16462
Accession Number
15018
Title Of Article Chaper
Examination of two gold objects of aboriginal manufacture
Title Of Journal Book
Ohio J. Sci
Volume
54
Pages
149-150
Literature Type
Serial
Literature Level
Analytic
Abstract
One of these objects, apparently a breast ornament, came from the Ivory Coast, West Africa, and was probably made sometime in the last century. Its weight was found to be 83.49 grams, and it had evidently been cast by the <i>cire <i>perdue method. Though the surface of the object has the color of gold of high fineness, a specific gravity measurement and microchemical tests indicated that the object as a whole is only about 400 fine. In all probability it had been colored by a <i>mise en couleur process. The other object, a plain hemispherical bowl of unknown date, came from Colombia, South America, and was said to have been formed by hammering out a single large nugget. It has a dull brassy appearance and weighs 227.8 grams. A specific gravity measurement and microchemical tests indicated a fineness of about 770. This agrees with re ported assays of native gold from Colombia. Both the appearance of the bowl and its fineness are consistent with the report that it was produced by hammering out a nugget of native gold. -- AATA
pub_id
16462