Difference between revisions of "Gold powder"
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== Description == | == Description == | ||
| − | A powder prepared from finely ground [http://cameo.mfa.org/materials/fullrecord.asp?name=gold gold]. Gold is difficult to grind because of its ductility. This made powdered gold more expensive than [http://cameo.mfa.org/materials/fullrecord.asp?name=gold | + | A powder prepared from finely ground [http://cameo.mfa.org/materials/fullrecord.asp?name=gold gold]. Gold is difficult to grind because of its ductility. This made powdered gold more expensive than [http://cameo.mfa.org/materials/fullrecord.asp?name=gold%20leaf gold leaf]. In medieval times, one preparation method mixed gold with [http://cameo.mfa.org/materials/fullrecord.asp?name=honey honey] then ground it in a glass mortar. Another method amalgamated the gold with [http://cameo.mfa.org/materials/fullrecord.asp?name=mercury mercury] prior to grinding followed by heating to drive off the mercury. Currently, gold powder is prepared by electrolytic methods. In the Middle Ages, the most common use for gold powder was as an [http://cameo.mfa.org/materials/fullrecord.asp?name=ink ink] and [http://cameo.mfa.org/materials/fullrecord.asp?name=paint paint] on illuminated manuscripts. It is now primarily used as a colorant in gold paint for the decoration of [http://cameo.mfa.org/materials/fullrecord.asp?name=ceramic ceramics] (see [http://cameo.mfa.org/materials/fullrecord.asp?name=Liquid%20Bright%20Gold Liquid Bright Gold]). |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | poudre d'or (Fr.); polvo de oro (Esp.); goudpoeder (Ned.); | + | poudre d'or (Fr.); polvo de oro (Esp.); goudpoeder (Ned.); pó de ouro (Port.) |
== Authority == | == Authority == | ||
| − | * | + | * Ralph Mayer, ''A Dictionary of Art Terms and Techniques'', Harper and Row Publishers, New York, 1969 (also 1945 printing) |
| − | * | + | * Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982 |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 06:38, 24 July 2013
Description
A powder prepared from finely ground gold. Gold is difficult to grind because of its ductility. This made powdered gold more expensive than gold leaf. In medieval times, one preparation method mixed gold with honey then ground it in a glass mortar. Another method amalgamated the gold with mercury prior to grinding followed by heating to drive off the mercury. Currently, gold powder is prepared by electrolytic methods. In the Middle Ages, the most common use for gold powder was as an ink and paint on illuminated manuscripts. It is now primarily used as a colorant in gold paint for the decoration of ceramics (see Liquid Bright Gold).
Synonyms and Related Terms
poudre d'or (Fr.); polvo de oro (Esp.); goudpoeder (Ned.); pó de ouro (Port.)
Authority
- Ralph Mayer, A Dictionary of Art Terms and Techniques, Harper and Row Publishers, New York, 1969 (also 1945 printing)
- Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982