| Pekov, I. V., Zubkova, N. V., Chukanov, N. V., Sharygin, V. V., Pushcharovsky, D. Yu. (2009) Crystal chemistry of delhayelite and hydrodelhayelite. Doklady Earth Sciences, 428 (1) 1216-1221 doi:10.1134/s1028334x09070393 | Journal (article/letter/editorial) | samples from alkaline lavas of the Ol Doinyo Len gai volcano in Tanzania is the content of Si increased...we made, like in the delhayelite from the Ol Doinyo Lengai vol cano, is close to four atoms per formula...orthoclase, nepheline, sodalite, aegirine, lamprophyllite, lomo nosovite, fenaksite, villiaumite, etc...10—Khibiny massif, Kola Peninsula; 8, 9—Ol Doinyo Lengai, Tanzania; 11—Bultfontein, South Africa. References: | | Filina, Maria I., Aksenov, Sergey M., Sorokhtina, Natalia V., Chukanov, Nikita V., Kononkova, Natalia N., Belakovskiy, Dmitriy I., Britvin, Sergey N., Kogarko, Lia N., Chervonnyi, Alexandr D., Rastsvetaeva, Ramiza K. (2019) The new mineral fluorbarytolamprophyllite, (Ba,Sr,K)2[(Na,Fe2+)3TiF2][Ti2(Si2O7)2O2] and chemical evolution of lamprophyllite-group minerals in agpaitic syenites of the Kola Peninsula. Mineralogy and Petrology, 113 (4) 533-553 doi:10.1007/s00710-019-00664-0 | Journal (article/letter/editorial) | Fe2+)3TiF2] [Ti2(Si2O7)2O2] and chemical evolution of lamprophyllite-group minerals in agpaitic syenites of the...syenites containing up to 25 vol.% lamprophyllite-group minerals (lamprophyllite, fluorlamprophyllite, barytolamprophyllite...and ferripyrophyllite. Three generations of lamprophyllite-group minerals can be distinguished based on...fluorlamprophyllite. It represents the early generation of lamprophyllite-group minerals (LGM) and forms brown prismatic...Russian Academy of Sciences, Chernogolovka, Moscow region 142432, Russia 5 Fersman Mineralogical Museum |
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