Bible Encyclopedias
CHALK.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

The Hebrews גּיר, gir, thus rendered in Isaiah 27:9, properly denotes lime. To make the stones of the Hebrew altars like lime-stones is to crumble and destroy them. (See LIME).

Bibliography Information
McClintock, John. Strong, James. Entry for 'CHALK.'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/​encyclopedias/​eng/​tce/​c/chalk.html. Harper & Brothers. New York. 1870.