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Webster 1913 Edition

(r?ns′se-l?r-?t)

Noun.

(Min.)

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

rensselaerite ‎(uncountable)

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