Silicic is the group of silicate magmas which will eventually crystallise a relatively small proportion of ferromagnesian silicates, such as amphibole, pyroxene, and biotite.
The term "silicic" refers to a specific type of magma that is rich in silica but contains relatively little iron and magnesium. This magma will eventually crystallize into rocks containing minerals like amphibole, pyroxene, and biotite.