Samples for biotite inclusion analysis are a megacryst from the San Martino laccolith and a xenocryst
from an Orano dyke; the xenocryst
is presumed to have been captured from the partially molten Monte Capanne pluton that the dyke intruded.
Lavas from the northwestern knoll are fresh, slightly ollvine-phyric lavas with abundant vesicles and rare, partially resorbed plagioclase xenocrysts
The dyke contains abundant large (up to at least 9 cm) phenocrysts and xenocrysts
in addition to a wide variety of xenoliths that include granulite, dunite, lherzolite, werhlite, harzburgite, and pyroxene peridotite (Ross et al.
Like garnets, chromite xenocrysts
are known to have formed co-genetically with diamonds.
Unit D is a relatively fresh, mostly dense but locally scoriaceous, porphyritic trachyandesite with ten to fifteen percent large plagioclase xenocrysts
2004, Discovery of Archean continental and mantle fragments inferred from xenocrysts
in komatiites, the Belingwe greenstone belt, Zimbabwe: Geology, v.