Emily Dickinson Lexicon

VA'RI-O-LITE, n. [L. varius and Gr. λιθος, stone.]

In mineralogy, a kind of porphyritic rock, in which the imbedded substances are imperfectly crystalized, or are rounded, giving the stone a spotted appearance. – Cyc. Variolites are fragments of primitive glandular rocks. – Dict. Nat. Hist.