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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