Amphiboles: Crystal Chemistry, Occurrence, And ... Apr 2026

This is where they truly shine. Amphiboles are the star of the Amphibolite facies , a stage of medium-to-high grade metamorphism. They form when basaltic rocks are subjected to intense heat and pressure in the presence of water.

Amphiboles are a bridge between the simple world of single-chain silicates and the complex, layered world of micas. They tell us stories of wet magmas, colliding continents, and the chemical evolution of our planet. AI responses may include mistakes. Learn more Amphiboles: Crystal Chemistry, Occurrence, and ...

Because the structure has several different sites (labeled A, B, and C), it can accommodate a huge variety of ions. From common elements like Magnesium and Iron to more exotic ones like Sodium and Lithium, the amphibole structure acts as a chemical "garbage can," soaking up whatever is available in the magma or fluid. This is where they truly shine