Minissale, S., Zanetti, A., Tedesco, D., Morra, V. and Melluso, L. (2019) The Petrology and Geochemistry of Nyiragongo Lavas of 2002, 2016, 1977 and 2017 AD, and the Trace Element Partitioning between Melilitite Glass and Melilite, Nepheline, Leucite, Clinopyroxene, Apatite, Olivine and Fe-Ti Oxides: A Unique Scenario. Lithos, 332-333, 296-311.
https://doi.org/10.1016/j.lithos.2019.02.023

has been cited by the following article:

• TITLE: Magmatic Evolution of the Western Branch of the East African Rift System Melts: Evidence by Silicate Melt Inclusions, Rock Petrography and Geochemistry of the Nyiragongo 1977 and 2002 Lavas in DRC

  AUTHORS: Douxdoux Kumakele Makutu

  KEYWORDS: Nyiragongo Lava, Petrography, Geochemistry, SMIs, LA-ICP-MS, Rifting, Magma Evolution

  JOURNAL NAME: Open Journal of Geology, Vol.13 No.5, May 31, 2023

  ABSTRACT: Nyiragongo volcanic eruptions of 1977 and 2002 emitted silica-undersaturated lavas named melilite-nephelinites with microlithic to sub-porphyritic textures, and consisted of olivine, clinopyroxene (augite), phlogopite, melilite, magnetite, and rare plagioclases. This melilite-nephelinite as an evolved rock, shows low SiO2 (38.40 - 39.52 wt%) and MgO (3.10 - 4.01 wt%), and relatively high FeOt (13.76 - 14.10 wt%), Al2O3 (15.01 - 16.48 wt%), CaO (11.00 - 12.29 wt%) and Na2O + K2O (10.34 - 11.85 wt%). Unlike LA-ICP-MS on silicate melt inclusions (SMIs) hosted in augite show a pristine melt of picrobasaltic (low Ti-picrite) rock poor in SiO2 (31.14 - 32.26 wt%), FeOt (2.19 - 2.79 wt%), Al2O3 (8.01 - 9.57 wt%), and Na2O + K2O (2.34 - 3.05 wt%), while enriched in MgO (20.27 - 28.63 wt%), and CaO (24.95 - 33.17 wt%). The sums (∑REEs) for lavas and SMIs are ranging 712 - 799 and 43 - 119 ppm respectively. REE contracted multi-element patterns showed a W-feature for most lavas except for SMIs. High Rb/Sr, and low Ba/Rb, Zr/Nb, and Sm/Hf ratios of lavas suggest a phlogopite-rich source of materials.