cupellation definition

  • noun:
    • A refining procedure for nonoxidizing metals, such as for instance gold and silver, which a metallic mixture is oxidized at high temperatures and base metals tend to be separated by absorption into the walls of a cupel.
    • The assaying of platinum in a cupel.
    • The work or means of refining gold or silver, etc., in a cupel.
    • Separation of silver and gold from lead by treatment in a cupeling-furnace or perhaps in a cupel.
    • A refining process for nonoxidizing metals, such silver and gold, by which a metallic combination is oxidized at high conditions and base metals tend to be separated by consumption to the walls of a cupel.
    • The assaying of precious metal in a cupel.
    • The work or procedure of refining silver or gold, etc., in a cupel.
    • Separation of gold-and-silver from lead by therapy in a cupeling-furnace or perhaps in a cupel.

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