 | Feneyrol, J., Ohnenstetter, D., Giuliani, G., Fallick, A. E., Rollion-Bard, C., Robert, J.-L., Malisa, E. P. (2012) EVIDENCE OF EVAPORITES IN THE GENESIS OF THE VANADIAN GROSSULAR 'TSAVORITE' DEPOSIT IN NAMALULU, TANZANIA. The Canadian Mineralogist, 50 (3) 745-769 doi:10.3749/canmin.50.3.745 | Journal (article/letter/editorial) | | GENESIS OF THE VANADIAN GROSSULAR ‘TSAVORITE’ DEPOSIT IN NAMALULU, TANZANIA Julien FENEYROL and Daniel OHNENSTETTER§...Dar-es-Salaam, Tanzania Abstract The Namalulu tsavorite (vanadian grossular up to 0.80 wt.% V2O3) deposit in northeastern...northeastern Tanzania occurs in metasomatized graphitic gneiss overlain by a dolomitic marble unit. These...V2O3), V-bearing rutile (up to 1.9 wt.% V2O3), and graphite. This rock is affected by calcic metasomatism...precipitating calcite and mobilizing the elements for tsavorite crystallization in quartz-calcite veins. The dolomitic |  | Giuliani, Gaston, Dubessy, Jean, Ohnenstetter, Daniel, Banks, David, Branquet, Yannick, Feneyrol, Julien, Fallick, Anthony E., Martelat, Jean-Emmanuel (2018) The role of evaporites in the formation of gems during metamorphism of carbonate platforms: a review. Mineralium Deposita, 53 (1) 1-20 doi:10.1007/s00126-017-0738-4 | Journal (article/letter/editorial) | | interactions, or sulphurous fluids (ruby, garnet tsavorite, zoisite tanzanite and lapis-lazuli) or molten...grossular, i.e. tsavorite, and vanadium-rich zoisite, called tanzanite, from Tanzania, Kenya and Madagascar...Afghan emeralds, Asian ruby-bearing marbles, tsavorite and tanzanite in East Africa (Groat 2014) and...mine, Luc Yen mining district, Vietnam, 2 × 1 cm. e Nodule, rough and cut of tsavorite from the Tsavolite...Tsavolite mine, Mangare mining district, Voi region, Kenya, diametre of the nodule (on the left) ~3.5 cm. f |
|
