laumontite Meaning, Definition & Usage

Lau"mont*ite noun
Etymology
From Dr. Laumont, the discoverer.
Definitions
  1. (Min.) A mineral, of a white color and vitreous luster. It is a hydrous silicate of alumina and lime. Exposed to the air, it loses water, becomes opaque, and crumbles. Written also laumonite.

Webster 1913