Cupels Gold

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Frequently Asked Questions...

What is the Assay Process in Determining a Worthy Gold Site?

Suppose you believe you have discovered gold in a river or possibly underground. Well, how does one get this confirmed or denied?


Best Answer...

Answer:

The classic gold assay in ore is the cupel,

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cupel gold 18,30 hits

If it is gold in a water environment and it is honest (re Bre-X), it should have a much lowered silver content from corrosion.

Quick checks are density, streak plate, resistance to concentrated nitric acid; melt (1064 C) not burn in a torch flame on charcoal. Dissolve in aqua regia and precipitate the Purple of Cassius on tin hydroxide sol.


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Cupels Gold

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