any of a group of double chain inosilicates (mineralogy)

Amphibole is a group of inosilicate minerals. They form prism or needlelike crystals.[1]

Amphibole (Tremolite)

They are double chain SiO
tetrahedra, linked at the vertices. Usually they contain ions of iron and/or magnesium in their structures. Amphiboles can be green, black, colorless, white, yellow, blue, or brown.[2]

References change

  1. "Amphibole". Dictionary of Geology. Retrieved 2013-01-21.
  2. Mindat, Amphibole Supergroup