Even if base metal predominates, when the extractable pure silver itself reaches a full silver nisab, the zakat obligation on that silver is not simply erased.
If the pure silver is below nisab, the other metal does not automatically complete the silver nisab. Trade intention and value-based rules may then become relevant.
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Zakat on Silver: Nisab, Incremental Dues and Alloyed Dirhams
Even if base metal predominates, when the extractable pure silver itself reaches a full silver nisab, the zakat obligation on that silver is not simply erased.
If the pure silver is below nisab, the other metal does not automatically complete the silver nisab. Trade intention and value-based rules may then become relevant.