| 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...Engineering, University of Dar Es Salaam, Dar Es Salaam, Tanzania open system with carbonate–silicate immiscibility...Liquid immiscibility · Rift initiation · Hanang · Tanzania · East African Rift Introduction The East African | | | 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...compositions occur in forsterite macrocrysts and in diopside, nepheline, fluorapatite, Ti-andradite, and Ti-magnetite...globule ± daughter/trapped phases, represented by diopside, fluorapatite, Ti-andradite, and alumoåkermanite)...bubble ± daughter phases) are rare in diopside and Ti-andradite. Diopside and forsterite have trails of secondary | | 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... fluorophlogopite, melilite, olivine (Fo.60), diopside, nepheline, Ti-rich magnetite, fluorapatite, ...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 | | 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...as standards: albite (Na), orthoclase (K, Al), diopside and wollastonite (Mg, Ca, Si), chlorapatite (P | | | Journal (article/letter/editorial) | wollastonite and silicate magmas of Oldoinyo Lengai (Tanzania). Trace PT element partitioning of isovalent...differences between wollastonite and clinopyroxene (diopside) MA is the ratio between tetrahedral (T) and...T:O ratios are 3:2 for wollastonite and 1:1 for diopside (Thompson et al., 2016). In wollastonite, trace...undersaturated melt-carbonatite suites. AC We thank the Tanzania commission for science and technology (COSTECH)...of ijolite xenolith 10TL01 from Oldoinyo Lengai volcano. Abbreviations: Wo, wollastonite; Cpx, clinopyroxene; | | | 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 | | 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...content between 0.05 and 0.06 apfu Clinopyroxene Diopside and hedenbergite (≈QUAD), aegirine and Tschermak’s...samples contain at least some pyroxenes with a diopside component that exceeds 50 mol %, but especially...pyroxenes of the tephritic phonolites have the lowest diopside component. Olivine/basanitic nephelinites and | | Salnikova, Ekaterina B., Chakhmouradian, Anton R., Stifeeva, Maria V., Reguir, Ekaterina P., Kotov, Alexander B., Gritsenko, Yulia D., Nikiforov, Anatoly V. (2019) Calcic garnets as a geochronological and petrogenetic tool applicable to a wide variety of rocks. Lithos, 338. 141-154 doi:10.1016/j.lithos.2019.03.032 | Journal (article/letter/editorial) | for Mg (K, 250), andalusite for Al (K, 200), diopside for Si and Ca (K, 200 for RI both), albite...Zima complex is located in the Tulun district of the Irkutsk Region, southern Siberia (Russia). The intrusion...a sample of coarse-grained ijolite composed of diopside, garnet, nepheline and RI calcite distributed...pegmatoids, which comprise nepheline, garnet, diopside, phlogopite and apatite, with subordinate proportions...diameter) black euhedral crystals intergrown with diopside and nepheline (Fig. 1e; Gritsenko and Gerasimova | | | 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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