 | | Journal (article/letter/editorial) | | lanthanide mineralization at the Buru carbonatite centre, Western Kenya I. O. ONUONGA1,* AND P. BOWDEN2...France 2 ABSTR ACT The Tertiary (22 Ma) carbonatite centre at Buru hill is located towards the eastern end...rift, western Kenya. As revealed by geochemistry and petrology of drill core samples, the Buru centre ranges...Mineralogically the lateritic cover of the Buru carbonatite centre is characterized by goethite, hematite...three of the Buru drill cores reveal significant deviations from primary igneous carbonatite values suggesting |  | | Journal (article/letter/editorial) | | Peralkaline syenite autoliths from Kilombe volcano, Kenya Rift Valley: Evidence for subvolcanic interaction...occurrences in Kenya. © 2006 Elsevier B.V. All rights reserved. Keywords: Syenite; Carbonatite; Kilombe; Kenya...Kenya rift valley; Ce-anomaly; REE–fluorcarbonate ⁎ Corresponding author. Fax: +39 0722304245. E-mail...Lithos 91 (2006) 373–392 1. Introduction Within the Kenya Rift Valley, trachytes are important components...Fig. 1. Location of the Kilombe volcano in the Kenya Rift Valley. F. Ridolfi et al. / Lithos 91 (2006) |  | | Journal (article/letter/editorial) | | ubiquitous in REE-rich environments such as carbonatite (Ngwenya 1994, Zaitsev et al. 1998, Onuonga...autoliths from the Kilombe volcano (Rift Valley, Kenya), associated with Fe- and P-rich phyllosilicate...supergene lanthanide mineralization at the Buru carbonatite (Kenya) and consider that in such a context synchysite...fluorocarbonate in calcite carbonatite hydrothermal veins of the Tundulu carbonatite complex in Malawi (Ngwenya...Hydrothermal REE mineralization in the Amba Dongar carbonatite complex, Gujarat, India. Canadian Mineralogist |  | Ruberti, E., Enrich, G. E.R., Gomes, C. B., Comin-Chiaramonti, P. (2008) HYDROTHERMAL REE FLUOROCARBONATE MINERALIZATION AT BARRA DO ITAPIRAPUA, A MULTIPLE STOCKWORK CARBONATITE, SOUTHERN BRAZIL. The Canadian Mineralogist, 46 (4) 901-914 doi:10.3749/canmin.46.4.901 | Journal (article/letter/editorial) | | AT BARRA DO ITAPIRAPUÃ, A MULTIPLE STOCKWORK CARBONATITE, SOUTHERN BRAZIL Excelso RUBERTI§, Gaston E.R...stages of the Early Cretaceous alkaline rock – carbonatite magmatism of the Ponta Grossa Arch Province....conditions, carbonatite, Barra do Itapirapuã, Brazil. Sommaire Les venues de carbonatite du complexe...bastnäsite-(Ce), conditions hydrothermales, carbonatite, Barra do Itapirapuã, Brésil. § E-mail address:...fluorocarbonates are important REEbearing minerals in many carbonatite occurrences, and commonly occur in late magmatic |  | Giovannini, Arthur L., Bastos Neto, Artur C., Porto, Claudio G., Pereira, Vitor P., Takehara, Lucy, Barbanson, Luc, Bastos, Pedro H.S. (2017) Mineralogy and geochemistry of laterites from the Morro dos Seis Lagos Nb (Ti, REE) deposit (Amazonas, Brazil) Ore Geology Reviews, 88. 461-480 doi:10.1016/j.oregeorev.2017.05.008 | Journal (article/letter/editorial) | | laterites formed by the weathering of siderite carbonatite. This iron-rich lateritic profile (>100 m in...concentrated to potentially economic levels in carbonatite and alkali-silicate igneous rocks and their weathering...Lagos deposit, associated with the Seis Lagos Carbonatite Complex (Issler and Silva, 1980), is located...being the only one associated with siderite carbonatite. To our knowledge, the Morro dos Seis Lagos deposit...the type of metal, associated with siderite carbonatite. Regardless its economic importance and geological |
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