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Author Topic: can you tell me how to check my black sand Gold findings without using mercury?  (Read 9991 times)

Offline Karen W.

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I have not panned for years but decided to pan some of the jarred black sand from The mine m grandmother shared with her family... I have 1 jar very black sand with flakes and w jar that has been panned down another stp and I have taken like a tablespoon and washed it down futher and am pretty much down to the Gold dustand flakes...

Can you recommend a way to double check my work and verifi my remaining flakes and dust as the real thing and not something else?

I know mercury is not a good idea... so what is the 2nd test?


 

Offline Bored chemist

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Nitic acid will dissolve most metals and pyrites but not gold.
OK, it's not nice stuff to play with, but it's less environmentally unfriendly than mercury.
 

Offline RD

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"not nice" is something of an understatement ...

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Warning! Important! Nitric acid should be handled with great care.
 It is highly corrosive and can burn the skin severely. It is particularly dangerous to the eyes.
http://www.artisans-lane.com/Etching/Part3.htm

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Nitric acid is a powerful oxidizing agent, and the reactions of nitric acid with compounds such as cyanides, carbides, and metallic powders can be explosive.
http://en.wikipedia.org/wiki/Nitric_acid
« Last Edit: 18/01/2009 15:29:30 by RD »
 

Offline Karen W.

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Being careful of course...where would one get the nitric acid... and how then would I test it..my gold flakes that is?
« Last Edit: 18/01/2009 22:54:08 by Karen W. »
 

Offline Bass

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If the black sand is mostly magnetite (which is likely), wrap a magnet in cellophane and use it to pick up the black sand, which should leave the gold behind (use cellophane to make it easier to keep the magnet clean).
 

Offline Karen W.

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Thanks bass that sounds safer to use.. thanks...I'll
let you know how it goes!
 

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