 | | Journal (article/letter/editorial) | | can be readily distinguished from its dimorph cafetite (space group P21/n) based on the presence of strong...2.79, 2.57, 2.56 and 1.91 Å, characteristic of cafetite, are not observed. The electron-microprobe analyses...intergrowths that can be easily mistaken for kassite (cafetite) based on electron-microprobe data. Thermodynamic...late-stage hydrothermal paragenesis at Afrikanda in the Kola Peninsula, Russia (Kukharenko et al. 1965). Subsequently...(2004) showed that kassite is polymorphous with cafetite [CaTi2O5(H2O)], which was also discovered in a |  | | 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 |  | 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 (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 |
|
Afrikanda complex, Murmansk Oblast, Russia