Toledoite, TiFeSi, a new mineral from inclusions in corundum xenocrysts from Mount Carmel, Israel

Chi Ma; Fernando Cámara; Luca Bindi; William L. Griffin

doi:10.3390/cryst14010096

Toledoite, TiFeSi, a new mineral from inclusions in corundum xenocrysts from Mount Carmel, Israel

Chi Ma^*, Fernando Cámara, Luca Bindi, William L. Griffin^*

^*Corresponding author for this work

School of Natural Sciences
ARC Centre of Excellence for Core to Crust Fluid Systems (incorporation ARC National Key Centre for Geochemical evolution and Metallogeny of Continents (GEMOC))

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Abstract

During our nanomineralogical investigation of melt inclusions in corundum xenocrysts from the Mount Carmel area, Israel, seven new oxide and alloy minerals have been discovered since 2021. Herein, we report toledoite (TiFeSi; IMA 2022-036), a new alloy mineral. Toledoite occurs as irregular crystals 2–16 μm in size, with gupeiite (Fe₃Si), jingsuiite (TiB₂), ziroite (ZrO₂), osbornite (TiN), xifengite (Fe₅Si₃), and naquite (FeSi) in corundum Grain WG1124E-1. Toledoite has an empirical formula (Ti_0.83Cr_0.07Mn_0.06V_0.02)(Fe_0.96Mn_0.04)(Si_0.99P_0.04) and an orthorhombic Ima2 TiFeSi-type structure with the following cell parameters: a = 7.00(1) Å, b = 10.83(1) Å, c = 6.29(1) Å, V = 477(1) Å³, Z = 12. Toledoite is a high-temperature alloy phase, formed under extremely reduced conditions in melt pockets in corundum xenocrysts derived from the upper mantle beneath Mount Carmel in Israel. The name was given in honor of Vered Toledo, of Shefa Gems Ltd. for her support and for providing corundum xenocrysts from the Mount Carmel region for this investigation of new minerals.

Original language	English
Article number	96
Pages (from-to)	1-11
Number of pages	11
Journal	Crystals
Volume	14
Issue number	1
Early online date	21 Jan 2024
DOIs	https://doi.org/10.3390/cryst14010096
Publication status	Published - Jan 2024

Bibliographical note

Copyright the Author(s) 2024. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

corundum
Israel
Mount Carmel
new mineral
TiFeSi
toledoite

Access to Document

10.3390/cryst14010096

Publisher version (open access)Final published version, 3.52 MBLicence: CC BY

Cite this

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title = "Toledoite, TiFeSi, a new mineral from inclusions in corundum xenocrysts from Mount Carmel, Israel",

abstract = "During our nanomineralogical investigation of melt inclusions in corundum xenocrysts from the Mount Carmel area, Israel, seven new oxide and alloy minerals have been discovered since 2021. Herein, we report toledoite (TiFeSi; IMA 2022-036), a new alloy mineral. Toledoite occurs as irregular crystals 2–16 μm in size, with gupeiite (Fe3Si), jingsuiite (TiB2), ziroite (ZrO2), osbornite (TiN), xifengite (Fe5Si3), and naquite (FeSi) in corundum Grain WG1124E-1. Toledoite has an empirical formula (Ti0.83Cr0.07Mn0.06V0.02)(Fe0.96Mn0.04)(Si0.99P0.04) and an orthorhombic Ima2 TiFeSi-type structure with the following cell parameters: a = 7.00(1) {\AA}, b = 10.83(1) {\AA}, c = 6.29(1) {\AA}, V = 477(1) {\AA}3, Z = 12. Toledoite is a high-temperature alloy phase, formed under extremely reduced conditions in melt pockets in corundum xenocrysts derived from the upper mantle beneath Mount Carmel in Israel. The name was given in honor of Vered Toledo, of Shefa Gems Ltd. for her support and for providing corundum xenocrysts from the Mount Carmel region for this investigation of new minerals.",

keywords = "corundum, Israel, Mount Carmel, new mineral, TiFeSi, toledoite",

author = "Chi Ma and Fernando C{\'a}mara and Luca Bindi and Griffin, {William L.}",

note = "Copyright the Author(s) 2024. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher. ",

year = "2024",

month = jan,

doi = "10.3390/cryst14010096",

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AU - Ma, Chi

AU - Cámara, Fernando

AU - Bindi, Luca

AU - Griffin, William L.

