Trevorite: Ni-rich spinel formed by metasomatism and desulfurization processes at Bon Accord, South Africa?

Journal article

O'Driscoll, Brian, Clay, Patricia L., Cawthorn, R. Grant, Lenaz, Davide, Adetunji, Jacob and Kronz, Andreas 2014. Trevorite: Ni-rich spinel formed by metasomatism and desulfurization processes at Bon Accord, South Africa? Mineralogical Magazine. https://doi.org/10.1180/minmag.2014.078.1.11
AuthorsO'Driscoll, Brian, Clay, Patricia L., Cawthorn, R. Grant, Lenaz, Davide, Adetunji, Jacob and Kronz, Andreas
Abstract

The 3.5 Ga Bon Accord Ni deposit occurs within the lowest serpentinized mafic ultramafic lavas of the Barberton Greenstone Belt (South Africa). Though now completely mined out, it comprised a suite of rare Ni-rich minerals that led to its interpretation as either an extraterrestrial body or as an oxidized fragment of Fe-Ni alloy originating from the terrestrial core. In this study, we draw on detailed petrographic observation and mineral chemical data, as well as previous work, to re-evaluate these ideas. The balance of evidence, from thin section (<1 mm) to regional (∼10s of km) scales, appears to support an alternative origin for Bon Accord, possibly as an oxidized Ni-sulfide deposit formed in association with ocean floor komatiite eruptions.

KeywordsBon accord; Desulfursization; Metasomatism; South Africa; Spinel; Trevorite
Year2014
JournalMineralogical Magazine
PublisherMineralogical Society
ISSN0026461X
14718022
Digital Object Identifier (DOI)https://doi.org/10.1180/minmag.2014.078.1.11
Web address (URL)http://hdl.handle.net/10545/621579
hdl:10545/621579
Publication dates01 Feb 2014
Publication process dates
Deposited02 May 2017, 15:22
Rights

Archived with thanks to Mineralogical Magazine

ContributorsKeele University, University of Manchester, University of the Witwatersrand, Trieste University, University of Derby and University of Göttingen
File
File Access Level
Open
Permalink -

https://repository.derby.ac.uk/item/92545/trevorite-ni-rich-spinel-formed-by-metasomatism-and-desulfurization-processes-at-bon-accord-south-africa

Log in to edit

Download files

  • 55
    total views
  • 0
    total downloads
  • 3
    views this month
  • 0
    downloads this month

Export as

Related outputs

UK pension changes in 2015: some mathematical considerations
Stubbs, John and Adetunji, Jacob 2016. UK pension changes in 2015: some mathematical considerations. The Mathematical Gazette. https://doi.org/10.1017/mag.2016.55
Explainer: what dust from the Sahara does to you and the planet
Adetunji, Jacob 2016. Explainer: what dust from the Sahara does to you and the planet. The Conversation.
Low temperature, authigenic illite and carbonates in a mixed dolomite-clastic lagoonal and pedogenic setting, Spanish Central System, Spain
Huggett, Jennifer, Cuadros, Javier, Gale, Andrew S., Wray, David and Adetunji, Jacob 2016. Low temperature, authigenic illite and carbonates in a mixed dolomite-clastic lagoonal and pedogenic setting, Spanish Central System, Spain. Applied Clay Science. https://doi.org/10.1016/j.clay.2016.06.016
57Fe Mössbauer spectroscopy investigations of iron oxidation states in the Harmattan dust nutrient contribution to West African soils
Adetunji, Jacob 2014. 57Fe Mössbauer spectroscopy investigations of iron oxidation states in the Harmattan dust nutrient contribution to West African soils. Atmospheric Environment. https://doi.org/10.1016/j.atmosenv.2014.09.025
Mineralogical and geochemical characterisation of warm-water, shallow-marine glaucony from the Tertiary of the London Basin
Huggett, Jennifer, Adetunji, Jacob, Longstaffe, Fred and Wray, David 2017. Mineralogical and geochemical characterisation of warm-water, shallow-marine glaucony from the Tertiary of the London Basin. Clay Minerals. https://doi.org/10.1180/claymin.2017.052.1.02
Archaean chromitites show constant Fe 3+ /ΣFe in Earth's asthenospheric mantle since 3.8 Ga
Rollinson, Hugh, Adetunji, Jacob, Lenaz, Davide and Szilas, Kristoffer 2017. Archaean chromitites show constant Fe 3+ /ΣFe in Earth's asthenospheric mantle since 3.8 Ga. Lithos. 282-283, pp. 316-325. https://doi.org/10.1016/j.lithos.2017.03.020
Ionic Radii
Rollinson, Hugh and Adetunji, Jacob 2017. Ionic Radii. in: White, W. M. (ed.) Encyclopedia of Geochemistry: A Comprehensive Reference Source on the Chemistry of the Earth New York Springer International Publishing. pp. 1-6
Highly refractory Archaean peridotite cumulates: Petrology and geochemistry of the Seqi Ultramafic Complex, SW Greenland
Szilas, Kristoffer, van Hinsberg, Vincent J., McDonald, Iain, Næraa, Tomas, Rollinson, Hugh, Adetunji, Jacob and Bird, Dennis 2017. Highly refractory Archaean peridotite cumulates: Petrology and geochemistry of the Seqi Ultramafic Complex, SW Greenland. Geoscience Frontiers. 9 (3), pp. 1-26. https://doi.org/10.1016/j.gsf.2017.05.003
Comment on ‘Podiform chromitites do form beneath mid-ocean ridges’ by Arai, S. and Miura, M.
Rollinson, Hugh and Adetunji, Jacob 2016. Comment on ‘Podiform chromitites do form beneath mid-ocean ridges’ by Arai, S. and Miura, M. Lithos. 254-255, pp. 131-133. https://doi.org/10.1016/j.lithos.2015.10.023
Chromite in the mantle section of the Oman Ophiolite: Implications for the tectonic evolution of the Oman Ophiolite
Rollinson, Hugh and Adetunji, Jacob 2015. Chromite in the mantle section of the Oman Ophiolite: Implications for the tectonic evolution of the Oman Ophiolite. Acta Geologica Sineca. 89 (Supp.2), pp. 73-76. https://doi.org/10.1111/1755-6724.12308_44
The geochemistry and oxidation state of podiform chromitites from the mantle section of the Oman ophiolite: A review
Rollinson, Hugh and Adetunji, Jacob 2015. The geochemistry and oxidation state of podiform chromitites from the mantle section of the Oman ophiolite: A review. Gondwana Research. 27 (2), pp. 1-12. https://doi.org/10.1016/j.gr.2013.07.013
Determination of Fe3+/ΣFe ratios in chrome spinels using a combined Mössbauer and single-crystal X-ray approach: application to chromitites from the mantle section of the Oman ophiolite
Lenaz, Davide, Adetunji, Jacob and Rollinson, Hugh 2014. Determination of Fe3+/ΣFe ratios in chrome spinels using a combined Mössbauer and single-crystal X-ray approach: application to chromitites from the mantle section of the Oman ophiolite. Contributions to Mineralogy and Petrology. 167 (958), pp. 1-17. https://doi.org/10.1007/s00410-013-0958-2