New Minerals from Inclusions in Corundum Xenocrysts from Mt. Carmel, Israel: Magnéliite, Ziroite, Sassite, Mizraite-(Ce) and Yeite

• Published in: Materials 2023-12, Vol.16 (24), p.7578
• Main Authors: Ma, Chi, Cámara, Fernando, Bindi, Luca, Toledo, Vered, Griffin, William L
• Format: Article
• Language: English
• Subjects: Aluminum; Corundum; Crystal structure; Crystals; Electrons; Heat resistant alloys; High temperature; Inclusions; Mineralogy; Minerals; Mullite; Names; Parameters; Registration; Silicon base alloys; Titanium; Volcanoes; Zirconium dioxide
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma16247578

Our nanomineralogical investigation of melt inclusions in corundum xenocrysts from the Mt. Carmel area, Israel has revealed seven IMA-approved new minerals since 2021. We report here four new oxide minerals and one new alloy mineral. Magnéliite (Ti Ti O ; IMA 2021-111) occurs as subhedral crystals, ~4 μm in size, with alabandite, zirconolite, Ti,Al,Zr-oxide, and hibonite in corundum Grain 767-1. Magnéliite has an empirical formula (Ti Al Ti Mg Ca Sc ) (Ti Zr ) O and the triclinic 1¯ Ti O -type structure with the cell parameters: = 5.60(1) Å, = 7.13(1) Å, = 12.47(1) Å, = 95.1(1)°, = 95.2(1)°, = 108.7(1)°, = 466(2) Å , = 4. Ziroite (ZrO ; IMA 2022-013) occurs as irregular crystals, ~1-4 μm in size, with baddeleyite, hibonite, and Ti,Al,Zr-oxide in corundum Grain 479-1a. Ziroite has an empirical formula (Zr Ti Mg Al Hf ) O and the tetragonal 4 / zirconia(HT)-type structure with the cell parameters: = 3.60(1) Å, = 5.18(1) Å, = 67.1(3) Å , = 2. Sassite (Ti Ti O ; IMA 2022-014) occurs as subhedral-euhedral crystals, ~4-16 μm in size, with Ti,Al,Zr-oxide, mullite, osbornite, baddeleyite, alabandite, and glass in corundum Grain 1125C1. Sassite has an empirical formula (Ti Al Ti Mg ) (Ti Zr Si ) O and the orthorhombic pseudobrookite-type structure with the cell parameters: = 3.80(1) Å, = 9.85(1) Å, = 9.99(1) Å, = 374(1) Å , = 4. Mizraite-(Ce) (Ce(Al Mg)O ; IMA 2022-027) occurs as euhedral crystals,