'''Acicular''' is a needlelike type of [[Mineral Habit|mineral habit]]. [[Natrolite]] is an example of a [[mineral]] exhibiting an acicular habit. Chesterman, p. 38
=Sources=
*Chesterman, Charles W. ''The Audubon Society Field Guide to North American Rocks and Minerals'', Alfred A. Knopf: New York (1987)