Emily Dickinson Lexicon

SCAP'O-LITE, n. [Gr. σκαπος, a rod, and λιθος, a stone.]

A mineral which occurs massive, or more commonly in four or eight sided prisms, terminated by four sided pyramids. It takes its name from its long crystals, often marked with deep longitudinal channels, and collected in groups or masses of parallel, diverging or intermingled prisms. It is the radiated, foliated and compact scapolite of Jameson, and the paranthine and Wernerite of Haüy and Brongniart. – Cleaveland.