SILICATES of the amphibole group are known to decompose endothermically, at temperatures above 600° C, to give a pyroxene and other products 1–3. The composition of the pyroxene and other products is ...
Magmas generated in Earth’s mantle evolve through a complex interplay of crystallisation, mixing, assimilation and volatile exsolution as they ascend through the crust. Hydrous phases, and amphibole ...