Cu`pel·la'tion (kū`pĕl*lā'shŭn) noun [ See Cupel .] The act or process of refining gold or silver, etc., in a cupel. » The process consist in exposing the cupel containing the metal to be assayed or refined to a ho...
Found op http://www.encyclo.co.uk/webster/C/203
• (n.) The act or process of refining gold or silver, etc., in a cupel.
Found op http://thinkexist.com/dictionary/meaning/cupellation/
separation of gold or silver from impurities by melting the impure metal in a cupel (a flat, porous dish made of a refractory, or ... [3 related articles]
Found op http://www.britannica.com/eb/a-z/c/169
Cupellation is a metallurgical process in which ores or alloyed metals are treated under high temperatures and carefully controlled operations in order to separate noble metals, like gold and silver, from base metals like lead, copper, zinc, arsenic, antimony or bismuth, that might be present in th...
Found op http://en.wikipedia.org/wiki/Cupellation
An assaying or refining process whereby the components of an alloy oxidised at high temperature are separated by absorbtion into the walls of a 'cupel', a shallow porous vessel.
Found op http://freespace.virgin.net/a.data/glossaryframes.htm
Cupellation is an ancient method of extracting silver from its ores by alloying the silver with lead, and then removing the lead from the lead-silver alloy by melting it in a receptacle made from bone-ash and called a cupel. Air is then passed over the surface of the metal, oxidising the lead to lit...
Found op http://www.probertencyclopaedia.com/browse/GC.HTM
Separation of base metals from precious metals by oxidation of the former. The oxides are absorbed by a cupel (a dish of bone ash); the precious metal remains as a bead on the cupel. A technique used in assaying.
Found op http://www.metalbulletin.com/Glossary.html
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