Ml. Tolstykh et al., Chemical composition, trace elements, and volatile components of melt inclusions in minerals from andesites of the Shiveluch volcano, Kamchatka, GEOCHEM INT, 38, 2000, pp. S123-S132
Various types of inclusions have been studied in eight samples of andesites
from the Shiveluch volcano. The glass composition of melt inclusions hoste
d in plagioclase, amphibole, and orthopyroxene differ from bulk rock compos
itions (57-61 wt % SiO2) and correspond to the dacite, rhyodacite, and rhyo
lite (65-79 wt % SiO2) with low TiO2, MgO, FeO, and CaO contents and a wide
range of K2O contents (1.9-6.5 wt %).