Articles | Volume 33, issue 6
https://doi.org/10.5194/ejm-33-727-2021
https://doi.org/10.5194/ejm-33-727-2021
Research article
 | 
03 Dec 2021
Research article |  | 03 Dec 2021

Ellinaite, CaCr2O4, a new natural post-spinel oxide from Hatrurim Basin, Israel, and Juína kimberlite field, Brazil

Victor V. Sharygin, Sergey N. Britvin, Felix V. Kaminsky, Richard Wirth, Elena N. Nigmatulina, Grigory A. Yakovlev, Konstantin A. Novoselov, and Mikhail N. Murashko

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Latest update: 25 Feb 2024
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Short summary
Ellinaite, a natural analog of β-CaCr2O4, was discovered at Hatrurim Basin, Israel, and in an inclusion within the super-deep diamond from the Sorriso Creek placer, Brazil. Chemical composition, structural data and physical properties are given for this mineral. It is related to multiple oxides AB2O4 with tunnel structure. This group now includes eight minerals. The overview of ellinaite from all localities suggests different PT–X–fO2 conditions for the mineral and its host rocks.