 | | Journal (article/letter/editorial) | | Sistefjell syenite intrusion, Dronning 18 Maud Land,Antarctica and surrounding low- O lavas Chris Harris...the largest Mesozoic pluton in western Dronning Maud Land. The main intrusive phase is a syenite consisting...group of nunataks situated in western Dronning Maud Land. The Sistefjell syenite intrusion (73°20' south...large-scale tectonic features in western Dronning Maud Land and is thought to be a major inactive rift system...the continuation of the East African Rift into Antarctica (Grantham and Hunter 1991). The two other plutons |  | | Journal (article/letter/editorial) | | studies of syenites from the Yamato Mountains, East Antarctica: Implications for the origin of syenitic magmas...metamorphism in the Yamato Mountains of East Antarctica. The area has been interpreted as part of a Cambrian...alkali basalt dikes widely occurring in East Antarctica. Such geochemical features are distinct from...analogy to posttectonic alkaline mafic dikes in Antarctica, it is proposed that the syenites were generated...of some post-tectonic alkaline dikes in East Antarctica, with their sources being the continental lithospheric |  | | | | associated with the Straumsvola Tvora alkaline plutons, Dronning Maud Land, Antarctica and their association...ACT Jurassic dykes of western Dronning Maud Land (Antarctica) form a minor component of the Karoo large...elsewhere in the Karoo (southern Africa and Dronning Maud Land). Later-stage (170 Ma) felsic (phonolite comendite)...now represented by western Dronning Maud Land in East Antarctica (Marsh et al., 1997; Le Gall et al....western Dronning Maud Land (Fig. 1). The syenites range from Si-undersaturated (Straumsvola pluton) to Si-oversaturated |  | Jeffery, A. J., Gertisser, R., Jackson, R. A., O'Driscoll, B., Kronz, A. (2016) On the compositional variability of dalyite, K2ZrSi6O15: a new occurrence from Terceira, Azores. Mineralogical Magazine, 80 (4) 547-565 doi:10.1180/minmag.2016.080.018 | Journal (article/letter/editorial) | | Makhotko (1982) identified dalyite in the Murun Complex, Siberia, Russia, also providing additional quantitative...cross-cuts the nepheline syenites of the Straumsvola Complex, Antarctica. In 1988, an enstatite-sanidinephlogopite...ogopite lamproite in south-eastern Spain was reported to contain the mineral’s first known occurrence...Salitre–Serra Negra carbonatite-alkaline igneous complex, Brazil (Mariano and Francis, 1989; Mariano and...identified in the Strange Lake peralkaline granite complex, Canada, and noted to have nucleated heterogeneously |  | | Journal (article/letter/editorial) | | nepheline syenite to granite magmas in the Ditrău Complex, Romania: evidence from O‑, Nd‑, Sr‑ and Pb‑isotopes...Abstract The Ditrău Complex of the Carpathian Mountains in Romania is a Mesozoic igneous complex (~ 200–230 Ma)...continental rift environment. Felsic rocks of the Ditrău Complex consist of nepheline syenite, syenite, quartz syenite...quartz monzonites and granites. Keywords Ditrău complex · Oxygen isotopes · Radiogenic isotopes · Crustal...silica-oversaturated units in the same alkaline complex (e.g., Brotzu et al. 1997). Different models have |  | | Journal (article/letter/editorial) | | pegmatite: a case study from the Ambohimirahavavy complex, Madagascar GUILLAUME ESTRADE *, STEFANO SALVI...pegmatitic granites from the Cenozoic Ambohimirahavavy complex, and assess the magmatic conditions required to...Introduction EUDIALYTE-group minerals (EGM) are complex Na-Ca-Zr-cyclosilicates with the general formula...1180/minmag.2017.081.053 are incorporated into complex Na-K-Ca-Zr-silicates, rich in volatiles (Cl, F...in the Ilímaussaq complex, the Norra Kärr complex in Sweden and the Kipawa complex in Canada; Goodenough |  | | Journal (article/letter/editorial) | | QTOB by the Shangdan Suture Zone and its CE eastern extension. Paleozoic magmatic intrusions are widespread...Orogen along the northern margin of the SCB is the eastern extension of the Qinling NU Orogen, which is...Erlangping Group, the Qinling Group, the Guishan Complex, and the Nanwan flysch (Liu et al., 2008; Ratschbacher...is mainly richterite (Ma et al., 2005). Zircon, apatite, ilmenite, monazite, and sphene occur as accessory...nepheline syenite (white foyaite) from the Pilanesberg Complex, South Africa. Chemical NU Geology 455,166–181 |  | Zhu, Yu-Xiang, Wang, Lian-Xun, Xiong, Qi-Hui, Ma, Chang-Qian, Zhang, Xin, Zhang, Chao, Ahmed, Hafizullah Abba (2020) Origin and evolution of ultrapotassic intermediate magma: The Songxian syenite massif, Central China. Lithos, 366. 105554pp. doi:10.1016/j.lithos.2020.105554 | Journal (article/letter/editorial) | | western SQB and NQB but are rare in the S-NCC and eastern NQB (Fig. 1a). They are composed of a number of...potassium-rich oikocryst. Accessory minerals, such as apatite, zircon, magnetite and titanite and secondary kaolin...minerals (~5 vol%) mainly include zircon, magnetite, apatite, and titanite. Based f on different optical features...common lead contamination together with a al complex Pb loss. rn Zircons from alkali-feldspar syenite...microgranular enclaves (MMEs) from the Laoniushan complex of S-NCC display initial 87 Sr/86 Sr ratios of |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | and O, OH, F, and H20 Groups and Other Anions or Complex and Some Beryllosilicates 1020 1061 1106 1116...biological sphere such as the calcium phosphates (apatite) of bones and teeth, the carbonate Species typical...followed in this edition. The many and often very complex silicate minerals are here classified for the first...may be less for simple structures or more for complex ones. Typically, the projection is down the shortest...but ant predomin the to refers label The true. complex structures this may not be by species in a site |
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