Table 2.

Selected electron microprobe analyses for clinopyroxene found in lavas, scorias and pumices of the 2002–2003 Stromboli eruption – the recent materials erupted by Stromboli volcano

TypeRecent lavasScoriasPumices
SampleSt53St53St61St61St51St51St51St59St59St62St62St64St64
Sitecorerimcorerimcoreintrimcorerimcorerimcorerim
Analysis no.12345678910111213
DateDecember 2002December 2002February 2003February 2003June 2001June 2001June 2001December 2002December 2002April 2003April 2003April 2003April 2003
SiO250.850.753.851.350.450.050.652.651.650.151.350.650.5
TiO20.900.970.010.830.850.620.970.011.041.190.500.680.80
Al2O33.393.472.293.262.894.633.103.923.443.304.045.245.22
FeOT9.468.933.118.429.554.928.965.318.7911.55.224.775.30
MgO14.114.317.214.714.515.714.716.314.813.815.914.714.9
CaO20.621.522.721.921.022.621.622.821.519.722.523.423.4
Na2O0.370.37n.d.0.33n.d.n.d.n.d.n.d.n.d.0.35n.d.n.d.n.d.
Total99.7100.599.1100.899.298.6100.0101.0101.2100.199.599.3100.2
Wo0.380.390.420.390.390.390.390.390.390.360.400.400.40
En0.390.400.470.410.410.440.410.440.410.390.440.400.41
Fs0.140.120.050.110.140.060.130.070.130.160.070.070.07
  • T=Total iron as FeO; n.d.=not detected.