N1 - Copyright the Author(s) 2024. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2024/1

Y1 - 2024/1

N2 - During our nanomineralogical investigation of melt inclusions in corundum xenocrysts from the Mount Carmel area, Israel, seven new oxide and alloy minerals have been discovered since 2021. Herein, we report toledoite (TiFeSi; IMA 2022-036), a new alloy mineral. Toledoite occurs as irregular crystals 2–16 μm in size, with gupeiite (Fe3Si), jingsuiite (TiB2), ziroite (ZrO2), osbornite (TiN), xifengite (Fe5Si3), and naquite (FeSi) in corundum Grain WG1124E-1. Toledoite has an empirical formula (Ti0.83Cr0.07Mn0.06V0.02)(Fe0.96Mn0.04)(Si0.99P0.04) and an orthorhombic Ima2 TiFeSi-type structure with the following cell parameters: a = 7.00(1) Å, b = 10.83(1) Å, c = 6.29(1) Å, V = 477(1) Å3, Z = 12. Toledoite is a high-temperature alloy phase, formed under extremely reduced conditions in melt pockets in corundum xenocrysts derived from the upper mantle beneath Mount Carmel in Israel. The name was given in honor of Vered Toledo, of Shefa Gems Ltd. for her support and for providing corundum xenocrysts from the Mount Carmel region for this investigation of new minerals.

AB - During our nanomineralogical investigation of melt inclusions in corundum xenocrysts from the Mount Carmel area, Israel, seven new oxide and alloy minerals have been discovered since 2021. Herein, we report toledoite (TiFeSi; IMA 2022-036), a new alloy mineral. Toledoite occurs as irregular crystals 2–16 μm in size, with gupeiite (Fe3Si), jingsuiite (TiB2), ziroite (ZrO2), osbornite (TiN), xifengite (Fe5Si3), and naquite (FeSi) in corundum Grain WG1124E-1. Toledoite has an empirical formula (Ti0.83Cr0.07Mn0.06V0.02)(Fe0.96Mn0.04)(Si0.99P0.04) and an orthorhombic Ima2 TiFeSi-type structure with the following cell parameters: a = 7.00(1) Å, b = 10.83(1) Å, c = 6.29(1) Å, V = 477(1) Å3, Z = 12. Toledoite is a high-temperature alloy phase, formed under extremely reduced conditions in melt pockets in corundum xenocrysts derived from the upper mantle beneath Mount Carmel in Israel. The name was given in honor of Vered Toledo, of Shefa Gems Ltd. for her support and for providing corundum xenocrysts from the Mount Carmel region for this investigation of new minerals.

KW - corundum

KW - Israel

KW - Mount Carmel

KW - new mineral

KW - TiFeSi

KW - toledoite

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UR - http://purl.org/au-research/grants/arc/CE1101017

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SN - 2073-4352

VL - 14

SP - 1

EP - 11

JO - Crystals

JF - Crystals

IS - 1

M1 - 96

ER -

Toledoite, TiFeSi, a new mineral from inclusions in corundum xenocrysts from Mount Carmel, Israel

Abstract

Bibliographical note

Keywords

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ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) (ARC)

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Toledoite, TiFeSi, a new mineral from inclusions in corundum xenocrysts from Mount Carmel, Israel

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Projects

ARC Centre of Excellence for Core to Crust Fluid Systems (CCFS) (ARC)

Cite this