At subduction zones, crustal material enters the mantle. Some of this material, however, is
returned to the overriding plate through volcanic and plutonic activity. Magmas erupted …

Carbonatites and alkaline-silicate rocks are the most important sources of rare earth
elements (REE) and niobium (Nb), both of which are metals imperative to technological …

Metamorphism of Alpine Peridotite and Serpentinite ADS Classic is now deprecated. It will be
completely retired in October 2019. This page will automatically redirect to the new ADS …

The lapidary term" jade" refers to two very tough, virtually monomineralic rocks used for
ornamental carvings or gems. Both have metasomatic origins that are intimately connected …

Intended as a reference for the academically-oriented geologist as well as the practising
economic geologist, this book is concerned with the study of skarn deposits having …

The heating and burial of rock masses during mountain building drives chemical reactions
that liberate volatile fluid species (Figure 1). These volatiles, including H2O, CO₂, and CH4 …

Thermodynamic reaction path models were applied to provide insights into the formation of
rodingites at mafic/ultramafic boundaries. The models were set up to investigate the shifts in …

Metamorphic reaction bands consist of mineral assemblage layers, that separate
incompatible mineral assemblages, and grow by reaction at their contacts and by …

Accurate values of diffusion coefficients for aqueous species are a requisite for predicting
mass transfer in many geochemical processes. Tracer diffusion coefficients can be …

Geochemical alteration of metacarbonate layers due to fluid infiltration during greenschist
and amphibolite facies metamorphism was investigated based on 149 whole-rock analyses …