| http://www.w3.org/ns/prov#value | - Mordants, substances used as chemical intermediaries between vegetable dyes and animal fibers such as silk, wool, alpaca, and cashmere, can include oak galls, acorns, staghorn sumac, rhubarb, oxalis, soy milk, urine, juniper needle ash, alum (aluminum sulfate), and iron (ferrous sulfate, as well as the tannins in coffee, black walnut, and eucalyptus).
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