A '''massive''' [[Mineral Aggregates|mineral aggregate]] consists of interlocking [[mineral]] grains, lacking apparent structure. [[Limonite]] is an example of a mineral exhibiting a massive form. Chesterman, p. 41
=Sources=
*Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987)