Origin of amphibole
Examples from the Web for amphibole
Both are common alteration products of magnesian silicate minerals such as olivine, pyroxene, and amphibole.The Economic Aspect of Geology|C. K. Leith
Pargasite, pr′ga-sīt, n. a dark-green crystallised variety of amphibole or hornblende.
The fibrous variety of serpentine is the principal source of asbestos, an amphibole asbestos being less common.Geology|William J. Miller