 | Zaitsev, A.N., Marks, M.A.W., Wenzel, T., Spratt, J., Sharygin, V.V., Strekopytov, S., Markl, G. (2012) Mineralogy, geochemistry and petrology of the phonolitic to nephelinitic Sadiman volcano, Crater Highlands, Tanzania. Lithos, 152. 66-83 doi:10.1016/j.lithos.2012.03.001 | Journal (article/letter/editorial) | | the phonolitic to nephelinitic Sadiman volcano, Crater Highlands, Tanzania A.N. Zaitsev a, b,⁎, M.A.W. Marks...inclusions Mineral stability fields Sadiman volcano a b s t r a c t Sadiman volcano is located in the Crater Highlands...Highlands area of northern Tanzania, which lies next to the western escarpment of the Gregory rift—a...the latter of which is the dominant variety at Sadiman. Nepheline + clinopyroxene + titanite ± perovskite...partly and complete crystallized inclusions. The Sadiman nephelinites crystallized under relatively oxidizing |  | | Journal (article/letter/editorial) | | lavas at early stage of rift initiation (Hanang volcano, North Tanzanian Divergence) Céline Baudouin1 ·...Lengai and Kerimasi volcanoes. Hanang volcano is the southernmost volcano in the North Tanzanian Divergence...the earliest stage of rift initiation. Hanang volcano erupted silica-undersaturated alkaline lavas with...andradite-schorlomite, titanite, apatite, and pyrrhotite. Lavas are low MgO-nephelinite with low Mg# and...Engineering, University of Dar Es Salaam, Dar Es Salaam, Tanzania open system with carbonate–silicate immiscibility |  | | Journal (article/letter/editorial) | | forsterite–phlogopite ijolites at Oldoinyo Lengai Volcano, Tanzania: study of melt inclusions V.S. Sekisova a...minerals of ijolite xenoliths at Oldoinyo Lengai Volcano. Melt inclusions with different phase compositions...addition, diopside contains sulfide inclusions (pyrrhotite ± chalcopyrite ± djerfisherite ± galena ± pentlandite)...the Gulf of Aden through Ethiopia, Kenya, and Tanzania, is divided into two large tectonic zones: Western...example, Oldoinyo Lengai, which is located in Tanzania, ~16 km south of Lake Natron, near the Crater |  | Sharygin, Victor V., Pekov, Igor V., Zubkova, Natalia V., Khomyakov, Alexander P., Stoppa, Francesco, Pushcharovsky, Dmitry Yu. (2013) Umbrianite, K7Na2Ca2[Al3Si10O29]F2Cl2, a new mineral species from melilitolite of the Pian di Celle volcano, Umbria, Italy. European Journal of Mineralogy, 25 (4) 655-669 doi:10.1127/0935-1221/2013/0025-2306 | Journal (article/letter/editorial) | | species from melilitolite of the Pian di Celle volcano, Umbria, Italy VICTOR V. SHARYGIN1,*, IGOR V. PEKOV2...groundmass mineral in melilitolite of the Pian di Celle volcano, Umbria, Italy. It forms rectangular, lamellar...structure, melilitolite, kamafugite, Pian di Celle volcano, Italy. 1. Introduction Institute of Geology...for Umbria, the region of Central Italy where its type locality, the Pian di Celle volcano, is situated...background content of H2O (0.03 The Pian di Celle volcano is a part of a Pleistocene kamafugite-carbonatite |  | | Journal (article/letter/editorial) | | Formation tuffs of the Rukwa Rift Basin, southwestern Tanzania L. Lawrence, C. Spandler, E.M. Roberts, H.L....Formation tuffs of the Rukwa Rift Basin, southwestern Tanzania, LITHOS (2020), https://doi.org/10.1016/j.lithos...occurring ~400 km beneath Ethiopia, Kenya and Tanzania, defined as the African superswell (Nyblade, 2011)...the Usangu Basin and Tukuyu Journal Pre-proof region of the Rungwe Volcanic Province (RVP) (Fig. 1b)...vent or source of appropriate age is known in the region for the NFT, which presents a further challenge |  | Sharygin, Victor V., Kamenetsky, Vadim S., Zaitsev, Anatoly N., Kamenetsky, Maya B. (2012) Silicate–natrocarbonatite liquid immiscibility in 1917 eruption combeite–wollastonite nephelinite, Oldoinyo Lengai Volcano, Tanzania: Melt inclusion study. Lithos, 152. 23-39 doi:10.1016/j.lithos.2012.01.021 | Journal (article/letter/editorial) | | combeite–wollastonite nephelinite, Oldoinyo Lengai Volcano, Tanzania: Melt inclusion study Victor V. Sharygin a...Introduction Oldoinyo Lengai is the only active volcano on the Earth erupting natrocarbonatite lava. This...southern crater that formed the major bulk of the volcano (Lengai I), whereas nephelinites of Lengai II characterize... Nasira, Dorobo) located on the slopes of the volcano are closely related to the Lengai II activity (Keller...approximately 50%. Delhayelite, perovskite, magnetite, pyrrhotite, sodalite, K-feldspar, Sr-bearing baryte, unidentified |  | | Journal (article/letter/editorial) | | apatite (0.7–0.9 wt% SO3), titanite, and rare pyrrhotite followed by clinopyroxene-plagioclase-sanidine...nepheline + S-poor apatite (<0.04 wt% SO3) + pyrrhotite followed by nosean and titanite. Noseanbearing...sodalite, silicate minerals, apatite, titanite, pyrrhotite, and bulk rock. We determined the phase assemblage...Central Sodalite-bearing phonolite Ol Doinyo Lengai Sadiman Nephelinite and Basanite Eifel Saghro 8 basanite...magma volume of 1 km3, whereas the Laacher See volcano erupted about 5 km3 of phonolitic magma (Bogaard |  | Braunger, S, Marks, M A W, Walter, B F, Neubauer, R, Reich, R, Wenzel, T, Parsapoor, A, Markl, G (2018) The Petrology of the Kaiserstuhl Volcanic Complex, SW Germany: The Importance of Metasomatized and Oxidized Lithospheric Mantle for Carbonatite Generation. Journal of Petrology, 59 (9) 1731-1762 doi:10.1093/petrology/egy078 | Journal (article/letter/editorial) | | 2005; Brooker & Kjarsgaard, 2011). The source region for most carbonatites and associated alkaline rocks...1990; 1991). The original size of the Kaiserstuhl volcano during its active period is difficult to reconstruct...(Fig. 3c). Occasionally, magnetite, pyrite and pyrrhotite can be observed. Titanite and apatite are ubiquitous...reconstruct the petrological evolution of this composite volcano. Depth of emplacement The only means to estimate...(2002) confirm the lithospheric mantle as the source region, but cannot exclude an asthenospheric contribution |  | | Journal (volume) | | of Szeged On the cover: Map of the Carpathian region with type localities of new mineral species, rocks...History of mineralogy: The role of the Carpathian region in the 18th century..............................beneath Eyjafjallajökull volcano, and corresponding inflation of the volcano, a lateral eruption started...evolved FeTi-basalts of the neighbouring Katla volcano (MgO: 4.5-5.0%). During the historical period Katla...basalt (similar in composition to those of Katla volcano) and a dacitic melt, possibly left-over from the |
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