actinolite

noun

  1. A mineral with monoclinic crystals of the chemical formula Ca2(Mg,Fe)5Si8O22(OH)2, belonging to the amphibole group.

Similar Words

act /æk/ actability actable acted /ˈæk.tɪd/ actin acting /ˈæk.tɪŋ/ actinian actinians actinic actinide /ˈæktɪnaɪd/