| Macdonald, R., Bagiński, B., Leat, P.T., White, J.C., Dzierżanowski, P. (2011) Mineral stability in peralkaline silicic rocks: Information from trachytes of the Menengai volcano, Kenya. Lithos, 125 (1) 553-568 doi:10.1016/j.lithos.2011.03.011 | Journal (article/letter/editorial) | rocks: Information from trachytes of the Menengai volcano, Kenya R. Macdonald a,b,⁎, B. Bagiński a, P.T....Available online 17 March 2011 Keywords: Menengai volcano Peralkaline trachytes and rhyolites Mineral stability...silicaoversaturated trachytes from the Menengai volcano, Kenya Rift Valley. The dominant phenocryst assemblage...other settings, e.g. ocean islands such as Terceira, Azores (Self and Gunn, 1976) and Socorro Island,...(EMPA) data for trachytes of the Menengai caldera volcano, Kenya Rift Valley, with the specific aims of: (i) | | | Journal (article/letter/editorial) | located, along with the peralkaline trachyte caldera volcano Longonot, within an area of 50 km 30 km, a much...lies the peralkaline trachyte---phonolite caldera volcano Suswa (Fig. 1). The Greater Olkaria Volcanic Complex...natural pantelleritic obsidian from the Fantale volcano, Ethiopia (Lacroix, 1930) is also shown. the samples...and contains 5% phenocrysts of alkali feldspar, riebeckite---arfvedsonite, aenigmatite, biotite, ilmenite...phenocryst assemblage, containing fluorite and lacking riebeckite and aenigmatite. All experiments were conducted |
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