Investigations of mineral textures and zoning as evidence for open system processes during
magmatic evolution have always been a centerpiece of petrological studies and have …

The advent of polarized light microscopy in the middle of the 19th century allowed
mineralogists and petrologists interested in igneous rocks to recognize the widespread …

We present here a study of plagioclase/melt partitioning of trace elements at their natural
concentration levels, using sample charges from the widely cited plagioclase/melt …

We review our understanding of the exsolved volatile phase co-existing with magmas during
pre-eruptive storage at the pressures and temperatures corresponding to crustal magma …

Phenocryst zoning patterns are used to identify open-system magmatic processes in the
products of the 2001 eruption of Shiveluch Volcano, Kamchatka. The lavas and pumices …

Textural and compositional zoning in plagioclase phenocrysts in a sample from Parinacota
volcano (Chile) was investigated using backscattered electron images and electron …

Consistent core-to-rim decreases of 87 Sr/86 Sr ratios and coincident increases in Sr
concentrations in plagioclase phenocrysts of varying size (∼ 1 cm to 2 mm) are reported …

Residence times of plagioclase crystals in magma reservoirs can be determined by
modeling the compositional zoning of trace elements in these crystals. We present a …

Strontium isotope ratios measured from core to rim across plagioclase feldspar crystals can
be used to monitor changes in the isotope composition of the magma from which they grew …

Spatial compositional variations in magmatic minerals record chemical and physical
changes in the magma from which they grew. Electron-beam techniques allow high …