D26 < 20190528112725-540260 > on D26 pub determined by XRF procedures of Takei (2002) with XRF PANalytical PW2400

measured value uncertainty unit
[SiO2] 49.92 %
[TiO2] 1.4 %
[Al2O3] 15.25 %
[Fe2O3T] 13.7 %
[MnO] 0.22 %
[MgO] 7.29 %
[CaO] 9.3 %
[Na2O] 3.0 %
[K2O] 0.37 %
[P2O5] 0.14 %
[LOI] -0.28 %
total 100.4 %
[Cr] 187.0 ppm
[Ni] 187.0 ppm
tables:
  • Table 2. Major elements, trace elements and U-Th-Ra data for Lake Nyos and representative Mt.Cameroon lavas of Aka, F. T. (2008) U-series dating of Lake Nyos maar basalts, Cameroon (West Africa): Implications for potential hazards on the Lake Nyos dam, Journal of Volcanology and Geothermal Research, 176, 212-224. more
  • Table 1. CIPW norms and oxygen isotopic composition of Lake Nyos basalts and granite quartz separates of Aka, F. T. (2008) U-series dating of Lake Nyos maar basalts, Cameroon (West Africa): Implications for potential hazards on the Lake Nyos dam, Journal of Volcanology and Geothermal Research, 176, 212-224. more