Mountain leather

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(Min.) a variety of asbestus, resembling leather in its texture.

See also: Mountain

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Leonard Himes of Minerals America was selling them and told me that the only association was some fibrous material looking like the mountain leather that demantoid from Italy is usually found in.