Emily Dickinson Lexicon

BAIK'AL-ITE, n. [From Baikal, a lake in Northern Asia.]

A mineral occurring in acicular prisms, sometimes long, and either confusedly grouped or radiating from a center. Its color is greenish, or yellowish white. It is regarded as a variety of tremolite. This name is given also to an olive-green variety of augite and also of epidote. – Cleaveland.