| Reference Type | Journal (article/letter/editorial) |
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| Title | Griffinite, Al2TiO5: A New Oxide Mineral from Inclusions in Corundum Xenocrysts from the Mount Carmel Area, Israel |
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| Journal | Crystals |
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| Authors | Ma, Chi | Author |
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| Cámara, Fernando | Author |
| Toledo, Vered | Author |
| Bindi, Luca | Author |
| Year | 2023 (September 26) | Volume | < 13 > |
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| Page(s) | 1427 | Issue | < 10 > |
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| Publisher | MDPI AG |
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| URL | |
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| DOI | doi:10.3390/cryst13101427Search in ResearchGate |
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| Generate Citation Formats |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 16857193 | Long-form Identifier | mindat:1:5:16857193:4 |
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| GUID | 0 |
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| Full Reference | Ma, Chi, Cámara, Fernando, Toledo, Vered, Bindi, Luca (2023) Griffinite, Al2TiO5: A New Oxide Mineral from Inclusions in Corundum Xenocrysts from the Mount Carmel Area, Israel. Crystals, 13 (10). 1427 doi:10.3390/cryst13101427 |
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| Plain Text | Ma, Chi, Cámara, Fernando, Toledo, Vered, Bindi, Luca (2023) Griffinite, Al2TiO5: A New Oxide Mineral from Inclusions in Corundum Xenocrysts from the Mount Carmel Area, Israel. Crystals, 13 (10). 1427 doi:10.3390/cryst13101427 |
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| In | Link this record to the correct parent record (if possible) |
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| Abstract/Notes | Griffinite (IMA 2021-110), ideally Al2TiO5, is a new mineral from inclusions in corundum xenocrysts from the Mount Carmel area, Israel. It occurs as subhedral crystals, ~1–4 μm in size, together with Zr-rich rutile within a corundum grain. In this study, a mean of eight electron probe microanalyses gave TiO2 44.41 (24), Al2O3 55.13 (18), FeO 0.47 (5), and MgO 0.37 (2), totaling 100.38 wt%, which corresponded, on the basis of a total of five oxygen atoms, to (Al1.97Mg0.02Fe0.01)Ti1.01O5. Electron back-scatter diffraction studies revealed that griffinite is orthorhombic and in the space group Cmcm, with a = 3.58 (2) Å, b = 9.44 (1) Å, c = 9.65 (1) Å, and V = 326 (2) Å3 with Z = 4. The six strongest calculated powder diffraction lines [d in Å (I/I0) (hkl)] are 3.347 (100) (110); 2.658 (90) (023); 4.720 (77) (020); 1.903 (57) (043); 1.790 (55) (200); and 1.688 (44) (134). In the crystal structure, Al3+ and Ti4+ are disordered into two distinct distorted octahedra, which form edge-sharing double chains. Griffinite is a high-temperature oxide mineral, formed in melt pockets in corundum-aggregate xenoliths derived from the upper mantle beneath Mount Carmel, Israel. The new mineral is named after William L. Griffin, a geologist at Macquarie University, Australia. |
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