amphiboles

/AE1 M F AH0 B OW0 L Z/
noun
  1. 1

    Any of a large group of structurally similar hydrated double silicate minerals, containing various combinations of sodium, calcium, magnesium, iron, and aluminium/aluminum

Source: https://en.wiktionary.org/wiki/amphibole, https://en.wiktionary.org/wiki/amphiboles