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A geometallurgical approach to enhance the gravity beneficiation of a strontium deposit

Autor: S. B. Blancher, T. Wallmach, A. Perroton, G. Rameau

Publikováno v: Journal of the Southern African Institute of Mining and Metallurgy, Volume: 120, Issue: 2, Pages: 131-138, Published: FEB 2020

Mineralogical analyses and QEMSCAN® process simulation were used to characterize a heavy mineral concentrate of celestine originating from the Beni Mansour deposit in Algeria, and to model a gravity separation process to remove Sr-, Ba-, and Ca-bear

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88e073beccc0c6c23ac956e4d6d505ba
https://doi.org/10.17159/2411-9717/896/2020

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In-situ analyses of carbonaceous matter in manganiferous black shales: Analytical proxies and implication for ore processing

Autor: Anne-Claire Salaün, T. Wallmach, Mohammed Boussafir, V. Delarue, S. Lafon, R. Wirth, Céline Rodriguez, A. Schreiber, G. Dreux, Beate Orberger

Publikováno v: Minerals Engineering
Minerals Engineering, Elsevier, 2018, 125, pp.83-93. ⟨10.1016/j.mineng.2018.05.019⟩
Minerals Engineering, Elsevier, 2018, 125, pp.83-93. 〈10.1016/j.mineng.2018.05.019〉

International audience; Carbonaceous matter is generally known to be problematic for metal recovery during metallurgical processing of black shales. In particularly, metal upgrading during beneficiation prior to (bio-) hydrometallurgical and/or pyrom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5cfb70d9fd8f6d3e2f531de7f52493fa
https://gfzpublic.gfz-potsdam.de/pubman/item/item_3254894

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Origin of pseudotachylite in the lower Witwatersrand Supergroup, Vredefort Dome (South Africa): constraints from metamorphic studies

Autor: T. Wallmach, Wolf Uwe Reimold, Roger L. Gibson

Publikováno v: Tectonophysics. 283:241-262

Small, sub-millimetre to centimetre thick, pseudotachylite veins in metapelitic rocks of the lower Witwatersrand Supergroup in the collar of the Vredefort Dome are recrystallized to a biotite±cordierite paragenesis, indicating the attainment of lowe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::88cc936a1e089018e1b5bc7d995da054
https://doi.org/10.1016/s0040-1951(97)00072-3

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Low pressure-high temperature metamorphism in the Vredefort Dome, South Africa: Anticlockwise pressure-temperature path followed by rapid decompression

Autor: R. L. Gibson, T. Wallmach

Publikováno v: Geological Journal. 30:319-331

Pelitic metasediments of the Witwatersrand Supergroup in the Vredefort Dome contain textural evidence for a two-stage metamorphic history. The pressure-temperature (P-T) path derived for the rocks indicates that they were subjected to a high geotherm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::449b60f7132e818df15548d3c9605b1a
https://doi.org/10.1002/gj.3350300311

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Retrogressive hydration of calc-silicate xenoliths in the eastern Bushveld complex: evidence for late magmatic fluid movement

Autor: C. J. Hatton, R.L. Gibson, T. Wallmach, S. A. de Waal

Publikováno v: Journal of African Earth Sciences. 21:633-646

Two calc-silicate xenoliths in the Upper Zone of the Bushveld complex contain mineral assemblages which permit delineation of the metamorphic path followed after incorporation of the xenoliths into the magma. Peak metamorphism in these xenoliths occu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e59378088cdb9a19d5ea2d68f4834dd4
https://doi.org/10.1016/0899-5362(95)00102-6

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Geology of the ultrabasic to basic Uitkomst complex, eastern Transvaal, South Africa: an overview

Autor: Christoph Gauert, S. A. de Waal, T. Wallmach

Publikováno v: Journal of African Earth Sciences. 21:553-570

The Uitkomst complex in eastern Transvaal, South Africa, is a mineralized, layered ultrabasic to basic intrusion of Bushveld complex age (2.05–2.06 Ga) that intruded into the sedimentary rocks of the Lower Transvaal Supergroup. The complex is situa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27cd17c111f93bc871dc52ab290865c3
https://doi.org/10.1016/0899-5362(95)00112-3

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