Noah Webster
Barolite
BAR'OLITE, noun [Gr.weight, and a stone.] Carbonate of baryte. Its color is usually a light yellowish gray; sometimes whitish, or with a tinge of green. It is strongly translucent. It usually occurs in small masses, which have a fibrous structure; sometimes in distinct crystals.
This mineral is called also Witherite, from Dr. Withering, the discoverer.