 | | Journal (article/letter/editorial) | | alteration in kimberlites and carbonatites: the role of kassite, CaTi2O4(OH)2 T. Martins · A. R. Chakhmouradian...of perovskite replacement in these samples is kassite, a monoclinic (space group P21/a) polymorph of...observed. The electron-microprobe analyses of kassite give formulae close to the stoichiometric composition...Progressive Ca leaching leads to replacement of kassite by anatase + calcite, which are also commonly observed...calcite intergrowths that can be easily mistaken for kassite (cafetite) based on electron-microprobe data. Thermodynamic |  | Chakhmouradian, A. R., Cooper, M. A., Medici, L., Abdu, Y. A., Shelukhina, Y. S. (2015) Anzaite-(Ce), a new rare-earth mineral and structure type from the Afrikanda silicocarbonatite, Kola Peninsula, Russia. Mineralogical Magazine, 79 (5) 1231-1244 doi:10.1180/minmag.2015.079.5.17 | Journal (article/letter/editorial) | | structure type from the Afrikanda silicocarbonatite, Kola Peninsula, Russia A.R. CHAKHMOURADIAN1,*, M...Petersburg State University, St Petersburg, 199034, Russia [Received 17 September 2014; Accepted 15 February...Ce3+ 4 Fe Ti6O18(OH)2, is a new, structurally complex mineral occurring as scarce minute crystals in...silicocarbonatites in the Afrikanda alkali-ultramafic complex of the Kola Peninsula, Russia. The mineral is a...Anatoly N. Zaitsev of St Petersburg State University (Russia) and The Natural History Museum (UK), in recognition |  | | Journal (issue) | | 00 Minerals of the Afrikanda AlkalineUltrabasic Complex, Kola Peninsula, Russia Igor V. Pekov & Anna...Mineralogy, Moscow State University Moscow, Russia Afrikanda is a small (7 km 2) alkaline-ultrabasic intrusion...the Kola Peninsula (Russia), about 40 km south-west of famous Khibiny alkaline complex. It is a Caledonian...Caledonian circular complex consisting of olivinites, pyroxenites (including their nepheline- and feldspar-bearing...calcite-perovskitemagnetite-pyroxene rocks. The Afrikanda complex, discovered in 1917 by Russian geologist N |  | | Journal (article/letter/editorial) | | Institute KSC RAS, 14 Fersmana St., Apatity, 184200, Russia R. H. Mitchell (&) Department of Geology, Lakehead...Na–Nb–Zr-rich titanite found at the Khibina peralkaline complex (Liferovich and Mitchell, submitted). The latter...Paragenesis 1 Afrikanda massif, Kola Alkaline Calcite-apatite-pyroxene Province, Russia pegmatoid 2 ... Khibina massif, Kola Alkaline Province, Russia Zeolite vein cutting through 9.0 feldspatoid syenite...lamprophyre groundmass Pilanesberg peralkaline complex, Lujavrite subjected to South Africa autometasomatic |  | Shaikh, Azhar M., Patel, S.C., Ravi, S., Behera, D., Pruseth, K.L. (2017) Mineralogy of the TK1 and TK4 ‘kimberlites’ in the Timmasamudram cluster, Wajrakarur Kimberlite Field, India: Implications for lamproite magmatism in a field of kimberlites and ultramafic lamprophyres. Chemical Geology, 455. 208-230 doi:10.1016/j.chemgeo.2016.10.030 | Journal (article/letter/editorial) | | phlogopite, spinel and fluorapatite in TK4 indicate a complex evolutionary AC CE history of the magma. Close...et al., 2007). Since these rocks are generally complex and hybrid in nature with varying amounts of crustal...ite (TTG) gneisses of the Peninsular Gneissic Complex, Proterozoic platformal sedimentary basins, and...the east by the Krishna Province, which shows a complex tectonothermal NU evolution during the Palaeo-...(?) Ma, overlies the ED Peninsular Gneissic Complex in the eastern part of the EDC (review in Matin |  | | Journal (article/letter/editorial) | | pegmatites found elsewhere (e.g., Murun and Khibina in Russia: Evdokimov and 95 Analytical methods Fig. 2...few known localities include Burpala (Siberia, Russia), Strange Lake (QueÂbec ± Labrador, Canada), and...ultrapotassic syenites and pegmatites of the Malyi Murun complex in Siberia (Mitchell and Vladykin 1993; Chakhmouradian...Ca±Ti silicate (Fig. 9b). The crystals exhibit a complex zonation pattern arising from variations in Sr...carbonates, whose small size and occurrence in complex intergrowths preclude their unambiguous identi®cation |  | | Journal (volume) | | barytolamprophyllite series minerals from IujaVritemalignite complex of burbankite group and mineral composition of...RAS Bld. 18/2 Leninsky Prospekt, Moscow, 117071, Russia phone (7095) 9520067; fax (7095) 9524850...mineral@fmm.ru website: www.fmm.ru Printed in Russia Ocean Pictures Ltd 4871 S. Dudley St., Littleton...lite series minerals from lujavritemalignite complex of Khibiny massif . . . . . . . . . . . . . . ...Physics RAS, Chernogolovka, Moscow Oblast, chukanov@icp.ac.ru The complex (electron microprobe, Xray diffraction |
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