1016/j.gca.2014.01.036 |
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2007 Journal Article Geochemistry and genesis of the banded iron formations of the Cauê Formation, Quadrilátero Ferrífero, Minas Gerais, BrazilSpier, Carlos A., de Oliveira, Sonia M. B., Sial, Alcides N. and Rios, Francisco J. (2007). Geochemistry and genesis of the banded iron formations of the Cauê Formation, Quadrilátero Ferrífero, Minas Gerais, Brazil. Precambrian Research, 152 (3-4), 170-206. doi: 10.1016/j.precamres.2006.10.003 |
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2006 Journal Article 40Ar/39Ar geochronological constraints on the evolution of lateritic iron deposits in the Quadrilatero Ferrifero, Minas Gerais, BrazilSpier, C. A., Vasconcelos, P. M. and Oliviera, S. M. B. (2006). 40Ar/39Ar geochronological constraints on the evolution of lateritic iron deposits in the Quadrilatero Ferrifero, Minas Gerais, Brazil. Chemical Geology, 234 (1-2), 79-104. doi: 10.1016/j.chemgeo.2006.04.006 |
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2003 Journal Article Geology and geochemistry of the Águas Claras and Pico Iron Mines, Quadrilátero Ferrífero, Minas Gerais, BrazilSpier, CA, de Oliveira, SMB and Rosiere, CA (2003). Geology and geochemistry of the Águas Claras and Pico Iron Mines, Quadrilátero Ferrífero, Minas Gerais, Brazil. Mineralium Deposita, 38 (6), 751-774. doi: 10.1007/s00126-003-0371-2 |
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2002 Journal Article Estudo Sm-Nd do Complexo Mafico-Ultramafico Bacuri, Amapa: idade da intrusao, metamorfismo e natureza do magma originalPimentel, M. M., Spier, Carlos Alberto and Ferreira Filho, César Fonseca (2002). Estudo Sm-Nd do Complexo Mafico-Ultramafico Bacuri, Amapa: idade da intrusao, metamorfismo e natureza do magma original. Brazilian Journal of Geology, 32 (3), 371-376. |
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2001 Journal Article The chromite deposits of the Bacuri mafic-ultramafic layered complex, Guyana shield, Amapa State, BrazilSpier, CA and Ferreira, CFF (2001). The chromite deposits of the Bacuri mafic-ultramafic layered complex, Guyana shield, Amapa State, Brazil. Economic Geology and the Bulletin of the Society of Economic Geologists, 96 (4), 817-835. doi: 10.2113/96.4.817 |
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1999 Journal Article Geologia, estratigrafia e depósitos minerais do projeto Vila Nova, escudo das Guianas, Amapá, BrasilSpier, Carlos Alberto and Ferreira Filho, César Fonseca (1999). Geologia, estratigrafia e depósitos minerais do projeto Vila Nova, escudo das Guianas, Amapá, Brasil. Brazilian Journal of Geology, 29 (2), 173-178. |
