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Article dans une revue

Lithostratigraphic and structural controls of 'tsavorite' deposits at Lemshuku, Merelani area, Tanzania

Abstract : The first study of the Lemshuku ‘tsavorite' mining district is presented. From bottom to top, the lithostratigraphic column corresponds to a metasedimentary sequence composed of quartzite, fine-grained graphitic gneiss, kyanite-graphite gneiss, biotite-almandine gneiss, metasomatized graphitic gneiss and dolomitic marble. ‘Tsavorite' occurs in quartz veins and rarely as nodular concretions. Two factors control mineralization: (1) lithostratigraphy, with ‘tsavorite' in association with pyrite and graphite confined to quartz veins within the metasomatized graphitic gneiss; and (2) structure, with the mineralized veins characteristically controlled by tight isoclinal folds associated with shearing.
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https://hal-brgm.archives-ouvertes.fr/hal-00563709
Contributeur : Marielle Arregros <>
Soumis le : lundi 7 février 2011 - 11:06:38
Dernière modification le : mardi 9 juin 2020 - 15:40:03

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Julien Feneyrol, Gaston Giuliani, Daniel Ohnenstetter, Elisabeth Le Goff, Elias P.J. Malisa, et al.. Lithostratigraphic and structural controls of 'tsavorite' deposits at Lemshuku, Merelani area, Tanzania. Comptes Rendus Géoscience, Elsevier Masson, 2010, 342 (10), pp.778-785. ⟨10.1016/j.crte.2010.06.003⟩. ⟨hal-00563709⟩

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