Calcareous incrustations, including fragments of madrepores, and of shells, cemented by splintery carbonate of lime.
"Narrative of a Survey of the Intertropical and Western Coasts of Australia] [Volume 2 of 2]" by Phillip Parker King
It's just the same principle as those lime springs that incrust things with lime.
"Old Gorgon Graham" by George Horace Lorimer
They seem to be incrusted in a shell that we are unable to pierce.
"Evolution Of The Japanese, Social And Psychic" by Sidney L. Gulick
In incrusted steam boilers, at a temperature ranging from 212 deg.
"Scientific American Supplement, No. 484, April 11, 1885" by Various
Visiters are in the habit of leaving various articles, which, by the ensuing season, thus become incrusted.
"The Mirror of Literature, Amusement, and Instruction, No. 333" by Various
They were deeply incrusted with rust.
"Darkwater" by W. E. B. Du Bois
Two half-naked children incrusted with dirt were playing on the floor.
"The Woman Who Toils" by Mrs. John Van Vorst and Marie Van Vorst
Then perhaps he allows to himself that he really does care a little, and he loses some of his incrustation of vanity.
"Doctor Claudius, A True Story" by F. Marion Crawford
Tongue black and incrusted.
"North American Medical and Surgical Journal, Vol. 2, No. 3, July, 1826" by Various
He felt that a moral leprosy incrusted him, which repelled the good, and kept aloof the prudent.
"Harper's New Monthly Magazine, Volume 1, No. 3, August, 1850." by Various