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Gold Prospecting
Alluvial Gold Prospecting
sodium metaborate instead of borax
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<blockquote data-quote="jon_m" data-source="post: 521366" data-attributes="member: 2232"><p>Have some lab grade sodium metaborate from years ago. Wondering how it'd be instead of borax for a flux when doing my first gold melt down. </p><p></p><p>Read much from our forum and seems borax mixed with a lesser portion of sodium carbonate makes a good flux.</p><p></p><p>Just bought a mapp gas set from Aldi ($40 !) Yet to buy a crucible & tongs. Not a huge amount to melt down. Thinking of just a few grams per button to start with.</p><p></p><p>Sodium metaborate comes up as NaBO2 whereas borax (sodium tetraborate) is Na2B4O7. So If I have it right borax has more atoms of boron which is (is not?) the main ingredient in the flux.</p><p></p><p>Will it work? Or is it a 'maybe' and a risk. Don't want to start of on the wrong foot?</p></blockquote><p></p>
[QUOTE="jon_m, post: 521366, member: 2232"] Have some lab grade sodium metaborate from years ago. Wondering how it'd be instead of borax for a flux when doing my first gold melt down. Read much from our forum and seems borax mixed with a lesser portion of sodium carbonate makes a good flux. Just bought a mapp gas set from Aldi ($40 !) Yet to buy a crucible & tongs. Not a huge amount to melt down. Thinking of just a few grams per button to start with. Sodium metaborate comes up as NaBO2 whereas borax (sodium tetraborate) is Na2B4O7. So If I have it right borax has more atoms of boron which is (is not?) the main ingredient in the flux. Will it work? Or is it a 'maybe' and a risk. Don't want to start of on the wrong foot? [/QUOTE]
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Gold Prospecting
Alluvial Gold Prospecting
sodium metaborate instead of borax
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