A '''metasomatic''' process is one that changes the composition of a [[rock]] or [[mineral]] by the addition or replacement of [[chemical]]s.<ref>Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York, 1995, p. 251.</ref> | A '''metasomatic''' process is one that changes the composition of a [[rock]] or [[mineral]] by the addition or replacement of [[chemical]]s.<ref>Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York, 1995, p. 251.</ref> |