scorification

[ skawr-uh-fi-key-shuh n, skohr- ]

/ ˌskɔr ə fɪˈkeɪ ʃən, ˌskoʊr- /

an assaying process whereby gold or silver is separated from ore by fusion with lead.

Origin of scorification

First recorded in 1745–55; scori(a) + -fication

If these larger cupels are not at hand the larger buttons will have to be reduced in size by a scorification before cupelling.

A Textbook of Assaying: For the Use of Those Connected with Mines. |Cornelius Beringer and John Jacob Beringer
The first is conducted in one of two ways, known respectively as the crucible method and the scorification method.

Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 |Various
The concentration of the button of lead may be effected either by scorification or by fusion in a crucible.

A Textbook of Assaying: For the Use of Those Connected with Mines. |Cornelius Beringer and John Jacob Beringer
It hath also the property of rendering them volatile, and greatly facilitates their scorification.

Elements of the Theory and Practice of Chymistry, 5th ed. |Pierre Joseph Macquer

Various assays are described and directions given for crucible, scorification, and cupellation tests.

De Re Metallica |Georgius Agricola