amphibole
any of a group of double chain inosilicates (mineralogy)
magnesium-iron-manganese amphibole subgroup
w(OH, F, Cl)-dominant amphibole group
hornblende
any mineral of a certain amphibole rootname subgroup
calcium amphibole subgroup
w(OH, F, Cl)-dominant amphibole group
sodium amphibole subgroup
w(OH, F, Cl)-dominant amphibole group