Beryllium is an element thought to be largely associated with igneous and hydrothermal processes and the world’s major economic Be deposits are largely igneous or hydrothermal. However, metamorphic rocks also play a major role in the Be budget of the Earth’s crust. Beryllium enrichments in pegmatites and hydrothermal deposits are associated with granitic systems that many geoscientists think are derived from melting of metasedimentary rocks, with metapelites being the most fertile for Be (e.g., London and Evensen, this volume). Consequently, metamorphism plays an important role in the cycling beryllium from sediments to granitic systems.

The emphasis of my chapter is...

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