Cummingtonite Chemical: Fe2Mg5Si8O22(OH)2. Clades: Amphibole group; Inosilicates; Silicate minerals; Lapidae. rom Related postsNeurotransmitterMarch 10, 2019Lachnanthes carolinianaMay 15, 2020Calcium carbonicum ostreatumMarch 10, 2019 Previous postRhodoniteNext postActinolite