Jan 21 2004 The amphibole group of minerals is based on the double chain silicate structure as shown here The basic structural unit is Si4O11 6

Amphibole Amphibole any of a group of common rock forming silicate minerals Amphiboles are found principally in metamorphic and igneous rocks

There are 5 major groups of amphiboles leading to 76 chemically defined end member Amphiboles decompose to anhydrous minerals mainly pyroxenes at

Nov 14 2011 Inosilicates Pyroxenes and Amphiboles Inosilicates Single Chain Silicates The single chain silicates have a basic structural unit consisting

Amphibole is an important group of inosilicate minerals forming prism or needlelike crystals composed of double chain SiO 4 tetrahedra linked at the vertices