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Gold Prospecting
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Acid to dissolve quartz ?
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<blockquote data-quote="Phoenix76" data-source="post: 267101" data-attributes="member: 6518"><p>Come in late on this one, but must comment that Diggerdude is spot on with his thermal shock.</p><p></p><p>True story - On an old mine field here in Qld, one miner had a shaft that went down 40ft. He was getting 2oz/ton. His method was exactly as DD said. He would burn his quartz, make it brittle, them crush by hand. Just imagine if he had today's knowledge. Maybe 3-4oz/ton? Knowing where he was working and the conditions and the rather primitive methods used, who knows what he would have got.</p><p></p><p>But back to Headsup - mate, I would categorically say - STAY AWAY FROM HF. It is bloody dangerous and that is an understatement. I've studied in chemistry and use some nasty stuff recovering gold from electronics. I will not let anyone near me when I am processing. </p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/6518/1470727854_refining_011.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Those brown fumes you see coming in this case from Nitric Acid will kill you. Breath in one gutful and say goodbye. So Headsup, stay away from it unless you are qualified to use these acids safely.</p></blockquote><p></p>
[QUOTE="Phoenix76, post: 267101, member: 6518"] Come in late on this one, but must comment that Diggerdude is spot on with his thermal shock. True story - On an old mine field here in Qld, one miner had a shaft that went down 40ft. He was getting 2oz/ton. His method was exactly as DD said. He would burn his quartz, make it brittle, them crush by hand. Just imagine if he had today's knowledge. Maybe 3-4oz/ton? Knowing where he was working and the conditions and the rather primitive methods used, who knows what he would have got. But back to Headsup - mate, I would categorically say - STAY AWAY FROM HF. It is bloody dangerous and that is an understatement. I've studied in chemistry and use some nasty stuff recovering gold from electronics. I will not let anyone near me when I am processing. [img]https://www.prospectingaustralia.com/forum/img/member-images/6518/1470727854_refining_011.jpg[/img] Those brown fumes you see coming in this case from Nitric Acid will kill you. Breath in one gutful and say goodbye. So Headsup, stay away from it unless you are qualified to use these acids safely. [/QUOTE]
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Gold Prospecting
Prospecting Equipment
Acid to dissolve quartz ?
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