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Gold Prospecting
Metal Detecting for Gold
Gold Nugget and Specimen Cleaning Advice
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<blockquote data-quote="DrDuck" data-source="post: 335817" data-attributes="member: 158"><p>For ironstone and iron staining Oxalic Acid (used in deck cleaners) is safe and effective, if a little slow.</p><p></p><p>The only option for quartz is hydrofluric acid, which is hard to get, very dangerous. Alibright contains it in a relatively weak concentration (just less than 10g per litre), but it still needs to be treated with care.</p><p></p><p>if you search the forum you will find a number of threads on this topic, from people who know more about it than me in practice!</p></blockquote><p></p>
[QUOTE="DrDuck, post: 335817, member: 158"] For ironstone and iron staining Oxalic Acid (used in deck cleaners) is safe and effective, if a little slow. The only option for quartz is hydrofluric acid, which is hard to get, very dangerous. Alibright contains it in a relatively weak concentration (just less than 10g per litre), but it still needs to be treated with care. if you search the forum you will find a number of threads on this topic, from people who know more about it than me in practice! [/QUOTE]
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Gold Prospecting
Metal Detecting for Gold
Gold Nugget and Specimen Cleaning Advice
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