Changes

Also called [[matrix]]. Mass of [[rock]] in which larger [[crystal]]s may be set.

'''Groundmass''' (also called [[matrix]]) is a mass of [[rock]] in which larger [[crystal]]s may be set.<ref>Pellant, p. 250</ref>

 

Pellant, p. 250

 

==References==

=Sources=

*Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995)

*Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995)

[[category:geology]]

[[category:geology]]