RENSSELAERITE
rensselaerite
(noun) a kind of soft talc; sometimes used as wood filler
Source: WordNet® 3.1
Etymology
Noun
rensselaerite (uncountable)
(mineral) A soft, compact variety of talc, being an altered pyroxene, sometimes worked in a lathe into inkstands and other articles, found in New York and Canada.
Source: Wiktionary
Rens"se*laer*ite (rns"se-lr-t), n. (Min.)
Definition: A soft, compact variety of talc,, being an altered pyroxene. It
is often worked in a lathe into inkstands and other articles.
Source: Webster’s Unabridged Dictionary 1913 Edition