Articles | Volume 36, issue 2
https://doi.org/10.5194/ejm-36-267-2024
https://doi.org/10.5194/ejm-36-267-2024
Research article
 | 
13 Mar 2024
Research article |  | 13 Mar 2024

Macraeite, [(H2O)K]Mn2(Fe2Ti)(PO4)4[O(OH)](H2O)10  ⋅  4H2O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, Portugal

Ian E. Grey, Christian Rewitzer, Rupert Hochleitner, Anthony R. Kampf, Stephanie Boer, William G. Mumme, and Nicholas C. Wilson

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Short summary
Macraeite is the fourth type mineral to be described from the Mangualde pegmatite, Portugal, and is the first paulkerrite-group mineral to be characterised from the locality. Its crystal structure has been refined using synchrotron diffraction data, and its chemical analysis, Raman spectrum, and optical properties are reported.