Articles | Volume 36, issue 1
https://doi.org/10.5194/ejm-36-87-2024
https://doi.org/10.5194/ejm-36-87-2024
New minerals, nomenclature, and classification
 | 
17 Jan 2024
New minerals, nomenclature, and classification |  | 17 Jan 2024

OxyEMG: an application for determination of the oxyspinel group end-members based on electron microprobe analyses

Gabriela R. Ferracutti, Lucía M. Asiain, Antonella S. Antonini, Juan E. Tanzola, and M. Luján Ganuza

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Cited articles

Antao, S. M., Cruickshank, L. A., and Hazrah, K. S.: Structural Trends and Solid-Solutions Based on the Crystal Chemistry of Two Hausmannite (Mn3O4) Samples from the Kalahari Manganese Field, Minerals, 9, 343, https://doi.org/10.3390/min9060343, 2019. 
Anthony, J. W., Bideaux, R. A., Bladh, K. W., and Nichols, M. C.: Handbook of Mineralogy, Mineralogical Society of America, Chantilly, USA, http://www.handbookofmineralogy.org/ (last access: 11 September 2023), 2001–2005. 
Bjerg, E. A., de Brodtkorb, M., and Stumpfl, E. F.: Compositional zoning in Zn-chromites from the Cordillera Frontal Range, Argentina, Mineral. Mag., 57, 131–139, https://doi.org/10.1180/minmag.1993.057.386.13, 1993. 
Bosi, F., Lucchesi, S., and Della Giusta, A.: Structural relationships in (Mn1−xZnx)Mn2O4 (0 x 0.26): The “dragging effect” of the tetrahedron on the octahedron, Am. Mineral., 87, 1121–1127, https://doi.org/10.2138/am-2002-8-909, 2002. 
Bosi, F., Hålenius, U., Andreozzi, G. B., Skogby, H., and Lucchesi, S.: Structural refinement and crystal chemistry of Mn-doped spinel: A case for tetrahedrally coordinated Mn3+ in an oxygen-based structure, Am. Mineral., 92, 27–33, https://doi.org/10.2138/am.2007.2266, 2007. 
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Short summary
The paper proposes an application called OxyEMG (Oxyspinel group End-Member Generator), which is an improved version of EMG. This tool allows for calculating the portions of 31 end-members of the oxyspinel group from data obtained with an electron microprobe. This is fundamental since this group of minerals is considered to be tectonic tracers; their integral composition should be taken into account and not only those end-members that make up the magnetite or ulvöspinel prisms.
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