Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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mineral tanning

A method of converting hides and skins into leather by the use of metals, e.g., chromium, aluminum and potassium (alum), iron, and zirconium. The first mineral tannage, called "tawing," involved the use of alum and salt. See: TAWING . See also: CHROME TANNING ;ZIRCONIUM TANNING .

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