rensselaerite

Century Dictionary and Cyclopedia

1. n. A variety of massive talc or steatite. It has a fine compact texture, and is worked in the lathe into inkstands and other articles.

Wiktionary

1. n. mineralogy A soft, compact variety of talc, being an altered pyroxene, sometimes worked in a lathe into inkstands and other articles.

GNU Webster's 1913

1. n. (Min.) A soft, compact variety of talc,, being an altered pyroxene. It is often worked in a lathe into inkstands and other articles.

WordNet 3.0

1. n. a kind of soft talc; sometimes used as wood filler