Green, "The mineralogy, geochemistry and origin of lherzolite inclusions in Victorian basanite
," Geochimica et Cosmochimica Acta, vol.
Bowie glass and whole-rock analyses span a wide range of compositions, from basanite
to near-trachyte, and cover the entire compositional range for the Pratt--Welker and other Gulf of Alaska seamount chains (Fig.
Glass in the Baarley xenoliths has three different origins: infiltration of an early host melt different in composition from the erupted host basanite
; partial melting of amphibole; reaction of either of these melts with xenolith minerals.
Based on the chemical analysis, they are classified into dominant alkali olivine basalts and basanites
with minor olivine tholeiites.
4c and d).The volcanics in Bhm where least altered are petrographically basanite
and alkali- basalt contain phenocrysts of olivine and augite with a groundmass consisting of plagioclase, pargasite, phlogopite and opaque and glassy material.
Other famous mineralogical locality of zeolites (natrolite, analcime, phillipsite, mesolite, thomsonite) together with apophyllite, calcite and chlorite was described by Bouska and Malec (1971) in amygdales of a basanite
intrusion near Soutesky.
Predominance of sulphates (mikasaite, basanite
and anhydrite) over pyrite was identified by X-ray powder diffraction, and pyrite was identified only in samples 2 and 4 (Table 3, Fig.
K-Ar and palaeomagnetic data from Neogene basanites
near Lqdek Zdroj, Sudetes Mts.
and crustal contamination in the Cartagena volcano field (South-East of Spain).
The volcanics are mainly basanites
and tephrites, mildly to strongly alkaline, and akin to the intra-plate volcanic rock series.
K-Ar palaeomagnetic data from Neogene basanites
near Ladek Zdroj, Sudetes Mts., Annales Societatis Geologorum Poloniae, 72, 119-129.
Teschenites and basanites
from Guayacan Formation, are relative high in [P.sub.2][O.sub.5], Ti[O.sub.2], Cr, La and Ni than basanites
and alkaline basalts from La Garita Formation in the paleo-arc, with relative high [Al.sub.2][O.sub.3] and Ba.