Crystal Chemistry of Three Volcanic K-rich Nepheline Samples From Oldoinyo Lengai, Tanzania and Mount Nyiragongo, Eastern Congo, Africa
Natural nepheline (Nph) samples are intermediate members of solid solutions that extend from the pure Na end-member Na[AlSiO4] to the pure K end-member K[AlSiO4] (=kalsilite, Kls). We examined two volcanic nepheline (ideally, K2Na6[Al8Si8O32] or Nph0.75Kls0.25) samples from Oldoinyo Lengai, Tanzania...
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| Natura: | Articolo |
| Lingua: | English |
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Frontiers Media S.A.
2018-10-01
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| Serie: | Frontiers in Earth Science |
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| Accesso online: | https://www.frontiersin.org/article/10.3389/feart.2018.00155/full |